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HVAC licenses by state

The main HVAC license in each state we cover, side by side. Every row links to a full state guide with official sources. Checked October 24, 2026.

State	License	Training / experience	Exam	Renewal cycle	CE to renew
Texas	Certified ACR Technician	Varies, see page	Varies, see page	Every 1 year	Varies, see page
Florida	Certified Class B Air-Conditioning Contractor No state journeyman license	Varies, see page	Varies, see page	Every 2 years	14 hours per 2-year renewal cycle
California	C-20 Warm-Air Heating, Ventilating and Air-Conditioning No state journeyman license	Varies, see page	CSLB, closed book	Every 2 years (active)	Varies, see page
Virginia	Journeyman HVAC Tradesman	Varies, see page	Varies, see page	Every 3 years	3 hours per 3-year license term (per HVAC designation)
Arizona	CR-39 Air Conditioning and Refrigeration (dual) No state journeyman license	Varies, see page	Gmetrix, open book	Every 2 years	Varies, see page
North Carolina	Heating Technician (Class I)	Varies, see page	PSI, open book	Every 1 year	Varies, see page
Georgia	Conditioned Air Contractor Class I (Restricted) No state journeyman license	Varies, see page	Varies, see page	Every 2 years	4 hours per year
Washington	Specialty Electrician — HVAC/Refrigeration (06A)	4,000 hours	Varies, see page	Every 3 years	24 hours per 3 years
New Jersey	Master HVACR Contractor No state journeyman license	Varies, see page	Varies, see page	Every 2 years	5 hours per 2 years
Illinois	HVAC / mechanical contractor (local) No state journeyman license	Varies, see page	Varies, see page	Varies, see page	Varies, see page
New York	HVAC / mechanical work (local) No state journeyman license	Varies, see page	Varies, see page	Varies, see page	Varies, see page
Pennsylvania	HVAC / mechanical contractor (local) No state journeyman license	Varies, see page	Varies, see page	Varies, see page	Varies, see page
Ohio	OCILB HVAC Contractor No state journeyman license	Varies, see page	Varies, see page	Every 1 year (optional triennial)	10 hours per year
Michigan	Mechanical Contractor — HVAC Equipment No state journeyman license	Varies, see page	Varies, see page	Every 3 years	Varies, see page
Massachusetts	Refrigeration Technician	Varies, see page	Varies, see page	Per license term (renewal notices ~60 days out)	Varies, see page
Tennessee	Contractor — HVAC (CMC-C) No state journeyman license	Varies, see page	Prov, open book	Every 2 years	Varies, see page
Indiana	HVAC contractor (local) No state journeyman license	Varies, see page	Varies, see page	Varies, see page	Varies, see page
Missouri	Mechanical contractor (local) No state journeyman license	Varies, see page	Varies, see page	Every 4 years (Kansas City model)	Varies, see page
Maryland	HVACR Journeyman	Varies, see page	Varies, see page	Every 2 years	Varies, see page
Colorado	Mechanical contractor (local) No state journeyman license	Varies, see page	Varies, see page	Varies, see page	Varies, see page
Wisconsin	HVAC Qualifier	Varies, see page	Varies, see page	Every 4 years	Varies, see page
Minnesota	Mechanical contractor bond (state filing) No state journeyman license	Varies, see page	Varies, see page	Every 2 years	Varies, see page
South Carolina	Mechanical Contractor (Air Conditioning / Heating) No state journeyman license	Varies, see page	Varies, see page	Every 2 years	Varies, see page
Alabama	Heating & Air Conditioning Contractor (Active) No state journeyman license	Varies, see page	Varies, see page	Every 1 year	4 hours per year
Louisiana	Mechanical Contractor No state journeyman license	Varies, see page	Varies, see page	1, 2, or 3 years (licensee chooses at renewal)	Varies, see page
Kentucky	Journeyman HVAC Mechanic	Varies, see page	Varies, see page	Every 1 year	6 hours per year
Oregon	CCB Contractor (HVAC work) No state journeyman license	Varies, see page	PSI, open book	Every 2 years	8 hours per 2 years
Oklahoma	HVAC/R Journeyman (Limited or Unlimited)	Varies, see page	Varies, see page	Per license term (keep CE current)	6 hours per 36 months
Connecticut	Heating / Piping / Cooling Journeyperson (e.g. S-2 path)	Varies, see page	Varies, see page	Every 1 year	Varies, see page
Utah	H100 HVAC Contractor No state journeyman license	Varies, see page	Varies, see page	Per licensing period (renew before expiration)	6 hours per licensing period
Nevada	C-21 Refrigeration and Air-Conditioning Contractor No state journeyman license	Varies, see page	Varies, see page	Every 2 years	Varies, see page
Iowa	HVAC/Refrigeration Journeyperson	Varies, see page	Varies, see page	Every 3 years	8 hours per 3 years
Arkansas	HVACR Class A / B Contractor No state journeyman license	Varies, see page	Varies, see page	Every 1 year	8 hours per IMC code cycle
Kansas	HVAC / mechanical work (local) No state journeyman license	Varies, see page	Varies, see page	Varies, see page	6 hours per year
Mississippi	Residential HVAC / mechanical subcontractor license No state journeyman license	Varies, see page	Varies, see page	Every 1 year	2 hours per year
New Mexico	Journeyman Refrigeration (JR)	Varies, see page	Varies, see page	Every 3 years	16 hours per 3 years
Idaho	HVAC Journeyman	Varies, see page	Varies, see page	3 years on published fee table (watch biennial transition news)	Varies, see page
Nebraska	NDOL contractor registration No state journeyman license	Varies, see page	Varies, see page	Every 1 year	Varies, see page
West Virginia	HVAC Technician	Varies, see page	Varies, see page	Every 1 year	Varies, see page
Hawaii	C-52 Ventilating and Air Conditioning Contractor No state journeyman license	Varies, see page	Varies, see page	Every 2 years	Varies, see page
New Hampshire	Fuel Gas Service Technician No state journeyman license	2,000 hours	Varies, see page	Every 2 years	6 hours per 2 years
Maine	Limited Electrician — Refrigeration No state journeyman license	315 hours	Varies, see page	Every 2 years	Varies, see page
Montana	Construction Contractor License No state journeyman license	Varies, see page	Varies, see page	Anniversary of issuance	Varies, see page
Rhode Island	Refrigeration Journeyperson I	Varies, see page	Varies, see page	Biennial on birthday (odd/even birth year)	Varies, see page
Delaware	Master HVACR	Varies, see page	Varies, see page	Every 2 years	5 hours per 2 years (by Oct 31 even years, starting 2026)
Vermont	Type-S Journeyman — C3 Refrigeration / Air Conditioning	Varies, see page	Varies, see page	Every 3 years	8 hours per 36 months
North Dakota	ND Secretary of State contractor license No state journeyman license	Varies, see page	Varies, see page	Every 1 year	Varies, see page
South Dakota	No statewide HVAC license — municipal only No state journeyman license	Varies, see page	Varies, see page	Set by city	Varies, see page
Alaska	Mechanical Administrator — Unlimited HVAC/Sheet Metal No state journeyman license	Varies, see page	Varies, see page	Every 2 years	8 hours per 2 years
Wyoming	No statewide HVAC mechanical license — local + electrical wiring card No state journeyman license	Varies, see page	Varies, see page	Set by city (and DFPE for LM-H)	Varies, see page

"Varies, see page" means the rule isn't a single number (for example, it's set by counties or depends on the license level). The state page has the details and sources.

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