Greenwood Heating & Air icon

5 Series
with OptiHeat

504W11 WaterFurnace - Greenwood Heating & Air

If you are in need of a new water furnace, Greenwood Heating and Air offers high-quality HVAC products and installation services in the Seattle, Washington area. 


Hydronic. Add-on to other unit for high volume hot water users that utilizes OptiHeat vapor injection technology. Higher water temperatures for radiant floor, spa, pools, fan coils.

Diamond contractor preferred - Greenwood Heating & Air
Trane Comfort Specialist - Greenwood Heating & Air
Lennox Premier dealer - Greenwood Heating & Air
Greenwood Heatingn & Air Google
"Samuel K and his team did an excellent job on a 2-day big installation (new furnace and AC). Handled unforseen issues beautifully, kept me informed at each step, and all professionally with a positive attitude. Thanks to Samuel and to Greenwood for great service over the years."
Dave B.
Kirkland, WA
Greenwood Heating & Air Facebook
"Very satisfied with install. Very good customer service as well. Josh and Nick completed job in a timely manner...all install components put in really well and homeowners instructions completed. Job well done"
Roy A.
Kirkland, WA
Greenwood Heating & Air Yelp
"We had a new furnace & heat pump installed. Tyler D. did an excellent job installing the system and making sure everything was working correctly."
Maxine S.
Greenwood Heatingn & Air Google
"Professional and considerate to the customers needs. Totally satisfied with their service, reporting and follow up.
Julliane B.
Seattle, WA