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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.


Guthrie and Sons is a San Diego based, family owned and operated company offering three working generations of experience in the trade.

We are fully licensed, insured, and bonded to make sure you and your investments are always protected while we are in your home.

We have installed thousands of comfort systems throughout San Diego, so you can rest assured that you are dealing with a competent company to deliver you the best system and service money can buy.

“Take Care of Your Employees, and They Will, In Return, Take Care of Your Customers” and “Do What Is Right at All Costs.” Together, these philosophies serve as the moral compass of our business.

We mandate training meetings and educational courses for all our employees year-round, ensuring they are certified and competent to be able to succeed at their job.

We are highly rated on all social media outlets such as Yelp, Angie’s List, and Google (among many others). We also hold an A+ business rating with the BBB.

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