HVAC License Requirements by State
HVAC contracting is regulated at the state level almost everywhere, and it carries a second layer most other trades don’t have: a separate federal EPA certification for anyone who handles refrigerants.
Heating, ventilation, and air conditioning (HVAC) work is licensed by most states through a dedicated mechanical or HVAC contractor license, structured similarly to electrical licensing — experience hours, a trade exam, and often a business/law exam for contractor-level licenses. What makes HVAC different from most other trades is the federal layer on top: anyone who purchases, handles, or works with refrigerants as part of HVAC or appliance-repair work needs EPA Section 608 certification, a one-time federal credential that exists independently of whatever your state requires. The two are easy to confuse and easy to under-research, since most state licensing pages don’t mention the federal requirement at all.
HVAC licensing compared: 5 states side by side
HVAC is the trade where “which license do I need?” has the least obvious answer. Three of these five states have a dedicated statewide HVAC license; New York and Illinois do not — and Chicago has no HVAC license at all. Each state name links to the full guide.
| State | Who licenses | License | Experience | Bond / insurance | Main costs | Renewal |
|---|---|---|---|---|---|---|
| California | CSLB (statewide) | C-20 Warm-Air Heating, Ventilating and Air-Conditioning | 4 years journey-level experience within the last 10; trade exam + Law & Business exam | $25,000 contractor license bond | $450 application, $200–$350 initial license | Every 2 years ($450 sole owner / $700 other entities) |
| Texas | TDLR, ACR program (statewide) | ACR Contractor, Class A (unlimited) or Class B (up to 25 tons cooling) | 48 months supervised within 72 months (or 36 months + 12 months as a certified technician) | No bond; liability insurance ($300K/$600K Class A, $100K/$200K Class B) | $115 application | $65 per year; 8 hours CE annually |
| Florida | Construction Industry Licensing Board / DBPR (statewide) | Certified Air-Conditioning Contractor, Class A or Class B (Class C closed since 1988) | Education + experience totaling about 4 years (medium confidence) | $10,000 bond ($5,000 with a 14-hour course; none if FICO score is 660+) | About $145–$245 application (depends on filing window) | About $209 every 2 years; 14 hours CE |
| New York | No statewide license — split across NYC agencies (DOB, DCWP) | No single HVAC license; closest is Oil Burner Equipment Installer (Class A/B), plus a Home Improvement Contractor license for residential work over $200 | Class A: about 4 years within 7; Class B: about 3 years within 5 (medium confidence) | — | $585 written exam (Oil Burner Installer) | — |
| Illinois | No statewide license; Chicago has no HVAC license — work needing a permit falls under the General Contractor License | General Contractor License, Classes A–E (Chicago) | No trade-experience exam | Liability insurance $1M–$5M per occurrence, by class | $300–$3,500 per year, by class (2026) | Annual |
What the table shows: Texas requires liability insurance instead of a bond and renews annually, while California and Florida both require a bond ($25,000 and $10,000 respectively, with Florida’s waivable by credit score). New York and Illinois show why a national “HVAC license” answer doesn’t exist: the practical requirement depends on the city.
Browse by state
What’s consistent across most states
- A state-issued HVAC or mechanical contractor license, required for anyone contracting HVAC work directly with customers (as opposed to working as an employee under someone else’s license).
- A minimum amount of documented trade experience before you can sit for the state licensing exam.
- A trade exam covering HVAC systems, codes, and safety, plus often a separate business/law exam for contractor-level licenses.
- EPA Section 608 certification for anyone handling refrigerants — this is federal, applies in every state, and is separate from your state HVAC license. See our EPA 608 certification guide for the four certification types and what each one covers.
What varies enough to matter
- Whether the state license is called “HVAC,” “mechanical,” or something else entirely — the underlying scope of work is often similar, but the license name and issuing board vary by state.
- Required experience hours, which are not standardized nationally.
- Bond and insurance requirements for contractor-level licenses, which vary in both whether they’re required and how much.
- Reciprocity with other states, where it exists at all — never assume it applies without checking your specific state.
Do I need EPA 608 certification even if my state already licenses HVAC contractors?
Yes. EPA Section 608 certification is a separate federal requirement that applies nationwide, regardless of what your state’s own HVAC license does or doesn’t require. It’s specifically about handling refrigerants safely and legally, not about general HVAC competency, and a state license doesn’t substitute for it.
Is EPA 608 certification a one-time thing, or does it expire?
See our dedicated EPA 608 certification guide for the current details on each certification type, since this is a common point of confusion.
Can I do HVAC work as a handyman without an HVAC license?
Generally, no, once the work involves anything beyond very minor tasks — most states specifically carve out HVAC work as requiring the dedicated HVAC or mechanical contractor license, separate from any general handyman work. If refrigerant is involved at all, EPA 608 certification applies on top of whatever state license is required.