To get an HVAC license, clear two separate credentials: the contractor license your state or city requires, and the federal EPA Section 608 certification every technician needs before opening a refrigerant circuit. One never substitutes for the other. This is general education, not legal or licensing advice; confirm the current rules on your state page and with your licensing board or building department before you apply.
The state side is a patchwork, so this guide groups every state we cover by its verified regime and links each state page, where the licensing section names the board and the rules. The federal side is the same everywhere. If you are still planning the business, start with our pillar on how to start an HVAC business.
Two axes: the contractor license and EPA certification
Think of HVAC licensing as two axes that never cross. The first axis is the contractor license: a state or local credential that lets a business or its qualifying person contract for HVAC work. The second is EPA Section 608 certification: a federal credential for each technician who could open a refrigerant circuit. A licensed contractor still needs certified technicians, and a certified technician may still need a license to contract.
States with a statewide HVAC license
These states license HVAC work at the state level, though the board, the license classes, and the conditions differ. Start on your state page, then confirm with the board it names.
- Alabama: HACR Board certificates for heating and air conditioning contractors and refrigeration contractors; active status requires a performance bond naming the board.
- Arizona: Registrar of Contractors license with qualification, exam, bond, and workers compensation attestation requirements.
- Arkansas: HVACR Licensing Board license classes; proof of liability insurance at issuance and renewal; no local license required.
- California: the CSLB warm-air heating, ventilating, and air-conditioning classification, with refrigeration a separate classification.
- Connecticut: separate license classes from the Heating, Piping, Cooling and Sheet Metal Work Examining Board.
- Delaware: Master HVACR or Master HVACR Restricted license under the Board of Plumbing, HVACR Examiners.
- Florida: certified (statewide) or registered (local) air-conditioning contractor through the CILB, with an insurance affidavit.
- Georgia: Conditioned Air Contractor license, restricted or unrestricted, from the Division of Conditioned Air Contractors.
- Idaho: HVAC Board certificates of competency for contractors, specialty contractors, journeymen, and apprentices; the state has exclusive jurisdiction.
- Iowa: Plumbing and Mechanical Systems Board licenses and a contractor license with a master in charge; local licensing is preempted.
- Kentucky: master HVAC contractor license, with insurance mandatory, and journeyman HVAC mechanic license.
- Maryland: State Board of HVACR Contractors licenses from master to apprentice; insurance including completed operations is a condition of master and limited licenses.
- Michigan: mechanical contractor license by classification, plus separate boiler licensing.
- Mississippi: State Board of Contractors mechanical classification or HVAC specialty, test required, for commercial and residential work.
- Nevada: Nevada State Contractors Board license in an HVAC classification, with a monetary limit and a bond.
- New Jersey: Master HVACR Contractor license with a bond and a general liability certificate; municipal licensing is preempted.
- New Mexico: CID mechanical classifications including HVAC, plus journeyman certificates.
- North Carolina: heating licenses from the State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors, Class I for all structures or Class II for single-family detached.
- Oklahoma: CIB mechanical licenses, including HVAC; active contractor status requires a board bond and a general liability certificate.
- Rhode Island: DLT mechanical-trades licenses plus mandatory CRLB registration.
- South Carolina: LLR Contractor’s Licensing Board mechanical license with air conditioning, heating, and refrigeration subclassifications, plus a residential specialty license for heating and air installers.
- Texas: TDLR ACR Contractor License, Class A or B, with an endorsement and a general liability certificate on the agency’s form.
- Utah: DOPL HVAC contractor license under the Utah Construction Trades Licensing Act.
- Virginia: Board for Contractors license with an HVAC classification; a master tradesman is required.
- West Virginia: two layers, a Division of Labor HVAC technician license and a contractor license with an HVAC classification above value thresholds.
States with mixed or partial regimes
These states license part of the trade, license it only above a threshold, or license the business in a way that is not a stand-alone HVAC license. Read the page for your state closely.
- Louisiana: a state HVAC subclassification required for commercial projects above the mechanical threshold; New Orleans adds a city license.
- Tennessee: a state HVAC classification that is threshold-triggered, with a per-project monetary limit; a home improvement license in adopting counties.
- Ohio: a state license for commercial construction projects; residential work is regulated locally.
- Maine: the Fuel Board licenses oil, solid-fuel, propane, and natural gas technicians; no state license for pure air-conditioning or refrigeration work.
- New Hampshire: fuel gas fitting is licensed and oil-heat certification is voluntary; no state license for air-conditioning or refrigeration work.
- Massachusetts: split by trade into refrigeration, sheet metal, and oil burner credentials; no single combined HVAC license.
- Vermont: technician-level credentials only, including electrician specialty fields and fuel certifications; no general HVAC contractor license.
- Washington: contractor registration with a bond and insurance, plus the HVAC/R specialty electrician classifications; no stand-alone HVAC board.
- Oregon: a CCB contractor license and endorsement with a bond and general liability including completed operations; no stand-alone HVAC license.
- Wisconsin: an HVAC Contractor registration backed by an individual HVAC Qualifier credential.
States where HVAC licensing is local only
In these states there is no statewide HVAC contractor license, and the city or county where you work sets the rule. Check every jurisdiction you plan to serve.
- Colorado: Denver, the Pikes Peak Regional Building Department, and Aurora each run their own licensing.
- Illinois: in Chicago, HVAC work falls under the city’s general contractor license.
- Indiana: licensing is at the discretion of the local municipality.
- Kansas: local trade licenses, including the Wichita and Sedgwick County mechanical licenses and a Johnson County mechanical contractor license.
- Missouri: local licenses, including the City of St. Louis mechanical contractor license and Lee’s Summit.
- Nebraska: a statewide contractor registration that is not a trade license; Omaha and Lincoln license locally.
- New York: no statewide license; New York City licenses oil burner equipment installers and gas work rather than HVAC contractors.
- South Dakota: local mechanical registration in Sioux Falls and Rapid City, and a Watertown contractor license.
- Wyoming: city licensing in Casper, Laramie, and Cheyenne.
States with no statewide HVAC trade license
These states have no HVAC trade license at the state level but do require some other statewide credential, and local licensing still applies.
- Minnesota: no state license for mechanical contractors, but a mechanical contractor bond filed with DLI; local licensing by city; a separate high pressure piping license.
- Montana: no HVAC board or competency exam; a general construction contractor license with proof of workers compensation compliance; mechanical permits from certified cities or the state.
- North Dakota: a general contractor license requiring liability insurance and workers compensation proof; HVAC trade licenses are municipal.
- Pennsylvania: home improvement registration for residential work, which is not a trade license; municipal licensing in Philadelphia and Pittsburgh.
EPA Section 608: the federal axis
Every technician who could open a refrigerant circuit needs EPA Section 608 certification, in every state. Under the federal rule, anyone who could be reasonably expected to violate the integrity of the refrigerant circuit while maintaining, servicing, repairing, or disposing of equipment must pass an exam offered by an approved technician certification program. EPA does not issue certification cards; its technician certification page explains how to obtain one.
The rule sets four types. Type I covers small appliances. Type II covers medium-, high-, and very high-pressure appliances. Type III covers low-pressure appliances. Universal covers all three. Match each technician’s type to the equipment they touch, and keep a copy of each certificate at your place of business, as the rule requires.
One exemption matters for hiring: an apprentice is exempt while closely and continually supervised by a certified technician, and the supervising technician and the apprentice share responsibility for compliance. Our guide to EPA 608 certification and HVAC insurance covers why a certification lapse is a compliance problem your policy will not fix.
Real-World Scenario: A technician with Universal certification runs service calls for a shop in a state that licenses HVAC statewide. He decides to go out on his own across the state line, in a state where licensing is local, and assumes his federal card lets him contract anywhere. His first commercial customer asks for his city license number and a certificate of insurance. He has neither: the card proves he can handle refrigerant, not that his business can contract. He loses the job while he applies for the city license, sets up the entity, and binds a policy in the entity’s name.
Bonds and insurance tied to the license
In some states the license itself calls for a bond, proof of insurance, or both, so line them up before you apply. On the bond side, Alabama’s active status requires a performance bond naming the board, and Arizona, Nevada, New Jersey, Oklahoma, Oregon, and Washington tie a bond to the license or registration; Minnesota requires a mechanical contractor bond even without a state license. Wexford places contractor license and permit bonds.
On the insurance side, Arkansas requires proof of liability insurance, Florida an insurance affidavit, Kentucky mandatory insurance for master contractors, and Maryland insurance including completed operations. New Jersey, Oklahoma, and Texas ask for a general liability certificate, and Oregon requires general liability including completed operations. That makes general liability a licensing document as much as a policy. Some license applications also ask about workers compensation: Arizona requires an attestation of compliance, and Montana’s general contractor license requires proof.
Keep one rule across all of it: the entity on the license, the bond, and the policy should be the same entity. Our overview of HVAC contractor insurance covers each line.
How to get licensed, step by step
Work the license in order, and do not take a paid job until the steps that apply to you are done.
- Find your regime. Open your state page from the lists above and read its licensing section.
- Check the city and county. Even in a statewide state, confirm whether the local building department adds a license or registration.
- Identify the qualifying person. Read what the license asks of the individual who holds or qualifies it, including any exam.
- Form the entity first. License, bond, and insure the same business name.
- Line up the bond and insurance the license requires, and keep the certificates ready.
- Certify every technician to the right Section 608 type, and track apprentices under supervision.
- Calendar the renewals for the license, the bond, and the policies.
Once the license is in hand, commercial work opens up; our guide to getting commercial HVAC contracts covers the bidding side. When you are ready to insure the business, start a quote.