HVAC contractors in Washington — 884 companies across 66 cities, checked against the Washington L&I register.
Washington has 884 HVAC contractors listed across 66 cities, 834 of them matched to an active license on the Washington State Department of Labor & Industries register. We check licenses against state records; we do not inspect workmanship. Everett, Vancouver, Seattle account for 24% of listings.
Where the contractors are
Listings and license-verified share for the 12 largest Washington markets. The share varies by how each city's data was matched, not by how honest its contractors are.
All 66 Washington cities, A–Z
Hiring HVAC help in Washington
Answers specific to state rules. City pages add the local permit and utility details.
How do I check a Washington HVAC license?
Ask the contractor for the license number and search it on the Washington L&I lookup (official site). Every verified profile on AirProHQ links straight to it, with the number already on the page.
Why is one Washington city mostly verified and another isn't?
It reflects how each listing reached us. Listings pulled straight from the license register verify at very high rates; listings that came from permit filings or public business profiles stay unverified until we can tie them to a license. A low share is a data gap, not a warning about the city.