AAA Aircare Systems: Offers air purifier consultation, sales, and service, specializing in portable and whole-house systems. Features sales information regarding commercial, residential, and industrial air quality solutions available.
Advanced Energy Savers, Inc.: A full service residential/commercial HVAC contractor.
Ballard Natural Gas Service Inc.: They specialize in the diagnosis and repair of residential heating systems, conversion burners, water heaters, and gas logs.
Glendale Heating and Air Conditioning: They install and service a wide variety of heating and air conditioning equipment.
Healthy Buildings Inc.: Indoor air quality inspections and remedies. Provides a list of services and publications.
Olson Energy Services: They offer heating and air conditioning services.
Rossoe Energy Systems: They design, manufacture, and distribute oil, gas, and electric heating equipment.
Seattle Natural Gas: They specialize in installation of gas forced air systems.
Vent-Axia Fans from Coast Products Inc.: Manufactures and distributes Vent-Axia brand ventilation and air flow products for commercial, residential and marine applications.
Ventilation Systems Inc.: Northwest distributor for Venmar, they help you solve problems with Indoor Air Quality including moisture control.