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Where the 77 comes from.

Three components - Automation Resistance, Structural Moat, and Demand - add up to 77.

Data note

Federal labor data does not count heat-pump installers separately; the wage, workforce, openings, and AI-exposure numbers use Heating, Air Conditioning, and Refrigeration Mechanics and Installers as the public comparison. Heat pumps are a specialty inside the broader HVAC market.

FJP Durability Score
77/100
Automation Resistance
35/40

Automation Resistance is high because AI helps design, quoting, scheduling, rebate paperwork, and diagnostics, while installation, refrigerant work, airflow checks, wiring, commissioning, and comfort troubleshooting remain field work. That matters for training choice, field risk, and automation exposure.

Sub-components
Substitution Resistance
29/30

Observed AI exposure for the broader HVAC occupation is 0%, and modeled median job-loss risk is 0%. That fits installation and commissioning because the work involves equipment placement, refrigerant, airflow, wiring, ducts, drains, controls, and building-specific troubleshooting.

Sources feeding this sub-component
Anthropic labor-market impacts → Reports 0.0% observed AI exposure for the broader HVAC mechanic and installer occupation.
Tufts American AI Jobs Risk Index → HVAC Mechanics and Installers show 26.9 exposure, with 0% job-loss output in the median and fast scenarios.
IFR World Robotics 2025 and papers → Variable-site HVAC installation remains outside broad deployed robotics.
Augmentation Leverage
6/10

Software can speed load calculations, estimates, scheduling, customer communication, rebate paperwork, and connected-equipment diagnostics. Those tools can make a contractor faster and help a technician troubleshoot, but field hours still involve access, tools, refrigerant, airflow, wiring, ducts, and commissioning.

Sources feeding this sub-component
ServiceTitan 2026 commercial specialty contractor report → Shows rising contractor AI adoption, much of it outside direct field execution.
Sage/AGC 2026 Construction Hiring and Business Outlook → Shows AI investment concentrated in office/admin, estimating, and design or preconstruction work.
Structural Moat
26/35

Structural Moat comes from refrigerant certification, state HVAC or electrical rules, manufacturer training, field conditions, troubleshooting depth, and robotics resistance, with uneven licensing as the main qualifier. That matters for licensing, training depth, and seat protection.

Sub-components
Physical & Environmental
9/10

Federal physical data for the broader HVAC occupation shows a mean lift of 47.5 pounds and standing or walking for 81% of the day. Heights, wetness, contaminants, rooftops, attics, crawl spaces, equipment rooms, outdoor units, and awkward access keep the physical barrier high.

Sources feeding this sub-component
Bureau of Labor Statistics Occupational Requirements Survey 2025 → Mean maximum lift 47.5 lb; standing/walking 81%; heights 92.2%; wetness 55.2%; hazardous contaminants 45.4% for SOC 49-9021.
Bureau of Labor Statistics Occupational Outlook Handbook - HVAC Mechanics and Installers → Describes installation, maintenance, and repair work for heating, air conditioning, and refrigeration systems.
Regulatory Moat
6/12

EPA refrigerant certification is required for regulated refrigerant work, and state HVAC or electrical rules can apply by scope. The gate is meaningful but not universal because heat-pump installation does not have one national license across all work arrangements.

Sources feeding this sub-component
EPA refrigerant technician certification requirements → Shows certification requirements for work that could release refrigerants.
CareerOneStop / DOL licensed occupations data → Shows HVAC and electrical license requirements vary by state.
Bureau of Labor Statistics Occupational Requirements Survey 2025 → License, certification, or registration required for 44.5% of SOC 49-9021 jobs.
Robotics Resistance
8/8

Heat pump work changes by home, building, outdoor unit, indoor equipment, duct condition, line-set path, wiring, controls, and commissioning result. Current robotics evidence does not show broad replacement of HVAC retrofit crews in those variable field settings.

Sources feeding this sub-component
IFR World Robotics 2025 and papers → Separates factory automation from variable building-site HVAC work.
Bureau of Labor Statistics Occupational Outlook Handbook - HVAC Mechanics and Installers → Grounds the occupation in field installation, maintenance, and repair.
Credential Depth
3/5

The parent HVAC profile points to postsecondary nondegree training and long-term on-the-job learning. EPA refrigerant certification is mandatory for refrigerant work, and state rules can add more gates, but the path varies across residential, commercial, install, and service shops.

Sources feeding this sub-component
Bureau of Labor Statistics Occupational Outlook Handbook - HVAC Mechanics and Installers → Lists postsecondary nondegree award, no prior experience, and long-term on-the-job training.
O*NET Online - HVAC Mechanics and Installers → Places HVAC mechanics in Job Zone 3 and shows postsecondary certificate prevalence.
EPA refrigerant technician certification requirements → Documents the refrigerant credential gate.
Demand
16/25

Demand combines the large parent HVAC market with heat-pump momentum from electrification policy, rebates, utility economics, cold-climate equipment, and contractor capacity, all of which vary locally. That matters for openings, geography, timing, and local search.

Sub-components
Volume
7/10

Federal labor data does not isolate heat pump installers; the parent HVAC occupation shows about 425,200 jobs, 8.1% growth, and about 40,100 annual openings. That is a strong mechanical base, but it is not a heat-pump-only count.

Sources feeding this sub-component
Bureau of Labor Statistics Employment Projections → Parent HVAC occupation: 425.2K jobs in 2024, 459.7K in 2034, 8.1% growth, and 40.1K annual openings.
Source Quality
6/8

Heat-pump work has real electrification demand inside HVAC, shaped by rebates, tax credits, utility programs, climate, customer economics, and contractor adoption. The specialty is real, but the evidence is partly a parent-occupation read plus policy-driven heat-pump momentum.

Sources feeding this sub-component
ENERGY STAR heat pump information → Heat-pump adoption creates a specialty lane inside HVAC work.
Resilience
3/7

The broader HVAC trade remains durable even if heat-pump incentives slow. The heat-pump-specific lift is more exposed to policy and rebate shocks, utility economics, and local climate adoption, so the specialty is less resilient than the parent trade.

Sources feeding this sub-component
IRS energy-efficient home improvement credit → Federal credits and rebate economics affect heat-pump-specific project timing.
What would move the score
Scenario 1
Federal heat-pump incentives shrink materially.

A rollback that meaningfully cuts heat-pump tax credits or state-administered rebate funding would weaken specialty demand. A paperwork delay would not be enough; the trigger is a policy change large enough to reduce customer economics. That would affect customer payback and contractor hiring plans.

Direction
Down, meaningful
Components affected
Demand
Scenario 2
Large state rebate programs stay uneven.

If several high-population states delay, pause, or underfund heat-pump rebate programs for a sustained period, the heat-pump-specific lift would weaken. The broader HVAC occupation would still be durable. The trigger is enough unevenness to slow installs in major markets. That affects contractor staffing.

Direction
Down, modest
Components affected
Demand
Scenario 3
A2L refrigerant transition slows installs.

The refrigerant transition would matter if certification, safety, or equipment-availability problems create persistent install delays. Normal training updates would not be enough; the trigger is a measurable bottleneck that keeps qualified technicians from handling new systems. That would affect actual job throughput, not just classroom requirements.

Direction
Down, modest
Components affected
Structural Moat, Demand
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Last reviewed June 2026 · Next September 2026