# How to check an HVAC license by state

Find the right register, match the business identity and confirm the scope before you hire.

Updated 2026-11-10. Also on the [web page](https://hvacpros.fyi/guides/how-to-check-hvac-license-by-state).

Start with the state and city where the work will happen. Ask the contractor for its legal business name, license number, license type and issuing agency. Then check the agency's own register. [ENERGY STAR, 10 Tips for Hiring a Heating and Cooling Contractor](https://www.energystar.gov/saveathome/heating-cooling/10-tips-hiring), fetched 2026-11-10 recommends checking state license and insurance requirements before hiring.

## Find the starting point for your state

[ServiceTitan, HVAC Licenses](https://www.servicetitan.com/licensing/hvac), fetched 2026-11-10 provides a state-by-state directory for US HVAC licensing. Select your state there to find the agency and local context. It is a secondary reference. Confirm current requirements with the issuing agency and your local building department. Do not treat a directory entry as proof of permission to perform your job.

For example, ServiceTitan's fetched guide describes state licensing in Alabama, mechanical administrator licensing in Alaska, and local licensing in Colorado. Those examples show why a single national search is not enough. They do not replace a current agency check for your address and scope.

## State reference index

These ServiceTitan state references were each fetched on 2026-11-10. Use them to locate the responsible agency, then verify the current record with that agency. They are starting points, not official license verification results.

| State | Starting reference |
| --- | --- |
| Alabama | [State reference](https://www.servicetitan.com/licensing/hvac/alabama) |
| Alaska | [State reference](https://www.servicetitan.com/licensing/hvac/alaska) |
| Arizona | [State reference](https://www.servicetitan.com/licensing/hvac/arizona) |
| Arkansas | [State reference](https://www.servicetitan.com/licensing/hvac/arkansas) |
| California | [State reference](https://www.servicetitan.com/licensing/hvac/california) |
| Colorado | [State reference](https://www.servicetitan.com/licensing/hvac/colorado) |
| Connecticut | [State reference](https://www.servicetitan.com/licensing/hvac/connecticut) |
| Delaware | [State reference](https://www.servicetitan.com/licensing/hvac/delaware) |
| Florida | [State reference](https://www.servicetitan.com/licensing/hvac/florida) |
| Georgia | [State reference](https://www.servicetitan.com/licensing/hvac/georgia) |
| Hawaii | [State reference](https://www.servicetitan.com/licensing/hvac/hawaii) |
| Idaho | [State reference](https://www.servicetitan.com/licensing/hvac/idaho) |
| Illinois | [State reference](https://www.servicetitan.com/licensing/hvac/illinois) |
| Indiana | [State reference](https://www.servicetitan.com/licensing/hvac/indiana) |
| Iowa | [State reference](https://www.servicetitan.com/licensing/hvac/iowa) |
| Kansas | [State reference](https://www.servicetitan.com/licensing/hvac/kansas) |
| Kentucky | [State reference](https://www.servicetitan.com/licensing/hvac/kentucky) |
| Louisiana | [State reference](https://www.servicetitan.com/licensing/hvac/louisiana) |
| Maine | [State reference](https://www.servicetitan.com/licensing/hvac/maine) |
| Maryland | [State reference](https://www.servicetitan.com/licensing/hvac/maryland) |
| Massachusetts | [State reference](https://www.servicetitan.com/licensing/hvac/massachusetts) |
| Michigan | [State reference](https://www.servicetitan.com/licensing/hvac/michigan) |
| Minnesota | [State reference](https://www.servicetitan.com/licensing/hvac/minnesota) |
| Mississippi | [State reference](https://www.servicetitan.com/licensing/hvac/mississippi) |
| Missouri | [State reference](https://www.servicetitan.com/licensing/hvac/missouri) |
| Montana | [State reference](https://www.servicetitan.com/licensing/hvac/montana) |
| Nebraska | [State reference](https://www.servicetitan.com/licensing/hvac/nebraska) |
| Nevada | [State reference](https://www.servicetitan.com/licensing/hvac/nevada) |
| New Hampshire | [State reference](https://www.servicetitan.com/licensing/hvac/new-hampshire) |
| New Jersey | [State reference](https://www.servicetitan.com/licensing/hvac/new-jersey) |
| New Mexico | [State reference](https://www.servicetitan.com/licensing/hvac/new-mexico) |
| New York | [State reference](https://www.servicetitan.com/licensing/hvac/new-york) |
| North Carolina | [State reference](https://www.servicetitan.com/licensing/hvac/north-carolina) |
| North Dakota | [State reference](https://www.servicetitan.com/licensing/hvac/north-dakota) |
| Ohio | [State reference](https://www.servicetitan.com/licensing/hvac/ohio) |
| Oklahoma | [State reference](https://www.servicetitan.com/licensing/hvac/oklahoma) |
| Oregon | [State reference](https://www.servicetitan.com/licensing/hvac/oregon) |
| Pennsylvania | [State reference](https://www.servicetitan.com/licensing/hvac/pennsylvania) |
| Rhode Island | [State reference](https://www.servicetitan.com/licensing/hvac/rhode-island) |
| South Carolina | [State reference](https://www.servicetitan.com/licensing/hvac/south-carolina) |
| South Dakota | [State reference](https://www.servicetitan.com/licensing/hvac/south-dakota) |
| Tennessee | [State reference](https://www.servicetitan.com/licensing/hvac/tennessee) |
| Texas | [State reference](https://www.servicetitan.com/licensing/hvac/texas) |
| Utah | [State reference](https://www.servicetitan.com/licensing/hvac/utah) |
| Vermont | [State reference](https://www.servicetitan.com/licensing/hvac/vermont) |
| Virginia | [State reference](https://www.servicetitan.com/licensing/hvac/virginia) |
| Washington | [State reference](https://www.servicetitan.com/licensing/hvac/washington) |
| West Virginia | [State reference](https://www.servicetitan.com/licensing/hvac/west-virginia) |
| Wisconsin | [State reference](https://www.servicetitan.com/licensing/hvac/wisconsin) |
| Wyoming | [State reference](https://www.servicetitan.com/licensing/hvac/wyoming) |

## Check the record itself

California's [CSLB Check a License tool](https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx), fetched 2026-11-10, accepts a license number or business search. Start with the contractor's number, then match the legal name to the estimate. Use the equivalent official tool for your own jurisdiction.

Record these items without filling gaps by guesswork:

- The exact business name and number shown in the register.
- The license classification and current status.
- Any expiry date, restriction or disciplinary information the register shows.
- The register URL and the date you checked it.
- Questions that need a direct answer from the agency.

Ask the agency whether the classification covers the proposed work. Ask the local building department who is responsible for any required approvals. Do not assume a license from another state applies at your property.

## Match the paperwork

Compare the register name with the estimate and agreement. Ask the contractor to explain any difference between a trading name and the licensed legal entity. Request current insurance evidence and verify it through the insurer or agent. ENERGY STAR's hiring guidance above recommends checking insurance requirements and calling customer references.

## Keep credentials separate

US [EPA Section 608 certification requirements](https://www.epa.gov/section608/section-608-technician-certification-requirements), fetched 2026-11-10, concern technicians who work on equipment that could release refrigerants. A technician credential and a contractor license answer different questions. Do not use either as a substitute for the other.

## Canadian properties

Use the province and the work type to find the responsible regulator. [Technical Safety BC's contractor search](https://www.technicalsafetybc.ca/regulatory-resources/find-a-licensed-contractor), fetched 2026-11-10, lists contractors licensed for regulated work in its jurisdiction. Confirm the scope directly. A BC record does not establish authorization elsewhere.

Keep the verification with your quote. Recheck if the business changes or the work starts later. HVAC Pros does not certify or recommend a contractor.

## Questions

### Is a trade association listing a license check?

No. Check the issuing agency and match its record to the contractor you plan to hire.

### What if I cannot find the name?

Ask for the legal name and license number. Contact the agency before treating the contractor as licensed.