Trusted Home Services Across the Puget Sound Since 1987
HVAC Contractor in Black Diamond
Many property owners turn to Brennan Heating & Air Conditioning when they need a professional and reliable HVAC contractor in Black Diamond, WA. With over 30 years of experience, we bring extensive knowledge and skill to the table. We also have a reputation for showing up on time and doing high-quality work.
To help you stay comfortable, we can install a top-of-the-line system for your home and handle maintenance requirements. Ready to learn more? Contact us today!
Energy Consultation
Heating and Cooling Company Repairs
When a system is running with mechanical or electrical problems, it often shows early warning signs. You may notice that one room stays hot even when you lower the thermostat. In addition, you’ll likely hear strange noises coming from the system.
These problems can point to blocked vents, dirty filters, or something more serious. The best way to save your system from premature failure is to take action sooner. A quick fix by our heating and cooling company might resolve your HVAC-related concerns in Black Diamond.
Don’t wait to address unusual system behavior:
- Short cycling
- Emitting odd smells
- Producing no heat or cool air
- Elevating energy bills
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.
New Climate Control Installation Services
A new HVAC system from a professional heating and cooling company is a worthwhile investment. Since an old system can greatly compromise indoor comfort and efficiency, you need a replacement that suits your home environment and needs. Consider upgrading if your current system has been in use for almost 10 years.
A properly installed replacement will be effective and reliable. If you choose a high-efficiency AC system or furnace, you can maintain pleasant indoor conditions without significantly increasing energy costs. Modern technology facilitates precise temperature control and consistent system performance.
Energy Consultation
Black Diamond HVAC Contractor Maintenance
Let our HVAC company assist you with regular maintenance to prevent your system from becoming problematic. Professional tune-ups make a difference by allowing vital parts to function optimally. This is possible because tune-ups address common problems, such as poor airflow. Furthermore, routine maintenance helps your system last longer.
Well-maintained furnaces and air conditioners suffer less from general wear and tear. They also heat and cool rooms with greater efficiency. That’s why a good maintenance plan might also help you lower your carbon footprint in the long run. Other common benefits include quieter operation, improved indoor air quality, and increased peace of mind.
When your climate control system stops running properly, you can count on our NATE-certified technicians to fix it quickly. We’re a Lennox Premier Dealer with 13 Angi Super Service Awards. Plus, our heating and cooling company is a trusted provider of tailored HVAC solutions with decades of experience.
Call Brennan Heating & Air Conditioning today if you’re searching for a reputable HVAC contractor in Black Diamond.
From food banks to foster care, Brennan is proud to give back to the communities that trust us with their comfort.
