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Brennan Heating & Air Conditioning
Heating Contractor
Today Closed
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Check out our latest blog post! These facts will shock you! Who knew air conditioning was so cool? #1 is our favorite, which one is yours?! #airconditioning  
Who knew air conditioning was so cool?! We sure wish #6 were still an option. Check out these mind-blowing facts, and let us know your favorite!
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Now that winter has come to an end it's a good time to check your furnace filter. Check out our blog to learn why it's important to replace your furnace filters!  #furnacefilters
Now that winter has come to an end it's a good time to check your furnace filter. Read our blog to learn why it's important to replace your furnace filters!
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We are proud to announce that Brennan Heating & Air conditioning has earned the service industry’s coveted Angie’s List Super Service Award, reflecting an exemplary year of service provided to members of the local services marketplace and consumer review site in 2015!
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A warm home is a happy home. How will you continue to heat your home safely? Read on to discover some important safety tips when it comes to your natural gas furnace. #NaturalGas 
Natural gas furnaces are a great alternative to electric heating. To ensure your family is safe in 2016, practice the following 4 natural gas safety tips.
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In the market for a new furnace? Learn some tips for what not to do when shopping around.
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Indoor air quality is important any time of year. Learn more from Lennox on how you can improve your indoor air quality.
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Are you aware of the benefits to having an air conditioner in your home? Check out our blog to see how the air can be improved in your home.
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Choosing a contractor can be difficult when you don't know what to look for. Check out these four components every quality contractor contains.
Get the job done right, the first time. Check out these helpful tips on how to choose a quality contractor.
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Find out why a new thermostat can change the way you live, for the better. The new capabilities of these small, but necessary devices may surprise you! #OptimumComfort  
Who knew the temperature of your own home can be changed from the palm of your hand? Discover how these necessary devices can bring you optimum comfort.
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Did you know natural gas is expected to replace coal as a primary source of U.S. power generation? Discover the many reasons why this clean energy is the smartest way to heat your home. #cleanenergy  
Find out why clean energy discussions keep pointing to natural gas. Know your options and discover why natural gas may be the best way to heat your home.
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As temperatures start to drop, our heater bills are beginning to rise. Learn about these 5 easy and effective ways to cut your heater bills this winter while still staying warm. 1. Cover Windows & Patio Doors with Plastic Film According to the U.S. Department of Energy, windows can account for 10% to 25% of … Continue reading 5 Ways to Cut Your Heater Bills this Winter →
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We love a good DIY project, but some things need to be left to the professionals. Don't let the season go by without getting your HVAC system inspected. We're here and happy to help!
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Contact Information
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4601 S 134th Pl Seattle, WA 98168
4601 South 134th PlaceUSWashingtonSeattle98168
Heating Contractor, Air Conditioning Contractor
Heating Contractor
Air Conditioning Contractor
HVAC Contractor
Today Closed
Saturday ClosedSunday ClosedMonday 7:30AM–5PMTuesday 7:30AM–5PMWednesday 7:30AM–5PMThursday 7:30AM–5PMFriday 7:30AM–5PM
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26 reviews
5 star
18 reviews
4 star
1 review
3 star
2 reviews
2 star
No reviews
1 star
5 reviews
"Great company who offers so many options to customers."
"Price and quality has been very good will continue to work with them."
"How can people use a service from such untrustworthy company?"
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Carl Baber
2 weeks ago
Have had great work with Brennan. Has done work at two different houses of mine and done fast efficient work. Price and quality has been very good will continue to work with them.
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Roy Cabrera
3 months ago
The bathroom lights in the master bedroom were completely out. I saw a GFCI in the bathroom and was not tripped. I flipped the switch in the master bedroom and lights came on so I presumed there was no GFCI in this room . The home owner's club was notified and they sent Brennan Heating & Air Conditioning instead of an electrician. The tech in a minute found another GFCI in the adjacent bedroom and found it tripped. He flipped it and the lights came on and he offered to open and inspect the GFCI saying he might find something wrong with it. I declined. He called his office and the bill came to $174.11 including tax. Tell me consumers, isn't this a ridiculously unreasonable charge?
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Joshua Marthaller
2 weeks ago
Great company who offers so many options to customers. Whether HVAC, Electrical, or Water Heaters Brennan is a great place to call when getting an idea of getting help with a project no matter how big or small.
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Chris Milham
6 months ago
I chose BRENNAN HEATING & AIR COND LLC to install a new gas furnace and a new gas water heater. A team of 2 showed up to my house and had the job done in about 3 hours. The quality of the install was very good, and I could tell that these guys knew what they were doing and had been trained well. Very happy with the bid I got, and the service that was performed. Would highly recommend!
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David Canon
a week ago
We had Brennan Heating & Air Conditioning out to our house this past Friday. Eric and martin installed our new furnace for us. I needed to write a review because the job they did was top notch its what i would call a very clean install. And i think Eric and Martin went above and beyond with the job they did for us. Thank you Brennan Heating & Air Conditioning,
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William Hollerich
2 months ago
Brennan Heating and Air Conditioning installed a central A/C system for my home in May 2016 and I was extremely impressed with their work. They helpfully identified one oversight made by the original contractor in the installation of the heating system in my 2 year old home which had the effect of severely limiting the amount of heat reaching the heating vent in the kitchen of my home. I had never noticed it before but when they pointed it out to me, I noticed immediately that they were right and I got it fixed. The Lennox A/C system they installed (the real reason they were at my home that day) works great and I am very pleased!
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Michelle Pendleton
2 weeks ago
Brennan is a great company. from the friendly and very helpful staff in the office to the well trained and very knowledgeable technicians in the field. I would recommend them to anyone.
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Mark Hartman
a year ago
I've upgraded Brennan to three stars. I was not pleased with the install work and I was actually the one who discovered they incorrectly set the mini-dip pins on the control board for a single-stage furnace, rather than a high-efficiency two-stage model. They also, I found out recently, switched the exterior air exhaust and intake, which explains why my siding has been damaged...when the furnace runs it's constantly blowing warm, wet condensate right back toward my house. But I must say I was quite impressed today when they came out and did a great job fixing the swapped exhaust/intake pipes. No charge, and we're talking six years after the original, that's pretty darn good. Just make sure the install team isn't rushing through the job like the crew who tackled mine...
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