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Our Latest Reviews


With over 60 years experience in the trade Guthrie and Sons have become masters in communicating and over delivering for our customers.  Our family now going on three generations has installed, serviced, and designed thousands of comfort systems through out San Diego and Temecula Valley.  We offer unsurpassed industry knowledge and design  consultations that is only followed by superior system engineering, installation and customer service practices few can hold a candle to.  We have spent countless hours training our employees on what we call “The Guthrie Way” and have steered them away from any bad industry practices that seem to taint our industry. 

Whether you need a furnace or air conditioner repaired, serviced, maintained or replaced, you can be assured that our highly trained and nationally recognized team will not let you down. 

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Whether you are building a new home or ready to upgrade to a new, modern, environmentally-friendly, and more efficient heating system, we offer a capacity, efficiency, and price that will suit your needs.

Air Conditioning

Before it becomes time to turn on the air conditioner for the season, it is a good idea to have your system checked out by one of our maintenance experts.

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The main advantages of mini splits are their small size and flexibility for zoning or heating and cooling individual rooms or spaces.

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When San Diego heating and cooling consumers want to improve home health, energy efficiency, and comfort, they turn to Guthrie & Sons products and systems.

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Home Energy Audits

Looking For A Complete Home Enegy Audit?  You’ve Come To The Right Place.

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