HVAC contractor licensing in Washington
Who licenses heating and cooling contractors in Washington, what the classes mean, and how to check one before you sign.
Statewide
Who licenses
HVAC contractors
1,059
Active licenses
in the public registry
2026Q4.2
Data version
updated monthly
Who licenses HVAC contractors
Washington Department of Labor and Industries (L&I) contractor registration licenses heating and air conditioning contractors across Washington. Relevant classes: General or Specialty contractor registration; HVAC/refrigeration electrical specialty certificate for electrical work.
How to check a contractor
- Find the license number on the quote, the truck or the website.
- Look it up in the official registry and confirm the name, class and expiry match.
- Ask for proof of liability insurance and, where required, a bond.
Sources
- Washington Department of Labor and Industries (L&I) contractor registration — https://secure.lni.wa.gov/verify/
Second opinion
Get one fair quote from a licensed local pro
Tell us the job and when suits you. We confirm by phone or text, then pass your request to one licensed contractor who covers your ZIP. Nobody else gets your number.
- We confirm the job before anyone calls you
- One contractor, never a bidding list
- License checked with the state
- Free for homeowners