Residents of Seattle, WA and surrounding 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 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 the Emerald City.