HVAC License Lookup by State

Iowa

Limited state licensing

Iowa businesses providing HVAC services need a contractor license from the Plumbing & Mechanical Systems Board. A joint application covers the contractor license and registration.

Official source retrieved 2026-09-05.

North Carolina

Limited state licensing

North Carolina’s State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors licenses contracting in HVAC and related trades.

Official source retrieved 2026-09-05.

New Hampshire

Limited state licensing

New Hampshire’s Mechanical Licensing Board rules distinguish fuel-gas licenses from voluntary oil-heating certification. Fuel-gas categories include service, equipment installation, piping, domestic appliance work and hearth installation.

Official source retrieved 2026-09-05.

Alabama

Limited state licensing

Alabama’s Board of Heating, Air Conditioning and Refrigeration Contractors handles HVAC contractor and refrigeration contractor credentials.

Official source retrieved 2026-09-05.

Utah

Limited state licensing

Utah’s Division of Professional Licensing lists an HVAC contractor credential in its current licensing fee schedule.

Official source retrieved 2026-09-05.

Minnesota

State contractor bond

Minnesota DLI says mechanical contractors do not need a state mechanical contractor license. Businesses contracting for heating, ventilation, air conditioning, refrigeration and related work must file a mechanical contractor bond with DLI.

Official source retrieved 2026-09-05.

Kansas

Local and state requirements

Kansas law allows cities and counties to license HVAC contractors and master and journeyman HVAC mechanics using local examinations. Those licenses apply within the issuing jurisdiction.

Official source retrieved 2026-09-05.

Michigan

Limited state licensing

Michigan’s Department of Licensing and Regulatory Affairs issues mechanical contractor licenses with classifications that include HVAC equipment, refrigeration, and heating or air conditioning service.

Official source retrieved 2026-09-05.

Washington

State registration

Washington’s Department of Labor & Industries requires contractor registration for HVAC contracting as a specialty. Specialty contractors work within their registered specialty.

Official source retrieved 2026-09-05.

Nevada

Limited state licensing

Nevada’s State Contractors Board licenses refrigeration and air-conditioning contracting under classification C-21 and its subclassifications.

Official source retrieved 2026-09-05.

Ohio

Limited state licensing

Ohio’s Construction Industry Licensing Board issues heating, ventilating and air-conditioning contractor licenses for construction projects covered by Chapter 4740.

Official source retrieved 2026-09-05.

South Carolina

Limited state licensing

South Carolina’s Contractors’ Licensing Board administers mechanical contractor licensing, including air-conditioning and heating work under specific subclassifications.

Official source retrieved 2026-09-05.

Wisconsin

State registration

Wisconsin’s Department of Safety and Professional Services requires an HVAC Contractor registration to install or service heating, ventilating or air-conditioning equipment.

Official source retrieved 2026-09-05.

Maine

Limited state licensing

Maine’s Fuel Board licenses oil and solid-fuel technicians and propane and natural-gas technicians. Use its fuel-specific licensing guidance for heating work.

Official source retrieved 2026-09-05.

Massachusetts

Limited state licensing

Massachusetts provides separate refrigeration apprentice, technician and contractor licenses through its occupational licensing services.

Official source retrieved 2026-09-05.

Oregon

Limited state licensing

Oregon’s Building Codes Division offers a Limited Maintenance Specialty Contractor HVAC/R credential, identified as LHR.

Official source retrieved 2026-09-05.

Mississippi

Limited state licensing

Mississippi’s State Board of Contractors provides a mechanical contractor license classification covering the work described in its classification guide.

Official source retrieved 2026-09-05.

New Mexico

State certificate

New Mexico’s Construction Industries Division issues mechanical journeyman certificates in specific classifications, including refrigeration and sheet metal.

Official source retrieved 2026-09-05.

Indiana

Local and state requirements

Indiana’s state business guide directs HVAC contracting licensing questions to the city or county where the work takes place.

Official source retrieved 2026-09-05.

Vermont

State registration

Vermont’s residential contractor registration covers qualifying residential heating-system installation or repair contracted directly with the homeowner for $10,000 or more, including labor and materials.

Official source retrieved 2026-09-05.

Tennessee

Limited state licensing

Tennessee’s contractor licensing classifications include CMC-C for HVAC, refrigeration, gas piping and solar HVAC (geothermal). Each contractor license has a work classification and monetary limit.

Official source retrieved 2026-09-05.

Wyoming

Local and state requirements

Wyoming directs contractor licensing other than electrical contracting to the local jurisdiction where construction takes place.

Official source retrieved 2026-09-05.

Pennsylvania

State registration

Pennsylvania’s Home Improvement Consumer Protection Act includes installation of central heating and air conditioning in its residential home-improvement definition. Covered contractors register with the Attorney General’s Bureau of Consumer Protection.

Official source retrieved 2026-09-05.

Louisiana

Limited state licensing

Louisiana’s State Licensing Board for Contractors administers classified contractor licenses. The statutory mechanical contractor definition covers air conditioning, refrigeration, heating and related mechanical systems for projects valued at $10,000 or more.

Official source retrieved 2026-09-05.

Georgia

Limited state licensing

Georgia’s State Construction Industry Licensing Board has a Division of Conditioned Air Contractors. Its contractor license categories include Conditioned Air Contractor Class I and Class II.

Official source retrieved 2026-09-05.

Alaska

State registration

Alaska’s mechanical-contractor registration covers contractor work in heating, air conditioning and ventilation, among other mechanical trades.

Official source retrieved 2026-09-05.

Hawaii

Limited state licensing

Hawaii’s Contractors License Board classifies C-52 as the ventilating and air conditioning contractor specialty. Its scope includes warm-air heating, air cooling, ventilation, air conditioning and related heat pumps.

Official source retrieved 2026-09-05.

Nebraska

State registration

Nebraska requires construction contractors and subcontractors to register with the Department of Labor. Its contractor-registration guidance explicitly includes heating, cooling and mechanical construction services.

Official source retrieved 2026-09-05.

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