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Brennan Heating and Air Conditioning

4.6
(2241 reviews)

Business Details

4601 S 134th Pl, Seattle, WA
98168, United States
(877) 273-6626
https://www.brennanheating.com/?utm_source=google&utm_medium=organic&utm_campaign=GMBlisting

About

HVAC ContractorElectricianExterior LightingGenerator Service & RepairAir Conditioning ContractorHeating ContractorWater Heater SalesAir Duct Cleaning Service
Residents of Seattle, WA, and the surrounding areas have trusted Brennan Heating & Air Conditioning for more than 30 years. We offer a wide variety of home improvement products, including furnaces, air conditioners, heat pumps, select gas fireplaces, indoor air quality products, gas and tankless water heaters, electrical services like panel upgrades, wiring, lighting installations, EV chargers, and more. Whatever your heating, cooling, or electrical needs, our energy consultants will help you find the right products at the best price. We guarantee our workmanship and treat your home with care and respect. Our knowledgeable technicians will keep your equipment running smoothly for years to come. Contact us today!

Location

Brennan Heating and Air Conditioning
4601 S 134th Pl, Seattle, WA
98168, United States

Hours

Monday8:00 AM - 5:00 PM
Tuesday8:00 AM - 5:00 PM
Wednesday8:00 AM - 5:00 PM
Thursday8:00 AM - 5:00 PM
Friday8:00 AM - 5:00 PM
SaturdayClosed
SundayClosed

Reviews

4.6
2,241 reviews
5 stars
1,862
4 stars
135
3 stars
34
2 stars
38
1 star
172
  • TR
    Terry Robertson
    6 days ago
    1.0
    I had a furnace and heat pump installed from Brennan in 2018..I get a call the day of the installation and the salesperson said the heat pump that was sold to me was not in the warehouse..He promises me an upgrade..The heat pump they bring out is for a big commercial building..I was told later by another HVAC company ...this heat pump and furnace will turn on and off more than a normal heat pump which is when the most wear of a system is caused..Brennan also installed a furnace at a rental property... a valve inside the furnace they installed has a small gas leak..Best Choice calls Lennox and Lennox says Brennan never registered my furnace within the 60 day registration period required to get a 10 year warranty...I have to spend over 990 $ for labor and a valve that should be free...Just a word of advice...look at Brennans worst reviews before you call this company...I left a message with Brennan's secretary and was promised a call back this morning by 9am...I never received a call back. (added to my earlierpost)>>>.I looked at my cell phone ..my wife's cell phone and my land-line No one from Brennan has called me back..I received a call back finally at 130 pm...not in the morning like Brennan's reply suggests...They wanted to charge me a service call to inspect the gas valve that was confirmed leaking by Puget Sound Energy and Best Choice ... Lennox said that Brennan did not register my furnace within the 60 day registration period unlike the reply from Brennan It's sad people from Costco don't know what Brennan is like... Costco's preferred heating contractor...
  • AG
    Avinash Gupta
    May 8, 2026
    1.0
    Pathetic customer service. Their technician was supposed to arrive between 1:00 pm - 3:00 pm. No one ever showed up. I called at 3:00 pm to check and they mentioned the technician will be there in 20-30 minutes. Even got a text and an email that the technician will be home soon. But again no one showed up. Stay away from Brennan for any HVAC work, their service is very poor
  • JC
    Jo Chandler
    Mar 31, 2026
    5.0
    Daniel was informative, friendly, & knowledgeable.
  • BA
    Becca April
    Mar 28, 2026
    1.0
    They are $280 just to come look. Other places quoted free to look and 99$ service cost.
  • NH
    Nguyen Henry
    Mar 18, 2026
    1.0
    called them to come for a free estimate, 1 month later they emailed me for a $317.81 "bill" for a free estimate. I emailed them a few times about this but they keep chasing after me for this bill. their estimate also came up with 10k of dollar for a water heater replacement (just for labor), I called a different guy and he charged me much lower price (2.5k for both labor and new heater)

Brand Certified Facts from Brennan Heating and Air Conditioning

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Certified May 17, 2026Yext Knowledge Graph
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