Trusted Home Services Across the Puget Sound Since 1987
HVAC Contractor in Renton, WA
Brennan Heating & Air Conditioning is a reliable, customer-driven HVAC contractor in Renton, WA. Come to us for consistent and sincere workmanship that prioritizes your comfort and satisfaction. We’re accredited by the Better Business Bureau and have won the Angi Super Service Award for 13 years in a row.
Our highly trained and certified technicians will inspect your heating and cooling systems and offer repair, replacement, or air duct cleaning services. We’re an expert HVAC company that carries premier Lennox products and offers free energy consultations, as well as expert plumbing services.
Energy Consultation
Repair: Renton HVAC Contractor
When you depend on your HVAC systems to keep you comfortable all year long, they can occasionally run into efficiency and safety concerns. Air conditioners can struggle with damaged evaporator coils, compromised condensate lines, and refrigerant leaks. Your furnace may not be able to produce as much heating with a dirty flame sensor, gas leak, or faulty blower motor.
Your HVAC systems may also make loud sounds like banging or squealing or emit burning or musty odors. Even the smallest heating and cooling issue like a broken belt or frayed wire, can turn into a major problem. Call for repairs fast to nip the issue in the bud early and keep your service costs low.
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.
Installation: Superior HVAC Company
No matter how much maintenance you schedule, your furnace, air conditioner, or heat pump will eventually break down and need replacing. These systems will last 10 to 15 years on average before they’ll start requiring hefty repairs. Attempting to maximize their lifespan will often leave you with inconsistent temperatures in the home and a lack of indoor comfort.
Older systems may also have safety issues if they develop carbon monoxide leaks or electrical problems. Rather than take on the burden of increased repair bills and monthly utility costs, invest in a new high-efficiency heating or cooling system.
Check out these fantastic benefits of installing a modern HVAC system:
- New warranty
- Exceptional energy efficiency
- Improved indoor comfort
- Healthier air quality
- Quieter functioning
Energy Consultation
Maintenance: Heating and Cooling Company
Annual tune-ups offer endless benefits to your HVAC systems’ lifespans and usefulness. During these preventative services, a trained technician will inspect and wipe down every major component inside your furnace and air conditioner.
They’ll search for faulty parts, lubricate key components, and ensure all essential safety features are in great condition. A tune-up guarantees your peace of mind by optimizing your system’s reliability. You won’t have to worry about a sudden furnace breakdown or a drop in heating this winter.
Choose Brennan Heating & Air Conditioning as your family’s HVAC contractor in Renton.
From food banks to foster care, Brennan is proud to give back to the communities that trust us with their comfort.
