Seattle's Best Heating, Cooling and Electrical Company Since 1987


Brennan Team PhotoResidents of Seattle, WA and the surrounding Puget Sound areas have relied on the reliable services provided by Brennan Heating & Air Conditioning for more than 30 years. Our commitment to ensuring our customers’ comfort throughout the year has garnered the respect and loyalty of residents all around Seattle and the Puget Sound area. We believe in offering our Seattle neighbors the best in customer service by hiring only the best technicians who have completed intensive training and believe in 100% customer satisfaction. We discovered that this is the perfect formula to success in Puget Sound and all of the Emerald City.

When our loyal customers call us for furnace repair on a cold winter’s night, we know they need our help right away; not next week. We always do our best to send a professional, friendly, and knowledgeable technician out to help as soon as possible, which means the same day or night when it comes to emergency heating and cooling repair. Our entire energy consultant team takes the time and care to listen to each of our customers’ unique interests, needs, and circumstances to make sure we deliver the perfect HVAC system needed for cool and warm comfort every day of the year. With Brennan, you know you are choosing a quality contractor.

Brennan Treats Customers Like Family and Supports the Community

Northwest Harvest Partnership Meals Thermometer | Brennan Heating & Air Conditioning | WashingtonBetween our in-house customer service representatives and our on-site technicians, we make it our goal to provide the best service in the heating and cooling business. Our core values of honesty, integrity, and service guide us in our mission to provide the very best to you and the local community throughout Seattle and all of Puget Sound.

Here are just a few reasons why you should choose Brennan:

Northwest Harvest Partnership | Brennan Heating & Air Conditioning | Washington

  • Consistent, sincere and concerned communication
  • Angie’s List Super Service Award Winner for 13 years in a row
  • Accredited member of the Better Business Bureau, A+ Rated
  • Community involvement, including a partnership with Northwest Harvest that has yielded more than 198,500 meals to relieve hunger throughout Washington State

Let Brennan Keep You Comfortable in Your Seattle Home in the Puget Sound Area

Our AC installation, furnace installation, and 24/7 repair services alone have instilled local customer confidence and loyalty.

Our long list of services throughout Seattle and Puget Sound includes:

24-hour Emergency Service

  • 24/7 AC Repair Service, when you need it the most
  • Professional AC Installation and Replacement
  • Routine AC Maintenance to keep your unit running smoothly
  • 24-Hour Emergency Heating and Furnace Repair
  • Furnace Installation and Replacement
  • Heat Pump and Boiler Installation
  • Heating System Preventative Maintenance
  • Water Heater Service and Installation
  • All Types of Residential Electrical Work
  • Financing, with approved credit
  • Free Energy Consultations, analysis and advice on how to improve your energy consumption

We service, install, and carry a dependable line of products including furnaces, air conditioners, heat pumps, boilers, hydronic systems, indoor air quality products, gas water heaters, tankless water heaters, thermostats, and smart controls. As a premier Lennox Dealer, we only carry the most reliable products that will keep your home comfortable for years to come!

We Are Your Partners for All Your Seattle and Puget Sound Heating and Cooling Needs!

Ready to utilize Seattle’s finest heating, AC, and electrical service? We’re here for you! Brennan Heating & Air Conditioning serves King, Snohomish, Pierce, Lewis, Thurston, Mason and Kitsap counties in the Puget Sound area. Get in touch with us, we’ll improve your home comfort!

Contact Us Today