Brennan Heating, Air Conditioning, & Electric

HVAC contractor
4.6(2,240 reviews)
4601 S 134th Pl, Seattle, WA 98168
Brennan Heating, Air Conditioning, & Electric

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About Brennan Heating, Air Conditioning, & Electric

Brennan Heating, Air Conditioning, Plumbing, and Electrical has anchored Western Washington home comfort since 1987. With a 4.6-star rating drawn from 2,241 reviews, the company holds an A+ Better Business Bureau rating and has collected 13 Angie's List Super Service Awards. Technicians serve homeowners across Seattle, Bellevue, Kirkland, Renton, and the broader Puget Sound region, handling HVAC, plumbing, and electrical work from a licensed, fully insured operation. The company operates standard hours Monday through Friday and offers same-day and weekend emergency appointments, including 24/7 support for heating failures during the coldest stretches of Pacific Northwest winters.

The company's status as a Lennox Dealer gives homeowners access to a full line of ENERGY STAR-rated furnaces, air conditioners, and heat pumps backed by manufacturer warranties. Brennan's Aeroseal duct sealing service addresses a common source of energy loss in older Western Washington homes, while the free energy consultation program helps homeowners map practical upgrades before signing any contracts. A maintenance membership, flexible financing, and federal Inflation Reduction Act rebate navigation further lower upfront costs for high-efficiency equipment, supported by a satisfaction guarantee covering both products and workmanship.

Three separate reviewer accounts name technicians who arrived prepared and communicated clearly. Technician Daniel completed a furnace tune-up at Norman Zyskowski's home, identifying a worn component, explaining the issue with photographs, and completing the replacement in a single visit. On one of the coldest days recorded in the region, technician Ibs responded same-day to a complete furnace failure for reviewer C B, diagnosing the problem and restoring heat before evening. The company's emphasis on clear pricing and thorough explanations appears consistently across positive reviews, with multiple homeowners noting that technicians took time to teach them about system operation before leaving the property.

What Customers Say

Positive reviews cite technician punctuality, clear communication, and thorough diagnostics. Daniel and Ibs receive specific mentions for professionalism and same-day responsiveness. Negative reviews focus on pricing concerns, with one reviewer raising questions about installation quality on equipment installed more than a decade ago.

4.6 · 2,240 reviews
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Working Hours

SundayClosed
Monday8 AM–5 PM
Tuesday8 AM–5 PM
Wednesday8 AM–5 PM
ThursdayToday8 AM–5 PM
Friday8 AM–5 PM
SaturdayClosed

Services

Heat Pump Installation & Repair

Full heat pump services including new installation, same-day repair, and maintenance for efficient electric heating and cooling across Western Washington homes.

Furnace & Boiler Services

Equipment inspection, tune-ups, and repair for gas furnaces and boilers, including same-day emergency response during cold weather events.

Central AC Installation & Repair

New air conditioner installation and repair services from a Lennox dealer, with maintenance plans available to extend system lifespan.

Electrical Panel & Generator Services

Electrical panel upgrades, standby generator installation, and EV charger wiring to support modern households and backup power needs.

Plumbing & Water Heater Services

Water heater installation, leak detection, drain cleaning, and piping services covering both traditional and tankless water heater systems.

Air Quality & Duct Sealing

Aeroseal duct sealing, air duct cleaning, humidifiers, and whole-home air purifiers to address Western Washington indoor air quality concerns.

Frequently Asked Questions