Residents of Seattle, WA and the surrounding Puget Sound areas have relied on the reliable services provided by Brennan Heating & Air Conditioning for more than 30 years. Our commitment to ensuring our customers' comfort throughout the year has garnered the respect and loyalty of residents all around Seattle and the Puget Sound area. We believe in offering our Seattle neighbors the best in customer service by hiring only the best technicians who have completed intensive training and believe in 100% customer satisfaction.

Since 1987, Brennan Heating & Air Conditioning has served tens of thousands of satisfied customers throughout the Puget Sound region. We offer a wide variety of home improvement products including furnaces, air conditioners, heat pumps, hydronic heating systems, indoor air quality products, gas water heaters, tankless water heaters, and more. Regardless of your home heating and cooling needs, our energy consultants will work with you to find the right products at the right price. We guarantee our workmanship and we'll treat your home with care and respect.

Great experience with Brennan. Technicians were very professional and went above and beyond what the needed to do. I highly recommend this company to anyone looking for heat and air conditioning requirements.

Thomas was very professional, knowledgeable and friendly. He kept me informed throughout the entire process on both our furnace and heat pump. Would highly recommend him and be glad for him to service our system again.

Our home HVAC system had shut down. With a bit of tinkering I made it limp along for a day or two, but it quit again. Brennan dispatched Eliot to come take a look.

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