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About Greenwood Heating And home Services

HVAC King County | Greenwood Heating and Air Conditioning Logo


When your company goes back 100 years, you are bound to have mixed messages about the history.  We now have an accurate founding date and founder. Thank you to the Zainey family and especially Jacklyn for taking the time to share the history with us. For a long time we believed we the Greenwood legacy began in 1921, we recently learned it was actually 1918. If you love local history like we do, check out the timeline below. I am sure Walter Zainey would be proud the heritage he created is still living on today.

Walter Zainey started the Greenwood Furnace Co. in the Greenwood neighborhood of Seattle in 1918 and quickly built a reputation for providing quality products and services.
Pat Martin purchased the company. Over the next 7 years, Greenwood Heating and Home Services become the 46th fastest growing company in Washington. They moved to Kirkland to expand the high quality service that Seattle had been enjoying for years to the Eastside.
Ms. Martin sold Greenwood Heating to Service Experts. Service Experts is a national chain of service companies with over 200 locations and controlled by Lennox International.
Puget Sound Roots
Michael Porter, a lifelong Seattle native having worked in the HVAC industry since 1985 purchased the business. In December of 2004 Greenwood came back to its Puget Sound roots of being owned by a local Seattle resident.
Today we have nearly 100 dedicated professionals with the single mission of 100% Customer Satisfaction. Working to become the Puget Sound’s best heating and air contractor we know we can only reach this goal by providing the Highest Quality Air Conditioning and Heating products and services and then backing it up with the industries best warranties and guarantees.
After 2 years of construction, Greenwood moves into a brand new building in Tukwila to support the growing team. We are also planning a new building to support our North operations in Everett. Now with over 180 team members out there assisting clients we need more space!


Greenwood is proud to introduce you to Walter! Walter is our mascot/spokesperson. He is named after our founder, Walter Zainey, and he is a Golden Retriever. Golden Retrievers are a Scottish breed and are known to be gentle, affectionate, and loyal. Their temperament is of a friendly, intelligent, reliable, and trustworthy nature. These traits along with Walter’s unique gold coat and green eyes make him perfect to embody the Greenwood Culture. As a trusted home service provider for over 100 years, Greenwood Heating And Home Services is committed to providing enthusiastic, reliable, and honest service. You will see more and more of Walter representing Greenwood in the future.

Why Choose Us?

We provide a wide range of heating and air conditioning repair services.

Our Core Values center around the following virtues. We  take PRIDE in the work we do and how we present ourselves. 

Top Quality, Equipment, Installation and Maintenance.

5 Star Service From Your First Phone Call to The Last.

Maintenance Service and Repair For Over 100 Years In Seattle.

Diamond contractor preferred - Greenwood Heating & Air
Trane Comfort Specialist - Greenwood Heating & Air
Lennox Premier dealer - Greenwood Heating & Air
water heater replacement seattle

Appointment Request Form

All calls to and from Greenwood Heating may be recorded for customer service and training purposes.