272 heat pump installers filed 15,441 heat pump permits on homes in the City of Seattle from October 2023 to September 2026; 206 filed one in the last 12 months. The middle filed job value was $8,000. The most active in the last 12 months were Greenwood Htng & Home Services (646 permits), Ballard Natural Gas Service (250) and B & T Service (242); busy is not the same as careful. Side by side: permits filed, share finished, license status and permits in the last 12 months for each firm. Pick what you value and the list re-orders.
Get references and proof of insurance before you sign. Hiring an HVAC contractor →
Top 5 by heat pump permits filed in the last 12 months. This is volume, not quality: a busy firm is not necessarily a careful one.
The 8 ZIP codes with the most heat pump permits on homes from October 2023 to September 2026. Each opens permits by trade and the most active firms there.
98115 (1,723) 98103 (1,375) 98117 (1,334) 98118 (1,063) 98125 (957) 98116 (745) 98112 (729) 98199 (723)
Before you move a slider, the list is in a default order built only from the permit record: how much of each firm’s record is this kind of job (weight 30), how often its permits reached completion (25), how many permits it filed in the last 12 months (15) and how quickly its permits closed (10). Each measure is ranked against the other 272 firms and pulled toward the middle when a record is short; a firm with a matched license problem is listed last.
The order comes from the Seattle permit file, not from reviews: 206 of 272 heat pump installers filed a permit in the last 12 months and 85% of their permits a year or more old were finished. Nobody pays to be listed or to move up, and there are no star ratings or reviews. The sliders and presets change the weights, and the order changes with them. How the records work in Seattle.
We do not rate contractors. In this page’s default order, which uses only the permit record through Sep 2026, the top 3 are Ecospark Heating & Cooling (404 permits, 99% finished), Evergreen Home Heating & Engy (627 permits, 93% finished) and Resicon LLC (204 permits, 98% finished). By permits filed alone, the most active is Greenwood Htng & Home Services with 1,810.
272 firms are on the list; the busiest filed 646 heat pump permits in the last 12 months and the middle firm filed 8 in the whole file. Line them up on the same public measures: permits filed, share of permits finished, usual filed job value and license status. Pick what matters to you and the list re-orders, for example recent activity if you need someone soon. The order comes from the permit record only, and nobody pays to be listed or to move up.
272 firms filed at least one heat pump permit on homes in the City of Seattle from October 2023 to September 2026; 206 of them filed one in the last 12 months.
207 of the 272 heat pump installers on the Seattle permit file match an active license, 43 match one that is expired, suspended or inactive, and 22 we could not match. A firm we could not match is not proven unlicensed: the match is by company name. Look any firm up by name or license number with Washington L&I contractor lookup; statuses show under each firm’s name above. How to check a contractor's license in Washington →
Three you can check against this page: “How many heat pump permits have you filed in Seattle?” (the middle firm here filed 8; 206 of 272 filed one in the last 12 months); “What value will you put on the permit?” (the usual filed value here is $8,000); “Will you pull the permit in your company’s name, and when is the final inspection?” (85% of older heat pump permits here were finished). All 10 questions and how to check each →
On this page: 272 firms filed 15,441 heat pump permits from October 2023 to September 2026, and each firm’s name opens its own permit record. Every number comes from City of Seattle (SDCI) building, trade and electrical permits on single-family and duplex homes (the city's open-data exports). To see one permit itself, search the address or permit number with the Seattle permit office. How the records work in Seattle →
We do not rate or collect reviews. Instead each of the 272 heat pump installers here is shown with its permit record: 15,441 permits, the share finished, usual filed value and license status. Read reviews on other sites and use this page to check them against the record. Reviews vs permit records →
Every number on this page comes from City of Seattle (SDCI) building, trade and electrical permits on single-family and duplex homes (the city's open-data exports): 272 firms filed 15,441 heat pump permits on homes in the City of Seattle from October 2023 to September 2026, and 206 of them filed one in the last 12 months. The middle firm has 8 permits in the whole file. A short record leaves more uncertainty, and some jobs never require a permit.
The middle recorded permit value is $8,000. That is a filed estimate, not a quote or final bill. See how we compare records.
Most Seattle heat pump permits are filed in June (130 against an average month of 100); January is the quietest (80). When each trade is busiest in Seattle →