Brennan Heating & Air COND

We provide expert heating system installations, including furnaces, heat pumps, and boilers. Our team ensures energy-efficient solutions tailored to your home's needs, with free consultations and financing options. Backed by factory-trained technicians and extended warranties, we deliver reliable comfort for Western Washington winters.

Our NATE-certified technicians offer fast, professional AC repairs for cooling systems. We diagnose issues like refrigerant leaks, electrical problems, and airflow inefficiencies, using high-quality parts and transparent pricing. Emergency services ensure your home stays cool during Seattle summers with minimal disruption.

From panel upgrades to EV charger installations, our licensed electricians handle residential electrical needs safely and efficiently. We prioritize code compliance and safety, offering surge protection, lighting upgrades, and standby generators to protect your home and power critical systems during outages.

We specialize in water heater installations, leak detection, drain cleaning, and fixture upgrades. Our plumbers use advanced tools to resolve clogs, leaks, and inefficiencies, preventing costly damage. With upfront pricing and 24/7 emergency availability, we ensure reliable plumbing performance year-round.

We improve indoor air quality with HEPA filters, air purifiers, and duct sealing. Our solutions reduce allergens, pollutants, and humidity imbalances, benefiting homes with respiratory-sensitive occupants. Aeroseal technology and whole-house systems ensure cleaner, healthier air circulation in Western Washington homes.

We serve King, Snohomish, Pierce, Kitsap, and Mason counties, including Seattle, Bellevue, Tacoma, and surrounding communities.

Yes, we provide 24/7 emergency HVAC, plumbing, and electrical services with same-day and weekend appointment options.

Yes, we offer approved credit financing programs for HVAC, electrical, and plumbing upgrades to qualified customers.

Our team includes NATE-certified HVAC technicians, licensed electricians, and factory-trained specialists for brands like Lennox and Carrier.

Yes, we offer free energy consultations to identify savings opportunities and recommend energy-efficient system upgrades.

We purchased a furnace and air conditioning unit from this company through Costco, so we thought it would be a good company to deal with. My previously warm in winter master bedroom now requires a separate heater, and I still have to use the loud portable air conditioner in my Master which is the reason I purchased central air, so I wouldn't need that thing. Brennan doesn't have a solution for this other than, Yea, that happens sometimes. WHAT?! Why didn't you install a furnace and air conditioning system that would work in our home? Thank you for responding. please let me know who I should contact. I would very much like to discuss.

I've been communicating with them for 9 months trying to get central air conditioning through Costco. If I don't email and call them multiple times, all communication comes to a stop. I'm even waiting for a callback now for the past two months of how they will get the system to fit. My pregnant wife was mad. I've gone with another company, All Climate, and got central air conditioning in under 2 months now, and never needed to call or email multiple times. My wife and I are happy and cool now. I know others had good experiences with Brennan, but I hope they can do better!

Forget customer service after they get your signature and you're down payment. What they don't tell you upon signing is that YOU ARE responsible for scheduling both the electrical and mechanical inspections. They sent the lone installer out in blinding rain and 35 mph wind gusts where he had to climb up a ladder 30 feet. They DEMAND payment BEFORE the inspections are completed. They are patheticely slow to respond, the office contact is snotty, and follow up is non existent.

The Brennan Heating and AC team was composed of 4 workers: Installer, HVAC technician, electrician, and a helper. They took out the 30 years old electric air handler and heat pump and installed a new Lennox system. One challenge they had was to connect the existing duct work to the new system. They struggled but persevered. I have to commend the installer for how he handled the frustrating task of connecting the unit.

The electrician ensured we were up to code by installing an outlet accessible to the heat pump. The technician informed me that the hole through the foundation for the pipes from the heat pump to the air handler was not large enough to accommodate foam insulation. But it wasn't a significant heat loss. The helper was attentive to the other's needs. Standing by and stepping in to assist when needed.

They worked as a coordinated team which was satisfying to watch. They cleaned up the debris and scraps and took the old dirty system away. Scheduled in April is an air duct cleaning. The system is quiet and heating well. The COSTCO cash card coming in a couple weeks is a plus.