Trusted Home Services Across the Puget Sound Since 1987
HVAC Contractor in SeaTac, WA
When you need a trusted HVAC contractor in SeaTac, WA, we’re ready to serve you at Brennan Heating & Air Conditioning. Investing in quality HVAC services goes a long way toward ensuring your comfort throughout the year. Whether you need maintenance, repairs, or a new system entirely, we can help at Brennan Heating & Air Conditioning.
We’ve been the local HVAC company residents have turned to since 1987. We offer quality workmanship for affordable prices. We have experienced and trained technicians ready to offer the services you need for a comfortable and energy-efficient home.
Energy Consultation
Heating and Cooling Repairs
At the first sign of trouble with your furnace or AC, you need to call an HVAC company for repair. With unbearable temperatures outside, finding your HVAC system won’t turn on is every homeowner’s nightmare. However, HVAC issues can be more difficult to notice at first if you’re not paying attention. You should never ignore unusual sounds or smells from your furnace or AC.
Other potential warning signs include increased energy bills, decreased performance, or continuous cycling. This is when you need a qualified heating and cooling company to get involved. Call us right away to stop a potentially minor fix from turning into a major repair.
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.
Expert HVAC Company for Replacement
No HVAC system lasts forever. In fact, once it gets past the 10-year mark, it may not be wise to invest in major repairs. A replacement HVAC system can offer many benefits for homeowners. In addition to getting the reliable performance you need, it can add to your property value.
Newer systems prioritize energy efficiency and offer modern technology such as remote app control. We will carefully assess your space and determine the best system for your budget. We offer options for financing with approved credit.
Some benefits of calling a heating and cooling company for replacement include:
- Increased energy efficiency
- Improved reliability
- Modern controls
- Avoid major repairs
- Better indoor air quality
Energy Consultation
HVAC Contractor in SeaTac: Maintenance
Calling an HVAC company for maintenance is the best way to ensure your system is ready when you need it. Your heating and cooling system is subject to a great deal of wear and tear over time. By investing in a routine maintenance check, you can extend its lifespan and avoid major repairs.
You can also be sure your unit is running as efficiently as possible, saving you on your energy bills. We will perform a thorough inspection of your heating or cooling unit to check for worn parts. We will also remove any dust and debris threatening to clog your system. Simple adjustments, such as changing a filter, can save you from major problems down the line.
Make sure you call Brennan Heating & Air Conditioning first the next time you need an experienced HVAC contractor in SeaTac.
From food banks to foster care, Brennan is proud to give back to the communities that trust us with their comfort.
