Trusted Home Services Across the Puget Sound Since 1987
HVAC Contractor in Sammamish, WA
Whenever you need services from a heating and cooling company in Sammamish, WA, Brennan Heating & Air Conditioning can provide them. We always strive for 100% complete customer satisfaction on each job.
We work by core values that include integrity and honesty, and we’re involved with our community through supporting local organizations. As your HVAC contractor, we can service both your furnace and air conditioner.
Energy Consultation
Heating and Cooling Company: Repairs
A normal heating or cooling cycle should run for 15-20 minutes. However, there may come times when your furnace or AC operates for a few minutes and then shuts off. This phenomenon is short cycling. With this, your home won’t feel as comfortable as it should because the HVAC system won’t reach the thermostat setting before turning off. As a top HVAC contractor in Sammamish, we can inspect your system to determine the cause and perform the repair.
Don’t take water leaks for granted. Not only can they affect how your system runs, but the water can also cause the growth of mold and mildew if you leave it standing. If mold spores get inside your HVAC system, they will spread throughout your home, and you’ll become sick when you breathe them in. Our technicians can take care of your water leak issues with prompt repair service.
Service That Speaks for Itself
See Why Western Washington Homeowners Love Brennan
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“Detail-oriented and their technicians spend time teaching you the system. I also can’t believe they also came back the next day to caulk a tiny hole they made. You get quality with Brennan.”- Marcin N.
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“The install team was great. They were all experienced and really enjoyed their jobs, and it showed. I love our new Carrier 38MURA hvac system already, and it's not even hot out yet.”- Melissa R.
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“Bryan & Michael arrived early as I requested and worked hard to clean the furnace vents, returns, and ductwork, including the dryer vent. Our daughter had recently used Brennan & recommended the company. I am delighted with the results.”- Janie H.
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“The service was extremely professional, courteous, respectful, and knowledgeable. We loved Dakota & Brian!”- Lloyd N.
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“Excellent and efficient service. Brayan Rodriguez and Giovanni did a great job. Brennan will be my go to for services needed”- Diane V.
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“The services provided by the Brennan staff were outstanding. Sergio & James were on time, completely explained the 5 W's before starting, they were efficient, cleaned up as they worked, explained how each part of the system functioned.”- Steve S.
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“I had Brennan come today to clean my air ducts. Since this was the first time having it done, it was reassuring to know it’s a pretty simple & fast process, and totally affordable. You're always in good hands with them.”- Sandy M.
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“Our experience from estimate to installation was outstanding! Their price and quality of installation were a great deal. I highly recommend them for any Water Heater, AC, or Heating needs!”- Douglas D.
Service You Can Rely On. People You Can Trust.
A member of our team will be in touch shortly to confirm your contact details or address questions you may have.
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Smarter, Safer, & More EfficientFrom high-efficiency HVAC installs to LED lighting upgrades and surge protection, we’re here to improve the way your home feels—and functions—year-round.
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Award-Winning CareMulti-year Angie’s List Super Service Award winner with an A+ BBB rating, Brennan is Seattle’s trusted partner for top-tier heating, cooling, and electrical services.
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Integrity Meets InnovationFrom certified energy consultants to licensed electricians, our team brings you forward-thinking solutions backed by time-tested values of honesty, reliability, and expert care.
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Trusted Since 1987With decades of experience and thousands of satisfied customers, Brennan delivers worry-free heating, cooling, and electrical solutions with service you can count on.
Ways To Save With Brennan
From flexible financing to energy-efficient upgrades—we make comfort more affordable.
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Flexible FinancingDon’t let budget concerns delay your comfort. We offer trusted financing options to help you move forward with confidence. -
Current SpecialsWhether it’s seasonal savings or limited-time discounts, we’ve always got a way to help you save more.
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Energy RebatesEligible HVAC upgrades could qualify for big rebates under the Inflation Reduction Act. Let’s help you save while going green.
Sammamish’s HVAC Contractor for Installations
As you use your heating and air units over the years, they’ll accumulate wear and tear. In time, this wear and tear could cause issues in the form of inefficiency or other performance concerns. If you’ve had to set up too many repair appointments recently to address constant system issues, the better option might be to replace your HVAC instead.
Brennan Heating & Air Conditioning is a top heating and cooling company in Sammamish that can install a new system if you’re facing the following:
- System too old
- Continuous coolant or gas leaks
- Energy bills too high
- HVAC system keeps breaking down
Energy Consultation
Maintenance Service Does Matter
When an HVAC company like ours handles your yearly tune-ups, you’re doing your part to ensure your system continues to serve you well. During a maintenance appointment, your system will undergo a rigorous inspection. Any issues we find, we’ll address quickly so they don’t become problems later on.
The best times for our technicians to check your cooling and heating units are outside of the busy seasons: summer and winter. Professionals are in high demand during these times of the year. Set up your AC tune-up sometime in the spring. To prepare for the cold winters, have our team inspect your furnace in the fall.
We’re a top heating and cooling company in Sammamish, so contact Brennan Heating & Air Conditioning today for any of your HVAC system needs.
From food banks to foster care, Brennan is proud to give back to the communities that trust us with their comfort.
