Brennan Heating & Air Conditioning, Seattle

Brennan Heating & Air Conditioning has gained quite a bit of attention over the years. The staff's expertise in installing, repairing, and maintaining residential energy-efficient air systems earned Puget Sound Energy's Energy Efficiency Action Award six times. Lennox Industries—an international heating and cooling manufacturer—bestowed the air-system gurus with not only a Dave Lennox Award in 2011, but also multiple Lennox Circle of Excellence and National Centurion Awards between 2005 and 2012.

This level of success stems from Brennan Heating & Air Conditioning's dedicated staff of certified technicians. Additionally, a number of the senior technicians draw from more than 15 years of industry experience, enabling them to service older systems that still run on thunder bolts.