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On this page, installers and technicians refers to solar thermal installation and technical work: installing and repairing systems that collect, store and circulate solar-heated water, handling collectors, piping, storage tanks, pumps and controllers, checking function and handing over operation and maintenance records. The object is a hot water system; equipment models, construction requirements, professional testing and work authority are checked separately per project documents and location.
First use the fictional T1–T4 materials to experience counting, record verification and handover: whether collectors, tanks, pumps and sensors can be told apart, and models, quantities and versions checked. All paper-based, without climbing on roofs, connecting pipes or wiring, or starting, stopping or testing real equipment.
This occupation centres on installing and servicing solar water heating systems; photovoltaic installation handles generating components, plumbers cover a broader range of piping, engineers analyze and design, and managers coordinate crews. Choose the preparation direction by the main object and deliverable.
On this page, installers and technicians refers to solar thermal installation and technical work: installing and repairing systems that collect, store and circulate solar-heated water, handling collectors, piping, storage tanks, pumps and controllers, checking function and handing over operation and maintenance records. The object is a hot water system; equipment models, construction requirements, professional testing and work authority are checked separately per project documents and location.
Precise 47-2152.04 Updated2025: installing and repairing solar water heating systems, not purchasing management.
129441 yuan/year
2025 national urban non-private unit employed persons annual average; a broad population, not a thermal wage.
BLS plumbers parent group wages｜https://www.bls.gov/ooh/construction-and-extraction/plumbers-pipefitters-and-steamfitters.htm; BLS2025–2035 parent group projections｜https://www.bls.gov/emp/tables/occupational-projections-and-characteristics.htm; BLS OEWS definitions｜https://www.bls.gov/oes/oes_ques.htm
44150 dollars/year (47-2152 parent group).
| Entry positions | What is mainly done at the start | What employers usually look at | How to demonstrate without experience | Difference from other directions |
|---|---|---|---|---|
| Material and document preparation | Count collector, tank, pump and sensor models and quantities | Check the real job's drawing and tool requirements | Hand over the T1/T2 difference table | An editorial task direction, not a fixed job level |
| Installation assistance | Under supervision, assists with clearly defined installation tasks | Check on-site training, work and supervision conditions | Hand over material status and missing documents | Paper counting does not prove installation skills |
| Inspection records | Organize specified inspection results and the basis |
On this page, installers and technicians refers to solar thermal installation and technical work: installing and repairing systems that collect, store and circulate solar-heated water, handling collectors, piping, storage tanks, pumps and controllers, checking function and handing over operation and maintenance records. The object is a hot water system; equipment models, construction requirements, professional testing and work authority are checked separately per project documents and location.
Thermal collects, stores and circulates solar-heated water; photovoltaic installation handles generating component systems. Piping, pumps, tanks and controls differ from photovoltaic objects, and collaboration does not mean training or authority are mutually recognized.
Insufficient evidence: no actual adoption or replacement causality was obtained, so no disappearance year can be given. Document drafts may assist, while real on-site installation, inspection and responsibility still require the corresponding personnel.
Observe whether there is willingness to check materials repeatedly, read drawings and records, acknowledge gaps and hand over anomalies; interest cannot prove tool operation or on-site ability. Practical training, supervision, local qualifications and safety requirements follow the real position.
The suggestions are summarized from precise thermal system tasks and the editorial paper experience, not a personal assessment or hiring prediction. Equipment function checks require the corresponding professional training, and paper records do not grant authority for height work, electrical work, pressure systems or design signing.
Insufficient evidence: the US median of 63800 dollars and growth of 6.8% belong to the 47-2152 plumbers parent group, not an independent wage and employment figure for the thermal sub-occupation. A precise Chinese wage and complete employer offer were not obtained; check pay by location, responsibilities and contract.
On-site objects｜Collectors, storage tanks, circulation piping and control equipment run through installation and maintenance. Outdoors and rooftops｜Tasks include rooftop collection equipment and penetration protection, requiring the corresponding training and supervision. Materials and tools｜Models, quantities, drawings and manufacturer requirements must be consistent. Physical work｜Installation and repair involve carrying equipment, tools and different working positions, with actual conditions checked per position. Accurate records｜Function, leak and temperature, pressure and flow results have a source, and false data is not added. Time milestones｜Work sequences and maintenance anomalies may create milestone pressure, and checks are not omitted. Professional collaboration｜Design, electrical, piping, owner and acceptance personnel each have responsibilities. Owner communication｜Explain operation, maintenance and pending status, and do not describe unknowns as normal. Safety judgment｜Hot water, height, mechanical, electrical and pressure risks are handled per real rules, without working from a paper exercise.
Confirm the system type, approved drawing version, equipment list and manufacturer requirements; collectors, tanks, circulation pumps, heat exchange and controls must not be interchanged merely on the name solar.
O*NET clearly assigns wages and employment to the 47-2152 plumbers parent group; the 2025 median of 63800 and 10 / 90 percentiles of 44150 / 108420 are not independent thermal wages.
Confirm documents and work scope → count models, quantities and locations → install per approved requirements → record function check results → hand over anomalies and pending items → hand over operation and maintenance documents
National Bureau of Statistics 2025 broad unit, industry and position wages are not an independent wage for this occupation, and individual installer pay is not inferred from them.
New installation focuses on materials, layout and delivery; maintenance focuses on the existing system status, history and anomalies. Both require project requirements and authorization, and equipment is not started or stopped on the basis of a generic process.
The current BLS parent group for 2025–2035 is 510600→545200 people, 6.8%, with 42000 annual average openings; the O*NET current employment column already uses 2025–2035, historical projections are not mixed in, and the parent group is not an independent thermal series.
Confirm maintenance records and authority → check the system and document versions → record the current status → compare against the specified inspection requirements → hand over anomalies and missing evidence → keep maintenance and successor records
JobZone3 and respondent education are the precise US occupational preparation description; the parent group apprenticeship and local plumbing licensing rules are not a unified Chinese requirement.
Hand over the material model and quantity records, installation and maintenance status, function checks and anomaly sheets, and the owner's operation and maintenance instructions. Writing that something was checked cannot replace specific results or acceptance by authorized personnel.
Compared with photovoltaic installers: this occupation's collectors, storage and circulation objects produce hot water, while photovoltaic module systems generate electricity. Both require on-site training, and photovoltaic knowledge does not automatically become hot water piping, pump or control ability.
Photovoltaic installers assemble, install and maintain solar power systems.
Thermal installation technicians install and repair systems that collect, store and circulate solar-heated water.
Photovoltaic inputs include components and supports, electrical connections and confirmed installation requirements.
Thermal system inputs include collector, storage tank, pump, piping and controller documents and project requirements.
On this page, installers and technicians refers to solar thermal installation and technical work: installing and repairing systems that collect, store and circulate solar-heated water, handling collectors, piping, storage tanks, pumps and controllers, checking function and handing over operation and maintenance records. The object is a hot water system; equipment models, construction requirements, professional testing and work authority are checked separately per project documents and location.
Photovoltaic hands over component and support installation and maintenance records, not hot water system performance records.
Thermal hands over piping and equipment status, function and leak inspection records and operation and maintenance instructions.
Photovoltaic checks assembly and the related professional inspection per confirmed requirements, and is not proven by thermal system records.
Thermal inspection objects, record times, basis and anomalies are traceable, and results cannot be invented.
Photovoltaic workers are responsible for the work and records they take on, and the electrical and height scope follows training and authorization.
Thermal system workers are responsible for the installation and maintenance records they take on, with design, professional testing and acceptance responsibilities checked separately.
A photovoltaic title does not automatically grant hot water piping or pressure system operating qualifications.
A thermal title does not automatically grant all electrical, structural, pressure system or design signing authority.
Photovoltaic hands-on work requires real training; a paper hot water exercise cannot prove the ability to wire, climb or test.
O*NET thermal system tasks include testing, collector installation, pumps and sensors, pipe insulation and owner explanations; a task list is not an individual on-site permit.
Insufficient evidence: no independent wage and employment for the US solar thermal sub-occupation was obtained. Public values map to the 47-2152 parent group and cannot be substituted for independent thermal indicators; Chinese wages are checked separately.
Check whether it is residential, commercial or industrial hot water, the system type, and whether installation or maintenance is undertaken, and do not guess responsibilities from a generic installer title.
Hot water objects and task scope
Check who confirms the approved drawings, manufacturer documents, material versions and design changes.
Drawings and equipment documents
Check who performs and explains the specific function checks, and who receives anomalies and final acceptance.
Inspection and acceptance interfaces
Check location, shifts, travel, overtime and on-call conditions; contractual pay cannot be inferred from parent group wages.
On-site arrangements and pay
Check practical training and supervision, hot water, height and electrical risks and the local work requirements.
Training and work preparation
Check the owner instructions, operation and maintenance documents, warranty contacts and how anomalies are handed over.
Operation, maintenance and handover
Distinguish by the main object: broad piping, HVAC and refrigeration, photovoltaic power generation, and analysis and design versus solar hot water installation and maintenance each require the corresponding training. Paper counting does not prove hands-on work or professional qualifications.
The first four rows are the official objects of adjacent occupations, and the last two rows are internal editorial task combinations for this occupation, not independent statutory job levels or conversion probabilities.
Compare the object, deliverable, training and responsibility, then choose a thermal system or adjacent preparation direction.
Broader piping for water, steam, air, liquids and gases, not only solar hot water.
Those willing to add different piping and rule training should first check the actual scope.
Piping installation and repair and status records.
HVAC and refrigeration objects and systems differ, and hot water experience is not automatically mutually recognized.
Those willing to add HVAC and refrigeration equipment and training should check the job gap.
Installation and repair of heating, air conditioning and refrigeration.
Heating, air conditioning and refrigeration technicians
Generating component systems differ from collector, storage and circulation hot water.
Those willing to work on power generation systems should check photovoltaic tool and electrical training.
Component and support installation and maintenance records.
Analysis, design and professional calculation, not individual installation and maintenance.
Those willing to go deeper into system models and design should add engineering fundamentals training.
System options, calculations and technical review.
An internal editorial combination, leaning towards materials, models and document versions.
Those willing to count item by item and check gaps should start with T1/T2.
Material differences and the pending list.
Material and version records
An internal editorial combination, leaning towards inspection evidence and owner explanations.
Those willing to distinguish status and evidence should start with T3/T4.
Record gaps, anomalies and recipients.
Inspection records and handover
US public wages and employment use the 47-2152 plumbers parent group context and cannot be used to give independent values for thermal or other adjacent occupations. Compare by work object and real training, and do not choose an occupation by the parent group median.
First add hot water objects, drawing quantities and record methods; tool generation cannot replace practical training and supervision.
Installation and maintenance participants
Use only authorized documents, trace back models, requirements and records item by item, and real testing is done by the corresponding personnel.
Inspection and owner interface personnel
Distinguish recorded, actual results and approval status, and anomaly close-out is not done from drafts.
Clarify document permissions and the professional division of labour, and evaluate tools with real quality feedback, not just generated volume.
Insufficient evidence: no actual AI adoption rate, replacement ratio or wage causality for this occupation was obtained. Documentation tools may assist with lists, but collectors, piping and controls and on-site work and function judgments require real training and responsibility, and no disappearance year can be given.
Supports collector, storage and circulation, inspection and maintenance and owner explanations, and does not prove AI adoption.
BLS47-2152 parent group projections
2025–2035 parent group context, not an independent thermal AI cause.
Cross-occupation potential exposure, not layoffs or adoption in this occupation.
A 2023v5 US task assessment, not a current hot water employer survey.
O*NET respondent education preparation
Precise US occupational context, not AI effects or Chinese entry requirements.
A 2024 cross-industry voluntary framework, not measured project benefits.
O*NET hot water function records
Locates objects for human verification; a duplicate profile adds no research.
The following are editorial assistance scenarios summarized from hot water tasks, not measured automation ratios; material records, inspection basis and owner explanations carry different responsibilities.
Can organize draft material models and versions.
Personnel check models and quantities against the original drawings and lists, with substitution going to professional confirmation.
Can summarize inspection status and to-do drafts.
Actual inspection results, record truthfulness and anomalies are checked by the corresponding person.
Can draft owner documents and handover explanations.
Open status and operation and maintenance conditions must be traced back, and copy does not approve operation.
Precise tasks, parent group employment, cross-occupation potential exposure and generic risk are kept separate, and draft ability does not equal on-site effect.
The task profile does not measure tool adoption or a real system pass rate.
Installing and repairing hot water systems, function maintenance and owner explanations locate checkable objects.
47-2152 contains broad piping and is not independent thermal employment or an AI result.
BLS2025–2035 parent group projections
BLS2025–2035 US 47-2152 plumbers, pipefitters and steamfitters parent group: base 510,600 people in 2025, end 545,200 people in 2035, official net increase 34,500 people, growth 6.8%, and annual average openings of 42,000 including replacements; OOH7% is rounded. The parent group contains multiple piping occupations and does not list thermal installation technicians separately; the overall projection is not an AI adoption or replacement rate or an individual unemployment probability.
Potential task exposure is not the actual replacement rate for thermal system installation.
ILO2025 generative AI task exposure
Cross-occupation potential exposure
Used to distinguish technical possibility from real adoption and job outcomes.
Human and model assumptions do not replace an employer effects survey in this occupation.
US cross-occupation task assessment
Assesses the potential impact on tasks and does not provide current hot water site or wage causality.
A voluntary cross-industry framework is not a mandatory Chinese rule or on-site compliance evidence.
Fictional content, privacy and information integrity risks are used as editorial review control points.
Document task fragments can be used to discuss assistance possibilities and do not report actual adoption, savings or pass rates.
Insufficient evidence: no real AI adoption or hot water project effects for this occupation were obtained. Document permissions, inputs, review and on-site processes determine whether they can be used.
Insufficient evidence: no direct AI causality for employment or wages in this occupation was obtained. The 47-2152 parent group projection and cross-occupation exposure cannot be substituted.
Draft tools do not equal replacing an entire occupation; thermal system on-site work, real inspection and responsibility still require people, and the actual replacement causality was not obtained.
O*NET tasks; ILO potential exposure
First add hot water objects, quantity drawing reading and records; programming requirements are checked against the position's specific tools.
Editorial judgment: list comparison, record classification and handover drafts have room for assistance, and the actual effect is not verified.
BLS2025–2035 US 47-2152 parent group uses 510,600 people as the base, with growth of 6.8%, an official net increase of 34,500 people and annual average openings of 42,000 including replacements. The displayed headcounts are rounded and the net increase may not be rewritten by subtracting the endpoints; it is not an independent thermal series, current hiring, AI causality or an individual unemployment probability.
BLS parent group projections
Tools do not grant height, electrical or pressure work or professional acceptance, nor do they approve substitution or operation.
There is no credible basis for a disappearance year for the thermal occupation, and neither potential exposure nor parent group projections answer it.
Learn the objects, model versions, records and anomalies, and check supervised practical training and real document tool authorization.
Personnel responsibility is retained from the original documents to handover; the following editorial method is not a unified industry technical standard or a measured AI benefit.
Confirm the T1 system and the material V1 and document roles, and use only authorized documents.
Compare against the T2 model quantities, the T3 time status and the T4 version, and do not invent tests that were not provided.
Independently check the 9/8 pieces and the model differences, inspect F/T/P per the T3 rules, and do not change the times automatically.
Material substitution, actual testing and operation are confirmed by personnel with the corresponding training and authority, and documentation tools do not approve.
Hand materials to C, records to A and the open status explanation to B, keeping the original text and the basis for revisions.
Tools may fabricate models, approval documents or normal function.
Trace back to the original equipment documents and real records, keep unprovided items pending, and do not fabricate approvals.
Sending addresses, owner and equipment documents externally exceeds permissions.
Use the minimum authorized documents, and do not upload real project files to unlicensed tools.
The maintained V2 is mistakenly thought to mean that the materials and inspection have been brought up to date.
T4 sorts the file purposes, keeping the material V1 and the T3 gaps, and a version update does not automatically close them out.
The total piece count conceals differences in model, time or status.
List C-A / C-B and S-A separately per T2, and check the times column by column per T3, not just the total.
Document completeness is treated as real system compliance or operating approval.
Real inspection and professional confirmation stay with the corresponding people, and paper completeness does not replace function or permits.
Compare against the T1 material table, and do not fabricate unknown versions.
Editorial assistance: list draft, actual effect not verified
T2 splits by model and quantity; the total is not used to judge substitution.
Editorial assistance: difference draft, does not approve substitution
Check the T3 record status and times column by column, and do not invent test values.
Editorial assistance: document classification, not a substitute for actual testing
T4 separates the maintenance V2 from the material V1.
Editorial assistance: reference draft, does not close out gaps
Unknown function conclusions go to the professional, and compliance is not inferred from text.
Items pending professional verification
Editorial assistance: issue classification, not on-site diagnosis
Explain the open items and contacts to B, without guaranteeing operability.
Editorial assistance: copy first draft, real effect not verified
C, A and B receive materials, records and explanations respectively, keeping the basis.
Editorial assistance: to-do draft, not a substitute for operating approval
First use T1–T4 to practise input trace-back, model and quantity, time status and handover, then check real training, supervision, professional authority and tool and document authorization.
71590 yuan/year
2025 national urban private unit employed persons annual average; different populations, not a same-occupation pay difference.
155491 yuan/year
2025 annual average for the broad professional and technical personnel position, not a wage for this occupation.
94936 yuan/year
2025 annual average for the broad clerical and related personnel position; individual pay is not inferred.
92,036 yuan/year (non-private); 66,275 yuan/year (private)
2025 pre-tax annual average wage for all employed persons in China's urban construction units. This broad industry was chosen for the solar hot water system construction and installation employer direction and contains multiple occupations; equipment manufacturing, energy operation and specialised repair service employers are checked separately. Different unit population averages are not this occupation's wage or an individual range, they include deductions such as personal tax, social insurance and housing fund contributions, and the survey excludes the self-employed and freelancers.
182064 yuan/year
2025 non-private scientific research and technical services industry annual average, not this occupation.
133539 yuan/year
2025 non-private education sector annual average, not a thermal installation quotation.
Insufficient evidence: no national wage for this occupation was obtained.
Broad unit, position and industry averages cannot give an independent solar thermal wage.
Insufficient evidence: no direct evidence was obtained that AI adoption changes Chinese thermal installation wages, and no percentage change is predicted.
Chinese unit, industry and position classifications are broad statistics and cannot establish Chinese qualification mutual recognition from US 47-2152.04.
Quantity and drawing reading fundamentals
Material models and versions
Use T1/T2 to practise models and quantities; education does not replace practical training.
Supervised on-the-job training
Installation and maintenance records
Check the real equipment, tools and supervision scope; a paper exercise does not prove operation.
Document and spreadsheet preparation
Record completeness checking
Use T3 to practise time status, and do not invent real temperature and pressure values.
Adjacent equipment experience
Anomalies and owner handover
Use T4 to practise the basis and recipients; experience does not automatically grant new authority.
Residential hot water systems
Editorial scenario: collector, storage and circulation installation and maintenance, checking project and manufacturer requirements and supervision.
Commercial and industrial hot water
Editorial scenario: system scope, professional interfaces and specific materials are checked against the real position.
Maintenance and owner explanations
Editorial scenario: keep function status and anomalies; delivering documents does not equal operating approval.
BLS plumbers parent group wages (not thermal-specific)｜https://www.bls.gov/ooh/construction-and-extraction/plumbers-pipefitters-and-steamfitters.htm
The installers and technicians on this page specify solar water heating system objects and do not treat photovoltaic or a generic installer title as the same occupation.
Check training and requirements per location and the specific piping, electrical and height tasks, and do not assert a unified degree or that no qualification is needed.
The table below is an editorial preparation direction, not degree or wage stratification, a recruitment original or a unified threshold.
National Bureau of Statistics 2025 urban unit wages｜https://www.stats.gov.cn/sj/zxfb/202605/t20260515_1963707.html
For the construction industry employer direction of hot water system construction and installation, reference may be made to the 2025 pre-tax annual averages of 92,036 for the non-private sector and 66,275 yuan for the private sector; both are averages for all employed persons in the industry, not this occupation's independent wage, an individual range or take-home monthly pay. The original correct broad statistical context is retained; location, hours, on-call costs and the complete employer pay package must still be checked separately, and no monthly job salary is invented.
Insufficient evidence: no residential hot water installation employer offer was obtained.
No complete, checkable posting covering region and date, hot water tasks, training and supervision, wages, hours and travel was obtained.
Insufficient evidence: no commercial hot water maintenance employer offer was obtained.
No original text covering region and system, maintenance authority, on-call experience and pay was obtained, and parent group dollar figures are not converted as a substitute.
Insufficient evidence: no hot water system inspection record position offer was obtained.
No posting covering the specific inspection record tasks, authorization, date and location and pay was obtained, and broad industry averages are not used as a substitute.
US 47-2152.04 is the precise thermal task code; the statistics use the 47-2152 plumbers parent group, which cannot serve as Chinese occupational classification or licensing.
National Bureau of Statistics 2025 urban unit wages｜https://www.stats.gov.cn/sj/zxfb/202605/t20260515_1963707.html
6.8% (2025–2035; 47-2152 parent group)
63800 dollars/year (47-2152 parent group)
Parent group 10th percentile, not a starting salary for this occupation; BLS plumbers parent group wages｜https://www.bls.gov/ooh/construction-and-extraction/plumbers-pipefitters-and-steamfitters.htm
Insufficient evidence: the parent group 25th percentile was not verified on this page.
The 25th percentile was not verified on this page and is not interpolated; BLS plumbers parent group wages｜https://www.bls.gov/ooh/construction-and-extraction/plumbers-pipefitters-and-steamfitters.htm
63800 dollars/year (47-2152 parent group).
Parent group median, not independent for the sub-occupation; BLS plumbers parent group wages｜https://www.bls.gov/ooh/construction-and-extraction/plumbers-pipefitters-and-steamfitters.htm
Insufficient evidence: the parent group 75th percentile was not verified on this page.
The 75th percentile was not verified and is not substituted; BLS plumbers parent group wages｜https://www.bls.gov/ooh/construction-and-extraction/plumbers-pipefitters-and-steamfitters.htm
108420 dollars/year (47-2152 parent group).
Parent group 90th percentile, not an experience level; BLS plumbers parent group wages｜https://www.bls.gov/ooh/construction-and-extraction/plumbers-pipefitters-and-steamfitters.htm
510600 people (2025; parent group)
Parent group 2025 base period, not an independent thermal headcount; BLS parent group employment projections｜https://www.bls.gov/emp/tables/occupational-projections-and-characteristics.htm
6.8% (2025–2035; 47-2152 parent group)
Parent group 510600→545200; 6.8%, with OOH7% rounded; the table's net increase of 34500 involves rounding; BLS parent group employment projections｜https://www.bls.gov/emp/tables/occupational-projections-and-characteristics.htm
42000 per year (parent group)
Parent group annual average openings include growth and replacement, not the net increase or current hiring; BLS parent group employment projections｜https://www.bls.gov/emp/tables/occupational-projections-and-characteristics.htm
All wages are 2025May US 47-2152 plumbers parent group, not independent 47-2152.04 thermal values. Percentiles are not starting pay or seniority, and the projection is not current hiring.
Insufficient evidence: the parent group annual median of 63800 dollars, growth of 6.8% and annual average openings of 42000 are context only; an independent wage and employment series for this occupation was not obtained, and individual pay follows the real job contract.
OEWS wages for wage and salary employees exclude the self-employed, and contractor project payments or business revenue do not equal an individual wage.
Wage and salary employee income and contracting income
Check wages, overtime, on-call travel and costs against the contract; the parent group median is not a substitute for an installation position offer.
Hours and cost conditions
Check the system type, location, maintenance on-call and actual experience and qualifications, and do not look only at national percentiles.
Actual job scope
6.8% (2025–2035; 47-2152 parent group)
Government (excluding state and local education and hospitals)
71660 dollars/year
The 2025May 47-2152 parent group annual median for that industry, not independent thermal industry statistics.
Manufacturing
65770 dollars/year
The 2025May 47-2152 parent group annual median for that industry, not independent thermal industry statistics.
Heavy and civil engineering construction
63270 dollars/year
The 2025May 47-2152 parent group annual median for that industry, not independent thermal industry statistics.
Plumbing and HVAC contractors
63010 dollars/year
The 2025May 47-2152 parent group annual median for that industry, not independent thermal industry statistics.
63800 is the parent group national median, not an independent thermal starting salary or experience pay grade.
2080 is the standard annual hours basis, and actual hours, overtime and costs must be checked against the contract; the 30.67 multiplier does not guarantee individual annual income.
A high parent group percentile is not a given seniority or this occupation's income; the parent group 25 / 75 were not verified on this page and are not interpolated.
Check location, system scope, shifts and on-call, experience and cost conditions per position; parent group percentiles cannot guarantee pay.
63800 dollars/year (47-2152 parent group)
44150 is a parent group 10th percentile distribution position, not a thermal entry wage.
63800 is the parent group median, not a fixed job level for this occupation or an individual's take-home pay.
108420 is the parent group 90th percentile and does not guarantee income for senior thermal positions.
Occupational interests R100/C44/I28/S12/E10/A2, with Realistic prominent and related to hands-on equipment and material objects; these are occupational descriptions, not your scores.
Interests support experiencing objects, counting and records, and cannot prove thermal system operating qualifications.
A high Realistic score does not mean being able to operate tools or take on height, hot water or electrical tasks.
Observe careful material checking, reliable records and accepting correction; no Big Five threshold is set.
Insufficient evidence: no direct evidence was obtained that Big Five scores predict thermal installation technician performance.
A Conscientiousness score cannot replace real training and function checks.
Focus the experience on hot water collector, storage and circulation objects, material models and record handover, and consider interests together with real training feedback.
MBTI can support discussing preferences but cannot judge which types may enter or are barred from thermal positions.
Realistic involves equipment, materials and on-site objects, Conventional involves procedural records, and Investigative suggests problem analysis; occupational descriptions are not skills or permits.
Insufficient evidence: no direct evidence was obtained that MBTI type predicts performance in this occupation.
R100/C44/I28/S12/E10/A2 is the O*NET occupational interest value, not a personal score or hiring threshold.
Four letters cannot grant on-site, diagnostic or professional signing authority.
The Enneagram is for reflection only and cannot prove installation and maintenance or anomaly judgment ability.
Insufficient evidence: no direct evidence was obtained that Enneagram type predicts performance in this occupation.
A motivation label cannot replace tool practical training and supervisory feedback.
Quantity, units and problem identification can be learned, and one IQ score does not equal thermal system hands-on ability.
Insufficient evidence: no direct evidence was obtained that IQ scores serve as hiring or performance thresholds for this occupation.
After miscalculating, first add the method; score labels cannot replace learning.
Explain the open status and recipients based on real behavior, and set no high-EQ threshold.
Insufficient evidence: no direct evidence was obtained that EQ scores predict installation and maintenance performance in this occupation.
Fluent expression does not equal correct records or safety approval obtained by the owner.
Interest, personality and ability tests are kept separate from actual training, record quality and professional authority. A paper portfolio only shows the checking process and does not predict hiring or on-site competence.
First experience thermal system objects, material counting, record verification and anomaly explanations, then check practical training and supervision conditions; type does not determine direction.
Material and version records
Willing to check model quantities and file references repeatedly.
A correct total piece count does not mean the models conform.
Function records and anomalies
Willing to distinguish written status, times and the actual inspection basis.
Complete paper records do not equal functional compliance.
Owner explanations and handover
Willing to explain limits and find the recipient.
Communication does not replace operating approval.
Willing to add broader liquid and gas piping objects and practical training.
Hot water experience does not automatically grant all piping licensing.
Adjacent direction of HVAC and refrigeration
Willing to add heating, air conditioning and refrigeration equipment training.
Adjacent objects do not mean skills and qualifications are mutually recognized.
Adjacent direction of systems engineering
Willing to add analysis and design and professional calculation fundamentals.
Installation records do not replace engineering signing ability.
See whether materials and records can be checked accurately and unknowns acknowledged; introversion and extroversion do not represent ability.
Introverts also need to hand over issues clearly and can practise with a written difference table.
Extroverts also need to check against the original model times, and fluent communication does not offset omissions.
This page does not provide an MBTI type ranking for thermal work; compare tasks and supervisory feedback.
R100/C44 is an occupational description supporting experience of equipment hands-on work and procedural records, not personal scores.
Insufficient evidence: no direct evidence was obtained that personality trait scores predict performance in this occupation, and no suitability probability is generated.
First add thermal system objects, drawing quantities and record methods; the site requires real training.
Whether communication is accurate is judged by status and recipients, not proven by an EQ label.
The Enneagram is for reflection only, and thermal occupations are not screened by motivation.
Use T1/T2 materials, T3 records and T4 handover to compare the effort, then check the actual position.
Likes equipment and material objects and is willing to patiently check models and the basis for records.
Can acknowledge limits and hand over accurately when C-B is unapproved, T is missing or the P time is problematic.
Do the T1–T4 paper first and revised drafts, without operating real equipment or pretending to have site project experience.
O*NET tasks and the six interests are US occupational descriptions, not personal test results.
Drawing quantities, problem identification and communication knowledge are used for learning; no personality threshold is set.
The precise JobZone3 and respondent education are US context, not a unified Chinese degree.
The DOE2024 specific hot water project materials are only references for objects and documents and cannot replace practical training.
The BLS parent group apprenticeship and local plumbing licensing rules cannot be treated as all thermal positions or a Chinese threshold.
O*NET installation and function check tasks do not grant individual authority and require real training.
The DOE specific US project manufacturer specifications and owner document requirements are not extrapolated to unified Chinese standards.
O*NET tasks and the T1–T4 editorial fiction are kept separate, and the profile is not said to prove exercise validity.
Risks are summarized from precise hot water tasks and editorial record scenarios, not incident rates. This text only explains objects, document training and escalation boundaries, and gives no real installation or testing operating values.
Focus on checking height carrying, hot water and pressure, electrical controls, models and materials, inspection versions and owner handover; paper completeness cannot prove system compliance.
O*NET supports the risk objects, BLS is the plumbers parent group environment, and DOE is US-specific project material; T1–T4 are editorial fiction.
Height and equipment handling risk
Check real training, supervision and project requirements; the paper role does not go on the roof
The T1 material table cannot prove that the supports and roofing are compliant.
Workers, inspection personnel, owners
Misjudging hot water piping or pressure status
Pass actual requirements to the corresponding professionals, and do not operate by the exercise's time rules
T3 has no values and cannot determine real safety.
Installers, electrical and control responsible persons
Wiring across authority levels or judging control function
Check the task training and professional division of labour; records do not replace actual testing
Pumps and sensors matching on arrival does not mean they function normally.
Materials, installation and design personnel
Unapproved substitution or missing parts affect requirements
Check model by model and quantity by quantity, and pass differences to the materials and design responsible persons
Under T2, a total of 4 collectors does not mean the requirement for 4 C-A collectors is met.
Recorders, inspectors and acceptance persons
Missing records or the wrong version treated as inspected
Keep status, times and the original text on file, and do not fabricate an inspection that was not obtained
T4 maintenance V2 does not fill the T3 gaps.
Owners, installation and successor teams
Open items called operable or recipients omitted
Clarify the evidence, pending items and recipients, and leave approval to authorized personnel
The T4 operable statement lacks material and record evidence.
O*NET precise hot water rooftop, piping, control inspection and owner explanation tasks do not provide incident rates.
The BLS parent group environment includes carrying, ladders and scalds as background, not independent thermal incidents or a unified Chinese requirement.
The DOE2024 island hot water project materials are US-specific context only and do not grant individual work qualifications.
O*NET function check tasks require real training and applicable requirements; a task list does not grant operating acceptance authority.
O*NET owner operation, maintenance and diagnostic safety explanation tasks do not prove the validity or incidence of the T1–T4 exercise.
| Check inspection authority, method and recipients |
| Hand over the T3 anomaly records |
| Not a substitute for real testing or acceptance |
| Maintenance documents | Compare maintenance history with system versions | Check the system and the maintenance responsibility scope | Hand over the T4 version difference card | Does not diagnose or start and stop equipment on its own |
| Owner handover | Explains known status and open items | Check who approves the operation and maintenance instructions | Hands over accurate pending items and contacts | States that it does not grant an operating permit |
Insufficient evidence: no complete employer posting was obtained
No complete, checkable posting covering region and date, specific hot water system responsibilities, training and authorization and pay was obtained, and no unified degree or wage is invented.
Verification: check item by item against the actual posting and contract.
Official tasks support the objects
O*NET47-2152.04 supports hot water collection, storage and circulation, installation and repair function checks and owner explanations.
Verification: responsibilities and tasks do not equal an employer's hiring conditions.
Editorial counting and record portfolio
T1–T4 are entirely fictional and practise only quantities and models, record times and version comparison.
Verification: the first and revised drafts can point back to the prompt, without pretending to be site experience.
Editorial anomaly handover portfolio
List the pending items, missing documents and recipients, and do not declare the system normal based on a paper report.
Verification: every status has evidence, and documents that were not obtained are not fabricated.
T1–T4｜All are fictional paper records
The role does only document counting and anomaly handover; the models, quantities, times and rules are exercise settings, not technical standards or installation operating instructions.
T1｜Approved material table V1: 4 C-A collectors; 1 TK-A storage tank; 1 P-A pump; 3 S-A sensors. There is no substitution approval document; only marking match or pending per T1 is allowed, and it may not be concluded that construction or operation is possible.
T2｜Delivery record: 3 C-A; 1 C-B; 1 TK-A; 1 P-A; 2 S-A. Rule: mark as matching only when both quantity and model equal T1; different models are listed separately, and the same total is not treated as model conformity.
T3｜The fictional function record table has a flow column F, a temperature column T and a pressure column P, all containing status text only, with no values or real safety thresholds provided. F is recorded, 10:10, recorder A; T is not recorded; P is recorded, 09:40, recorder A. Exercise rule: only when all three columns are recorded and the times fall within 10:00–10:15 may paper records be marked complete, which does not mean functional compliance.
T4｜The maintenance note V2 says the operation and maintenance instructions have been handed over, contact B; the work order still references the material table V1 and says everything has been checked and it can run, but no C-B substitution approval, S-A completion evidence, T column record or new P column record is attached. Exercise rule: the T2/T3 open items must go to materials lead C and inspection record lead A, and the owner explanation recipient is B; the document preparer may not approve operation.
Tasks and delivery
First list the requirement, delivery and gap for each model and the pending items per T1/T2, and calculate the required total pieces and the delivered total pieces; the total is a count only and does not mean substitution is allowed.
Check the status and times column by column per T3, and write the work order issues and the handover card per T4: evidence, gaps, recipients, current pending status. Seal the first draft first, then look at the answer.
Reference answer｜Complete it independently first
T1 requires 4+1+1+3=9 pieces, and T2 delivered 3+1+1+1+2=8 pieces. C-A is short by 1 and 1 C-B collector is unapproved; S-A is short by 1; TK-A and P-A match in quantity and model. A collector total of 4 still cannot be said to mean 4 C-A collectors conform; a total difference of 1 cannot conceal the model problem.
T3: F10:10 is within the time window; T is not recorded; P09:40 is earlier than 10:00. Only F meets the given record rule and the three columns are incomplete; T may not be fabricated, the P time may not be altered, and a real function pass may certainly not be claimed from text records.
The T4 work order statement that everything has been checked and it can run lacks a basis. Hand the C-A / C-B model and S-A quantity pending items to C, hand the missing T record and the P time rule breach to A, and explain to B that there are still open items and that operating approval does not belong to the document role. The maintenance note V2 does not automatically revise the material V1 or supply inspection evidence; the status is pending on paper.
Boundaries and review
No climbing on roofs, no moving or connecting equipment, no welding, no wiring, no filling, starting or stopping, and no measuring real temperature, pressure or flow. Use fictional records only, provide no operating values and do not pretend to have accepted function. Actual model substitution, testing, on-site hazards and operating approval go to personnel with the corresponding training and authority.
Material difference table
T1 requires 9 pieces and T2 delivered 8; column by column C-A is 1 short, C-B 1 unapproved, S-A 1 short, and the tank and pump match.
Review: quantities and models are checked separately, and the total cannot conceal substitution.
Record completeness table
T3 three columns: F10:10 complies, T missing, P09:40 outside the exercise time window.
Review: only the paper rules are judged, and values that were not obtained are not turned into real performance.
Version and statement verification card
List the maintenance note V2, the material V1 and the missing evidence for can run, keeping the original text and the pending items.
Review: a document update does not mean the material or inspection issues are closed.
Anomaly handover card
Material issues go to C, record issues to A and the status explanation to B; keep the basis and the open status.
Review: the document role does not approve operation, and both drafts are marked fictional.
| Stage | Possible assessment | Observed evidence | Usage boundary |
|---|---|---|---|
| Interview: material counting | Distinguish quantities from models | 9 pieces and 8 pieces, C-A 1 short and C-B unapproved | An editorial observation, not a unified exam |
| Interview: record verification | Check status and times column by column | F complies, T missing, P earlier than the window | Does not prove real functional compliance |
| Trial: version verification | Finds a conflict between the statement and the evidence | The maintenance V2 does not fill the material V1 and inspection gaps | Not a substitute for real operating approval |
| Handover: accurate explanation | Gaps correspond to recipients | C materials, A records, B status explanation | A single paper exercise does not predict competence |
Day 1
Read T1–T4 and the pure paper boundaries, and map the relationships between collector, storage, circulation and control objects, without adding engineering design.
Day 2
List the required models and quantities and the approved version per T1, 9 pieces in total.
Day 3
List the 8 delivered pieces and the differences by model per T2, without approving C-B substitution.
Day 4
Check the F, T and P time status per T3, keeping completeness separate from real function.
Day 5
Compare against the T4 V1/V2 and the unsupported statement, and write the C, A and B handover card.
Day 6
After sealing the first draft, recalculate each answer item and write the basis for corrections, without changing the prompt times.
Day 7
Keep the first and revised drafts, record the effort felt, and list the actual training, supervision and qualification items to check, without computing a suitability probability.
| Qualification / identity | Who it mainly suits | Realistic role in job seeking | Whether it is a universal hiring threshold | Application / registration conditions | Investment level | Important limitations |
|---|---|---|---|---|---|---|
| Education and fundamentals | For those intending to learn hot water systems | Drawing reading, quantities, units and mechanical piping fundamentals | The US JobZone3 is not a unified Chinese degree | Check the school curriculum and real postings | Program length and cost depend on the institution | A degree does not grant all work authority |
| Job practical training | For those intending to take on installation and maintenance | Learns tools, materials and defined tasks under supervision | Checked per the position and jurisdiction | Check the training programme supervisor and on-site scope | According to real practical training conditions | A paper exercise cannot replace hands-on work |
| Piping and thermal system qualifications | For those actually taking on the related work | Clarifies the piping system task scope | US parent group and local rules are not a unified Chinese certificate | Check the local competent authority and job requirements | Check experience, exams and costs separately | A certificate does not equal licensing for all systems |
| Electrical and control tasks | For those taking on the related connection and inspection work | Check the professional training and task division | Local rules are checked separately | Check the electrical responsible person and authorization | Per the applicable training and licensing | A thermal title does not automatically grant electrical authority |
| Height work and on-site preparation | For those requiring roof or hazardous tasks | Check the actual risk, training, supervision and protection requirements | Work in each jurisdiction is checked item by item | Check the project safety lead's requirements | According to the real project conditions | Does not go on the roof based on page rules |
| Acceptance and operating responsibility | For those taking on signing and handover | Check who confirms the design, testing and usage status | Keep organizational professional and project approval separate | Check the acceptance recipient and the basis for approval | According to the real process | Complete records do not equal operating compliance or signing authority |
T1–T4 practise only paper models and quantities, times and handover; they do not prove installation, diagnosis, testing or hiring.
No complete employer posting was used; official tasks and hiring conditions are kept separate.
The US parent group apprenticeship and local plumbing licensing are not a unified Chinese threshold for this occupation.
Equipment manufacturers, approved project documents, local codes and individual training authorization are checked separately, and the exercise rules are not applied to operations on one's own.
Insufficient evidence: no employer posting with complete, checkable region and date, hot water system responsibilities, training and authorization and pay for this occupation was obtained, and no starting salary or unified threshold is invented.
T1–T4 materials of 9/8 pieces, the F/T/P status and the V1/V2 work order are all editorial fiction, not recruitment data, technical standards or real project experience.
The four stages are an editorial competence scope, not fixed job levels, years or a promotion guarantee. The three directions of material documents, inspection records and owner handover require real training and supervision and do not automatically expand work authority.
First understand the hot water objects, material models and document versions.
Stage one: object and document fundamentals
Under supervision, takes on clearly defined tasks, keeps records and hands over anomalies promptly.
Stage two: defined tasks and records
Coordinates material checks and the owner interface, keeping the basis and status consistent.
Stage three: interfaces and anomaly handover
Within existing training and authorization, guides record methods without expanding design work or acceptance authority.
Stage four: method coaching and improvement
Learn hot water systems, quantity drawing reading, records and anomaly explanations, then check job practical training and the professional scope; T1–T4 are not a substitute for hands-on courses.
Education, training, licences, job authorization and operating acceptance are checked separately and cannot be substituted by a title or document.
O*NET precise tasks and JobZone are US descriptions; BLS is the plumbers parent group context and does not establish a unified Chinese degree or apprenticeship duration.
The precise profile JobZone3 and respondent education include high school and other backgrounds, and are a US preparation reference rather than a unified entry requirement.
O*NET47-2152.04 task preparation can locate hot water objects and the learning required, and the education distribution is not a threshold for all positions.
The BLS parent group typically goes through apprenticeships, with some starting at vocational schools; most states and some localities require plumber licensing, and the jurisdiction and specific tasks must be checked separately.
The DOE2024 island project auxiliary materials emphasise manufacturer and applicable specifications, installation inspection and owner documents, and are a US-specific project reference.
The DOE materials do not grant Chinese work licences; this text does not reproduce its temperature, pressure or installation values, and real requirements are checked by the project professional.
Add hot water object and drawing fundamentals
Produce the T1 requirement table
Models, units and the 9 pieces are traceable
Does not guess the system from a generic title
Material and document preparation
Check the actual task training under supervision
Produce the T2 difference table
C-A short by 1 and C-B unapproved are listed separately
Does not approve substitution on the basis of the total
Material checking participant
Add material and inspection interface experience
Hand over the pending items to C
Each item has its original text and responsible person
Confirms status without fabricating delivery
Material interface coordination
Check method coaching and authorization
Guides model and version checking
Others can review the first and revised drafts
Coaching does not grant design or work permits
Add time, unit and record fundamentals
F/T/P status and times are complete
Unrecorded items are not fabricated
Check the inspection position's training and authority
Verifies the given record rules
Only F complies with the rules and is verifiable
Paper completeness is not functional compliance
Add inspection and anomaly handover experience
Hand the missing T and the P time issue to A
Does not alter times to fabricate an inspection
Inspection interface coordination
Check the professional scope and coaching ability
Guides record quality methods
The basis and revisions are traceable
Not a substitute for testing and acceptance authority
Add operation and maintenance document fundamentals
V2/V1 references are listed separately
States that documents are not operating approval
Handover document preparation
Check the actual owner communication training
Explains the open status to B
Material and record issues are not omitted
Does not say everything has been checked
Add multi-party issue close-out experience
Coordinates receipt by C, A and B
Each pending item has a recipient and a basis for close-out
Tracks status without substituting a professional conclusion
Handover interface coordination
Check the coaching method and authorization
Improves status explanations and document traceability
The first and revised drafts and the basis are clear
Does not expand operating signing authority
Precise hot water responsibilities, parent group employment and the Chinese independent series are kept separate, and industry heat cannot imply this occupation's headcount or individual hiring. Moving requires adding the target objects and training.
United States
2025–2035
47-2152 parent group 510600→545200, 6.8%, with OOH7% rounded; the table shows a net increase of 34500, and rounded display figures need not be equal when subtracted.
The parent group covers broad piping and is not the independent growth of thermal 47-2152.04 or AI causality.
Plumbers parent group employment projections
47-2152 parent group, not thermal-specific
510600→545200 people; growth 6.8%
United States
2025–2035 annual average
The annual average of 42000 covers parent group growth and replacement openings, not the annual net increase or current hiring.
Insufficient evidence: no independent openings for the thermal sub-occupation were obtained, and the parent group cannot be substituted.
Parent group annual average job openings
47-2152 parent group; not independent for the sub-occupation
42000 per year (parent group context)
Mainland China
2025 broad wage context verified
NBS broad unit, industry and position wages cannot provide an independent employment, recruitment or wage series for the thermal occupation.
Insufficient evidence: no independent Chinese headcount, recruitment scale or wage series for this occupation was obtained.
Independent occupational series gap
Solar thermal installation technicians
Insufficient evidence: no independent occupational national series was obtained.
O*NET precise hot water tasks, parent group 2025 wages and the current 2025–2035 employment column are used separately; precise growth and net change are checked against the BLS detailed table, and historical projection periods are not mixed in.
The current BLS47-2152 parent group 6.8% and annual average of 42000 are not an independent thermal projection.
NBS broad wages do not represent occupational headcount or demand.
The transition distance is an editorial task comparison, not a success rate, and requires the corresponding training and authority.
Add broader liquid and gas piping objects and the related rule training
Shares piping materials, installation and repair and status records
Extending the object requires practical training; not all authority is mutually recognized
Add heating, air conditioning and refrigeration equipment and professional training
Shares equipment installation and repair and control records
The systems differ, and hot water experience does not automatically enable a transfer
Add generating component assembly, electrical and on-site training
Shares solar on-site materials and installation records
Thermal does not equal generating system skills
Add crew, resource and work sequence and supervision coordination
Shares project status, anomalies and handover
Moving from hands-on work to organizing requires separate experience
Add system analysis and design and engineering calculation
Shares solar systems and technical interfaces
Installation records do not replace design qualifications
Add electrical system design and testing and engineering fundamentals
Shares control equipment and professional issue interfaces
Record experience does not grant engineering signing ability
Add scheduling, budget, resource and delivery methods
Shares versions, anomalies and multi-party handover
Coordinating records does not automatically become management ability
Add real thermal system practical training and supervisory feedback
Shares material checking and owner explanations
An internal editorial combination, not a new statutory job level
Insufficient evidence: no independent national wage or complete employer pay was obtained. For the construction industry employer direction of hot water system construction and installation, the NBS2025 urban non-private construction pre-tax annual average is 92,036 yuan and the private sector figure is 66,275 yuan, both covering all employed persons in the industry; these are not thermal installation wages or an individual range. Equipment manufacturing, energy operation and specialised repair service employers need their main industry checked separately; pre-tax annual averages are not take-home monthly pay, and location, hours and on-call costs are checked against the real contract.
63800 is the 2025May US 47-2152 plumbers parent group median, not an independent thermal starting salary. 44150 / 108420 are the parent group 10 / 90 percentiles, not seniority pay grades or individual pay.
BLS2025–2035 US 47-2152 plumbers, pipefitters and steamfitters parent group: base 510,600 people, end 545,200 people, growth 6.8%, official net increase 34,500 people, and annual average openings of 42,000 including replacements; OOH7% is rounded. The endpoint headcounts are rounded, and the official net increase is not rewritten by subtracting them; thermal installation occupations are not listed separately. The overall projection is not current hiring, an AI adoption or replacement rate or an individual unemployment probability, and does not guarantee hiring.
The occupational R100/C44 are more prominent, and the six values are occupational descriptions, not personal scores. Use T1–T4 to see accurate material checking, records and handover, and do not screen by personality type thresholds.
The precise JobZone3 and respondent education are US preparation context, and the BLS parent group apprenticeship and local plumbing licensing are not a unified Chinese threshold. Actual height, piping, electrical and testing work, design and acceptance are checked separately per location and position.
Use T1–T4 to produce four paper portfolio pieces on material differences, record completeness, version statements and anomaly handover, keeping the first and revised drafts, marked fictional, without operating real equipment or pretending to have project experience.
No. T2 has unapproved C-A / C-B and S-A short by 1, T3 is missing T, and P09:40 is outside the 10:00–10:15 exercise window. Maintenance V2 does not supply the material and inspection basis; materials go to C, records to A and the status is explained to B; the document role has no operating approval authority.
Precise 47-2152.04 Updated2025 task, interest and preparation, BLS2025May plumbers parent group wages and the 2025–2035 projection were verified this round. Precise tasks do not equal independent parent group statistics.
This round verified the DOE2024 specific US hot water project and the O*NET plumbers and HVAC and refrigeration profiles. NBS2025, the OEWS method, ILO2025, arxiv2023v5, NIST2024 and the solar management, engineering, photovoltaic and electrical project profiles reuse the versions already verified for this target, and repetition does not add independence.
Insufficient evidence: no precise Chinese wage employer sample, US independent thermal wage and employment, actual AI adoption causality or direct personality validity was obtained, and parent group broad context and cross-occupation research cannot be substituted.
The T1–T4 models and quantities, time rules and handover, and the seven-day answer portfolio plan are the author's fictional design. They are only a paper record experience, not a technical standard, real recruitment, an actual project or proof of qualification or hiring.
O*NET thermal 47-2152.04 is used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
Precise hot water installation and repair, interests and preparation, without granting individual work authority or independent wages.
O*NET / U.S. Department of Labor
United States
Updated2025
official occupation or methodology reference
Occupation-specific
Precise hot water installation and repair, interests and preparation, without granting individual work authority or independent wages.
2026-10-02
The BLS plumbers parent group occupational outlook is used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
The 47-2152 parent group median of 63800, the 44150 / 108420 percentiles and the industry values are not independent thermal statistics.
U.S. Bureau of Labor Statistics
United States
2025May；2025–2035
official occupation or methodology reference
contextual
The 47-2152 parent group median of 63800, the 44150 / 108420 percentiles and the industry values are not independent thermal statistics.
2026-10-01
This round verified the US 2025–2035 table 1.2: 510.6 thousand to 545.2 thousand, official net 34.5 thousand, 6.8%, annual average 42 thousand including replacements.
The BLS2025–2035 US 47-2152 plumbers, pipefitters and steamfitters parent group 510.6 thousand to 545.2 thousand, official net 34.5 thousand, 6.8%, annual average 42 thousand including replacements, with rounded endpoints not replacing the official net increase; not the thermal sub-occupation or an AI or personal probability.
U.S. Bureau of Labor Statistics
United States
2025–2035
official occupation or methodology reference
contextual
The 47-2152 piping-related parent group contains multiple occupations and does not list 47-2152.04 separately; the overall projection is not an AI adoption or replacement rate or an individual unemployment probability, the annual average openings include replacements, and rounded endpoints do not replace the official net increase.
2026-10-02
The BLS OEWS wage definitions are used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
Salaried excludes the self-employed; the 2080 standard annual hours are not a real contract, and the method does not provide an independent thermal value.
U.S. Bureau of Labor Statistics
United States
Method verified for this target
official occupation or methodology reference
contextual
Salaried excludes the self-employed; the 2080 standard annual hours are not a real contract, and the method does not provide an independent thermal value.
2026-10-01
This round checked the 2025 source table 2/5 and notes: urban construction non-private 92036 and private 66275 yuan pre-tax annual averages, for all employed persons in the industry rather than this occupation's wage.
The 47-2152.04 residential, commercial and industrial solar water heating system installation and repair tasks were checked, and construction was selected for the construction and installation employer direction; equipment manufacturing, energy operation and specialised repair service units need their main industry checked separately. The NBS pre-tax annual averages for all employed persons in the two types of urban construction units are an industry reference, not a thermal installer wage.
National Bureau of Statistics
Mainland China
2025; published 2026-05-15
official statistical release
Industry reference
A broad industry reference for the construction and installation employer direction; equipment manufacturing, energy operation and specialised repair are checked separately, not an independent thermal wage or individual income.
2026-10-02
The National Bureau of Statistics broad classification boundaries are used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
A duplicate of the original table classification adds no independence and does not establish a Chinese qualification or wage correspondence for this occupation.
National Bureau of Statistics
Mainland China
2025; verified for the same target
official statistical release
Industry reference
A duplicate of the original table classification adds no independence and does not establish a Chinese qualification or wage correspondence for this occupation.
2026-10-01
The O*NET thermal system preparation context is used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
JobZone3 and respondent education are not a unified Chinese degree or duration; US preparation materials cannot serve as mandatory Chinese rules.
O*NET / U.S. Department of Labor
United States
Updated2025
official occupation or methodology reference
Occupation-specific
JobZone3 and respondent education are not a unified Chinese degree or duration; US preparation materials cannot serve as mandatory Chinese rules.
2026-10-01
The O*NET hot water system context is used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
Rooftop piping function checks and owner communication tasks do not provide an incident rate for this occupation.
O*NET / U.S. Department of Labor
United States
Updated2025
official occupation or methodology reference
Occupation-specific
Rooftop piping function checks and owner communication tasks do not provide an incident rate for this occupation.
2026-10-01
The DOE2024 solar hot water project auxiliary materials are used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
An island project Job Aid, referenced only for manufacturer specifications and handover; no operating values are reproduced and it is not treated as a Chinese rule.
U.S. Department of Energy
United States
Published June 2024; document hosting directory 2024-10
official occupation or methodology reference
contextual
An island project Job Aid, referenced only for manufacturer specifications and handover; no operating values are reproduced and it is not treated as a Chinese rule.
2026-10-01
The O*NET thermal system inspection record tasks are used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
The tasks support the inspection objects and are not actual AI adoption, an HR posting or validity research for T1–T4.
O*NET / U.S. Department of Labor
United States
Updated2025
official occupation or methodology reference
Occupation-specific
The tasks support the inspection objects and are not actual AI adoption, an HR posting or validity research for T1–T4.
2026-10-01
The DOE2024 hot water installation material boundaries are used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
A duplicate DOE entry is not additional research; the materials do not grant all on-site licences, design signing or personal ability.
U.S. Department of Energy
United States
Published June 2024; document hosting directory 2024-10
official occupation or methodology reference
contextual
A duplicate DOE entry is not additional research; the materials do not grant all on-site licences, design signing or personal ability.
2026-10-01
The ILO2025 generative AI task exposure is used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
Cross-occupation potential exposure is not actual thermal adoption, a replacement rate or wage causality.
International Labour Organization
Cross-occupation
2025; verified for this target
research report
contextual
Cross-occupation potential exposure is not actual thermal adoption, a replacement rate or wage causality.
2026-10-01
This page's T1–T4 paper thermal system records are used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
The rules, model times and answer portfolio are all fictional, not technical standards, recruitment or on-site experience.
FermatMind / Fermat Testing
Editorial simulation
Current version
editorial synthesis
Editorial synthesis
The rules, model times and answer portfolio are all fictional, not technical standards, recruitment or on-site experience.
2026-10-01
The NIST generative AI risk profile is used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
A voluntary risk management framework, not a measured benefit for this occupation or a mandatory Chinese regulation.
National Institute of Standards and Technology
Cross-industry
2024-07; verified for this target
voluntary risk management framework
contextual
A voluntary risk management framework, not a measured benefit for this occupation or a mandatory Chinese regulation.
2026-10-01
The GPTs are GPTs task exposure study is used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
The task assessment does not measure real employer adoption or a disappearance year for this occupation.
Eloundou et al.
United States, cross-occupation
2023-08-21 v5; verified for this target
working paper
contextual
The task assessment does not measure real employer adoption or a disappearance year for this occupation.
2026-10-01
The BLS parent group projections and causality boundaries are used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
A duplicate ep adds no independent research; the parent group projection does not explain the AI cause or serve as an actual thermal adoption survey.
U.S. Bureau of Labor Statistics
United States
2025–2035
official occupation or methodology reference
contextual
A duplicate ep adds no independent research; the parent group projection does not explain the AI cause or serve as an actual thermal adoption survey.
2026-10-01
O*NET heating, air conditioning and refrigeration 49-9021.00 is used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
HVAC and refrigeration objects differ from solar hot water, and are not an employer posting or mutual qualification recognition.
O*NET / U.S. Department of Labor
United States
Updated2026; verified this round
official occupation or methodology reference
contextual
HVAC and refrigeration objects differ from solar hot water, and are not an employer posting or mutual qualification recognition.
2026-10-01
The duplicate entry to the O*NET precise hot water profile is used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
The same profile as onet, supporting hot water objects; a duplicate adds no independent evidence.
O*NET / U.S. Department of Labor
United States
Updated2025
official occupation or methodology reference
Occupation-specific
The same profile as onet, supporting hot water objects; a duplicate adds no independent evidence.
2026-10-01
O*NET photovoltaic installation 47-2231.00 is used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
Photovoltaic power generation assembly, installation and maintenance do not replace solar hot water training.
O*NET / U.S. Department of Labor
United States
Updated2026; verified for this target
official occupation or methodology reference
contextual
Photovoltaic power generation assembly, installation and maintenance do not replace solar hot water training.
2026-10-01
O*NET solar installation managers 47-1011.03 is used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
Crew, resource and work sequence coordination differs from individual hot water hands-on work and does not guarantee promotion.
O*NET / U.S. Department of Labor
United States
Updated2025; verified for this target
official occupation or methodology reference
contextual
Crew, resource and work sequence coordination differs from individual hot water hands-on work and does not guarantee promotion.
2026-10-01
O*NET solar energy systems engineers 17-2199.11 is used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
Analysis and design differ from installation and maintenance and do not grant design signing authority.
O*NET / U.S. Department of Labor
United States
Updated2025; verified for this target
official occupation or methodology reference
contextual
Analysis and design differ from installation and maintenance and do not grant design signing authority.
2026-10-01
O*NET plumbers 47-2152.00 is used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
Broader water, steam, air and liquid piping, not mutually recognized with thermal tasks or Chinese qualifications.
O*NET / U.S. Department of Labor
United States
Updated2026; verified this round
official occupation or methodology reference
contextual
Broader water, steam, air and liquid piping, not mutually recognized with thermal tasks or Chinese qualifications.
2026-10-01
O*NET hot water owner explanation tasks are used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
Supports operation and maintenance and diagnostic safety explanations, and is not the source of the T1–T4 fictional rules.
O*NET / U.S. Department of Labor
United States
Updated2025
official occupation or methodology reference
Occupation-specific
Supports operation and maintenance and diagnostic safety explanations, and is not the source of the T1–T4 fictional rules.
2026-10-01
The BLS parent group national wage entry point is used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
Only the OOH parent group 10 / 50 / 90 are used; 25 / 75 were not verified and it is not called an independent thermal distribution.
U.S. Bureau of Labor Statistics
United States
2025May
official occupation or methodology reference
contextual
Only the OOH parent group 10 / 50 / 90 are used; 25 / 75 were not verified and it is not called an independent thermal distribution.
2026-10-01
O*NET project management 13-1082.00 is used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
Project schedule and cost coordination requires separate training, and record experience does not automatically become management qualifications.
O*NET / U.S. Department of Labor
United States
Updated2026; verified for this target
official occupation or methodology reference
contextual
Project schedule and cost coordination requires separate training, and record experience does not automatically become management qualifications.
2026-10-01
O*NET electrical engineering 17-2071.00 is used for the corresponding objects or context in this text, and the reused verified versions are labelled as such.
Electrical system and equipment design and testing differ from hot water material counting and are not proven by a paper exercise.
O*NET / U.S. Department of Labor
United States
Updated2026; verified for this target
official occupation or methodology reference
contextual
Electrical system and equipment design and testing differ from hot water material counting and are not proven by a paper exercise.
2026-10-01