Geothermal.contractors

Sunset Air Incorporated has served the Olympia and Thurston County region since 1976, offering geothermal heat pump installation, repair, maintenance, and replacement for residential and light commercial properties. The company installs ground-source systems in which pipes are buried in the yard and a heat pump circulates a water-methanol mixture through the loop to extract and deliver heat. Sunset Air operates offices in Lacey and South Bend, Washington, providing coverage from South Puget Sound to the Pacific coast. The company is a Carrier Factory Authorized Dealer and Certified Ductless Pro, and holds an A+ BBB accreditation. In 2026 Sunset Air was recognized as Thurston Green Large Business of the Year by the Thurston County Chamber of Commerce. Construction contractor license SUNSEA*220CM and electrical contractor license SUNSEA9I15B1. Verified active operator per https://residential.sunsetair.com/ + https://residential.sunsetair.com/hvac-services/heating/geothermal-heating-systems/ (WA import 2026-06-02)