Brennan Heating and Air Conditioning provides Seattle and Puget Sound–area customers with the best in “energy-smart” heating and air conditioning systems from several of the world’s leading manufacturers, including Lennox, Carrier, Rinnai, Mitsubishi, and Honeywell. Brennan’s systems use advanced technologies and insulation during the furnace installation process to reduce the noise that older furnace systems can create. Our certified heating and air conditioning technicians service all heating and cooling equipment and install the newest products available including: 

Natural Gas Advantages

Natural gas is the fuel of choice for most homeowners, which is why we offer a variety of gas-powered heating and cooling products. It's a clean, affordable, safe and efficient energy choice.

Switching to natural gas means lower energy bills and increased value when you sell your house, plus many other benefits.

Click here for more information on natural gas advantages and how it can save you money.