Since 1957, Overlake Heating and Air Conditioning has been providing a full range of residential heating and air conditioning services to families in Mercer Island, Washington.

We Offer Products & Services for:


For fast, friendly, quality service today, please give us a call at 425.885.1224. We look forward to hearing from you!

Locally-Owned and Family Operated

Overlake has you covered throughout Mercer Island! From water heater replacement and duct cleaning to furnace repair or central air conditioning installation we’ve dedicated ourselves to honesty, quality craftsmanship, and friendly expertise for over three generations. Our highly-skilled, experienced technicians are trained to be meticulous, courteous, and perform tasks efficiently and correctly—while ensuring to be as non-invasive and tidy as possible.

What Mercer Island is saying about us. . .

“These guys are absolutely fantastic! When my heater stopped working on a cold January night I was sure I was going to have to pay a ton for repairs. These guys came out promptly and had my heater working in no time. They even gave me a lesson on how to take care of my heater properly, which I desperately needed! My repair charges were very minimal. I’m so appreciative of a company that doesn’t try to overcharge you. Honest, kind, professional!”

-Linda S.  -Mercer Island, Washington  |  Review via Yelp–read all reviews here.

Get in touch

Hey Mercer Island! If you’re living on the island and have a question about our HVAC products or services—or just want to get in touch—please fill out the form below and we’ll get back to you soon. Or you can reach us by phone at: 425.885.1224.

Overlake Heating and Air Conditioning
15239 NE 90th St
Redmond, WA 98052

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Better Business Burearu
Energy Star logo
North American Technician Excellence logo
Senior Discounts
Angie's List Super Service Award
Best of Redmond Award