Download the list of HVAC contractors in Washington. Smartscrapers provides an accurate directory and the latest data on the number of HVAC contractors in Washington There are 2056 HVAC contractors in Washington as of April 1, 2026; which is an 0.00% increase from 2023. Of these locations, 1343 HVAC contractors which is 65.32% of all HVAC contractors in Washington are single-owner operations, while the remaining 713 which is 34.68% are part of larger brands. The top three cities with the most HVAC contractors are Seattle with 285 HVAC contractors, Tacoma with 187 HVAC contractors, Spokane with 120 HVAC contractors. Average age of HVAC contractors in Washington is 6 years and 7 months.