HVAC licenses in
Connecticut
Connecticut licenses HVAC contractors statewide.
Official search run by Connecticut Department of Consumer Protection, Occupational and Professional Licensing (Heating, Piping, Cooling and Sheet Metal Work Examining Board) at elicense.ct.gov.
What the license should say
In Connecticut you'll see one of these on an HVAC contractor's card, bid or truck:
- S-1 Unlimited heating, piping and cooling contractor
- Individual contractor; all heating, piping, cooling and sheet metal work.
- S-2 Unlimited heating, piping and cooling journeyperson
- Individual; same scope as S-1 while employed by a licensed contractor.
- D-1 Limited warm air, air conditioning and refrigeration contractor
- Individual contractor; warm air, AC and refrigeration systems but not oil burners.
- D-2 Limited warm air, air conditioning and refrigeration journeyperson
- Individual; same scope as D-1 while employed by a licensed contractor.
- B-1 Limited gas and oil burner contractor
- Individual contractor; domestic and light commercial burners of five gallons per hour or less.
Hiring a company, not a person?
DCP licenses individuals, not companies; the business must have a licensed heating and cooling contractor (odd-numbered license such as S-1 or D-1) who alone can pull permits and sign contracts.
Doing it yourself
Persons doing electrical, plumbing, heating, cooling or sheet metal work in and about a single-family residence they own and occupy are exempt from licensing, subject to inspection and approval by the building official (CGS 20-340(11)).
Before you hire
- Contractor licensing in Connecticut (small-job limits, bonds, permits)
- How to check a license in Connecticut, step by step
- Before-you-hire checklist (one page, free PDF)
- File a complaint about an HVAC contractor (opens official site)
Keep this handy
We'll email you the one-page before-you-hire checklist, plus occasional tips on hiring safely.