• Seattle heating


    Reliable, professional, award winning are just a few words that describe us.

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  • Seattle air conditioning


    Our Seattle energy consultants look forward to meeting with you to discuss how we might meet your heating and cooling needs.

  • Seattle heating and air conditioning contractor


    To be the leader in the industry, we understand that every homeowner and application is unique, and we must have a wide array of options to completely satisfy each customer's needs.

Why Brennan?

Award-Winning Seattle Heating and Air Conditioning Contractor

For seven years in a row, Puget Sound Energy has honored Brennan Heating & Air Conditioning for our commitment to offering energy efficiency and energy-saving solutions for homeowners in the Greater Seattle Area.

Industry-Trained and Certified

Since 1987, homeowners have trusted Brennan Heating to provide them with the best in “energy-smart” products. Our industry-trained and certified technicians are dedicated to helping our customers conserve energy and reduce their heating and cooling costs.

Highest Quality Installation

We have a full sheet metal shop on site to accommodate anything each unique installation requires. Our knowledgeable representatives know exactly what your home needs, and will keep you informed every step of the way to make sure the finished product meets your needs.