HVAC licensing confuses people because it’s really two systems stacked on top of each other. The federal rule is simple and universal: if you open a refrigerant circuit anywhere in the United States, you must hold EPA Section 608 certification — no state can waive it. The state rules are all over the map: 34 states put HVAC licenses in the U.S. Department of Labor’s licensing database, some license only contractors, and a meaningful group — including New York, Pennsylvania, and Illinois — has no statewide HVAC technician license at all.
This guide sorts it out state by state: what license (if any) your state requires, what exam stands in the way, what HVAC techs earn there, and how fast the field is growing.
TL;DR
- EPA 608 is the only requirement that applies everywhere. It’s federal, it never expires, and every refrigerant-touching tech needs it — see our EPA 608 certification guide for the four types.
- 34 states have HVAC-specific licenses in the DOL database; the rest regulate through general contractor boards or local codes. That’s fewer than electricians (43) or plumbers (43) — HVAC is the least-uniformly-licensed of the big three mechanical trades.
- Median HVAC pay (BLS, May 2024) is $59,810 nationally, with a 90th percentile of $91,020. Top states: Alaska ($83,660), Massachusetts ($76,990), Connecticut ($73,910).
- 2,106 registered apprenticeship sponsors offer earn-while-you-learn HVAC training nationwide.
- Certification (EPA 608, NATE) is not the same thing as a license — the first proves competence, the second grants legal permission to work. Some states require both.
Certification vs. License: The Distinction That Runs the Trade
EPA Section 608 is a certification, required by the federal Clean Air Act for anyone who maintains, services, repairs, or disposes of equipment containing regulated refrigerants. There are four types (I: small appliances; II: high-pressure; III: low-pressure; Universal: all three). Trade schools build it into their programs; you can also test independently. Without it you cannot legally do the core work of the trade, in any state, licensed or not.
A state HVAC license is legal permission to practice or contract in that state — usually requiring documented experience (2–5 years), a trade exam, and sometimes a business/law exam for contractor tiers. This is what the table below maps.
NATE and other industry certifications are voluntary résumé-builders employers pay premiums for — our NATE certification roadmap covers when they’re worth it.
If you’re starting from zero, how to become an HVAC technician walks the full path, and our best HVAC schools guide compares programs.
HVAC License Requirements by State
How to read this table: Key licenses are the license types tied to the HVAC occupation (SOC 49-9021) in the U.S. Department of Labor’s CareerOneStop database — top three per state. Exam condenses the exam rules across those licenses. Median pay is BLS May 2024. 10-yr growth is the state workforce agency’s 2022–2032 projection. A state with no row-level license may still require EPA 608 (always) and contractor-level or municipal licensing — verify locally.
| State | Key licenses | Exam | Median pay (2024) | 10-yr growth |
|---|---|---|---|---|
| Alabama | Licensed Hvac Contractor, Licensed Refrigeration Contractor | State exam | $49,290 | +9.8% |
| Alaska | Mechanical Administrator, Motor Vehicle Air Conditioning Technician | — | $83,660 | +10.0% |
| Arizona | No statewide license in this dataset — check local/contractor rules | — | $56,580 | +18.3% |
| Arkansas | Registrant, Hvac/r Contractor, Air Conditioning Electrician | No exam / State exam | $47,240 | +9.5% |
| California | Refrigeration Contractor, Water Conditioning Contractor, Air and Water Balancing Limited Specialty Contractor | — | $65,290 | +11.2% |
| Colorado | Water Conditioning Installer, Water Conditioning Contractor | Third-party exam | $63,420 | +15.6% |
| Connecticut | Mechanical Contractor, Medical Gas & Vacuum Systems Contractor, Medical Gas & Vacuum Systems Journeyperson | — | $73,910 | +8.0% |
| Delaware | Master Hvacr, Master Hvacr Restricted, Temporary Master Plumber or Hvacr | State exam | $59,940 | +12.3% |
| Florida | Certified Mechanical Contractor, Registered Mechanical Contractor, Provisional Mechanical Plans Examiner | State exam | $50,580 | +16.9% |
| Georgia | No statewide license in this dataset — check local/contractor rules | — | $55,020 | +17.6% |
| Hawaii | Mechanic | Third-party exam | — | — |
| Idaho | Hvac Apprentice, Hvac Journeyman, Hvac Contractor | State exam | $52,730 | +26.9% |
| Illinois | No statewide license in this dataset — check local/contractor rules | — | $71,620 | +6.0% |
| Indiana | No statewide license in this dataset — check local/contractor rules | — | $60,310 | +7.8% |
| Iowa | No statewide license in this dataset — check local/contractor rules | — | $59,490 | +13.3% |
| Kansas | No statewide license in this dataset — check local/contractor rules | — | $56,750 | +8.1% |
| Kentucky | Heating, Ventilation and Air Conditioning Apprentice, Heating, Ventilation and Air Conditioning Contractor, Master, Heating, Ventilation and Air Conditioning Installer Mechanic | State exam | $58,880 | +5.3% |
| Louisiana | Medical (gas Vacuum System Verifier) | State exam | $53,510 | +9.2% |
| Maine | Oil Burner Technician, Master, Manufactured Housing Mechanic, Oil Burner Technician, Apprentice | No exam / State exam | $62,130 | -1.4% |
| Maryland | Heating, Ventilation, A/c, & Refrigeration Master, Heating, Ventilation, A/c, & Refrigeration Inspector, Heating, Ventilation, A/c, & Refrigeration Journeyman | — | $65,000 | +9.7% |
| Massachusetts | Oil Burner Technician, Refrigeration Apprentice, Theatrical Booking Agent | No exam | $76,990 | +8.6% |
| Michigan | Mechanic, Master, Mechanical Contractor, Motor Vehicle Specialty Mechanic | State exam | $60,090 | +4.6% |
| Minnesota | Mechanical Contractor Bond, Water Conditioning Contractor, Water Conditioning Installer -master | — | $73,390 | +8.0% |
| Mississippi | Heating and Air Conditioning Mechanics and Installation | Choice of state or third-party exam | $47,270 | +20.2% |
| Missouri | Automotive Service Technicians and Mechanics | No exam | $60,330 | +6.6% |
| Montana | No statewide license in this dataset — check local/contractor rules | — | $58,600 | +26.1% |
| Nebraska | No statewide license in this dataset — check local/contractor rules | — | $59,690 | +13.2% |
| Nevada | Medical Gas Installer, Plumbing and Heating Contractor (c1), Refrigeration and Air Conditioning Contractor (c21) | State exam | $59,230 | +14.8% |
| New Hampshire | No statewide license in this dataset — check local/contractor rules | — | $64,410 | +6.7% |
| New Jersey | Scale or Meter Mechanic, Refrigeration Engineer, Blue Seal, Heating, Ventilation, Air Conditioning and Refrigeration Contractor | State exam | $69,800 | +7.4% |
| New Mexico | No statewide license in this dataset — check local/contractor rules | — | $55,020 | +16.1% |
| New York | No statewide license in this dataset — check local/contractor rules | — | $66,670 | +6.5% |
| North Carolina | Heating Group 3 Technician, Heating Group 2 Contractor, Heating Group 2 Technician | State exam | $51,940 | +12.9% |
| North Dakota | Water Conditioning Installers, Water Conditioning Contractors, Water Conditioning Apprentices | No exam / State exam | $66,770 | +12.6% |
| Ohio | Hvac Certificate | State exam | $60,490 | +6.0% |
| Oklahoma | Mechanical Contractor, Mechanical Journeyman, Commercial Drilling and Plugging of Heat Exchange Wells | State exam | $50,920 | +7.7% |
| Oregon | Apprentice, Registered (industrial Trades), Apprentice Plumber (speciality), Solar Heating and Cooling System Installer | — | $62,740 | +19.3% |
| Pennsylvania | No statewide license in this dataset — check local/contractor rules | — | $61,120 | +5.6% |
| Rhode Island | Oil Burnerperson, Refrigeration Mechanic | State exam | $63,580 | +13.6% |
| South Carolina | Hvac Heating and Air, Mechanical Contractor, Mechanical Qualifying Party | — | $55,260 | +7.7% |
| South Dakota | Water Conditioning Installer, Water Conditioning Contractor, Water Conditioning Apprentice | — | $59,460 | +16.2% |
| Tennessee | No statewide license in this dataset — check local/contractor rules | — | $51,480 | +9.8% |
| Texas | Air Conditioning & Refrigeration Contractor | — | $54,050 | +17.4% |
| Utah | Contractor | — | $56,200 | +34.3% |
| Vermont | Oil Burner Installer, Propane or Natural Gas Installer | No exam / Third-party exam | $60,170 | +7.2% |
| Virginia | No statewide license in this dataset — check local/contractor rules | — | $60,630 | +6.0% |
| Washington | No statewide license in this dataset — check local/contractor rules | — | $67,630 | +11.0% |
| West Virginia | Hvac | State exam | $46,040 | +6.2% |
| Wisconsin | Lift Mechanic, Hvac Qualifier, Hvac Contractor | State exam | $62,030 | +12.9% |
| Wyoming | No statewide license in this dataset — check local/contractor rules | — | $50,920 | +23.9% |
The No-Statewide-License States
Sixteen-plus states have no HVAC-technician license in the federal database — including New York, Pennsylvania, Illinois, Indiana, Iowa, Kansas, Nebraska, New Hampshire, Montana, Wyoming, Virginia, Washington, Tennessee, Georgia, Arizona, and New Mexico. Three practical notes if you’re in one of them:
- EPA 608 still applies in full. No state can opt out of federal refrigerant rules — in unlicensed states it’s effectively the credential.
- Cities and counties fill the gap. New York City, Chicago, and most large municipalities in unlicensed states run their own mechanical licensing or permit regimes. What matters is where the job site is, not just the state.
- Contractor boards still bite. In states like Virginia, Tennessee, and Georgia, HVAC work above a dollar threshold requires a contractor license even though individual techs are unlicensed — relevant the moment you want to run your own book of business.
Getting the Experience: School, Apprenticeship, or Both
Most state licenses want 2–5 years of documented field experience. Two ways to build it:
- Trade school first (6 months–2 years): fastest route to being hirable, and many states credit classroom hours toward the experience requirement. Compare local options on our city hubs — for example Phoenix, Dallas, or Tampa.
- Registered apprenticeship (3–5 years): earn from day one with 2,106 registered sponsors nationwide; the structured hours map directly onto state license requirements. See how apprenticeships work.
FAQ
Do I need a license to do HVAC work on my own house?
Homeowner exemptions exist in most states for your own residence — but EPA 608 still applies to refrigerant work, and unpermitted mechanical work can surface at sale time. Check your state row’s agency link.
Is EPA 608 hard to get?
It’s the most accessible credential in the trade: a proctored multiple-choice exam (open-book for Type I in some formats), commonly bundled into week one of trade-school programs. Universal certification is the version worth having — it covers all equipment classes.
Which HVAC license tier should I aim for?
Follow the money in your state’s structure: technician/journeyman tiers let you work; contractor tiers let you bid work and hire others, and that’s where HVAC’s high earnings live. The 90th percentile nationally is $91,020, and most of the people earning it hold a contractor-tier license.
Sources
- License types, exam and experience requirements, and issuing agencies: CareerOneStop License Finder, sponsored by the U.S. Department of Labor (occupational licenses dataset, 2024 edition).
- Wages: BLS Occupational Employment and Wage Statistics, May 2024, SOC 49-9021.
- Job growth: state workforce agency 2022–2032 projections via Projections Central.
- Refrigerant certification rules: EPA Section 608 Technician Certification.
- Apprenticeship sponsor counts: apprenticeship.gov Partner Finder, U.S. Department of Labor.
License requirements change. Always confirm current rules with your state’s issuing agency before enrolling in a program or scheduling an exam.
