Have any feedback for us? We'd love to hear it! Call us at (925) 326-6232 and let us know how we are doing.
We had a service call today and Certified, as always, sent a friendly, competent, thorough technician to address our issue. Diego identified the problem quickly and explained it all to me in detail. And he was just as kind as could be. I recommend this company to anyone who needs heating/ac work. We are loyal customers for sure.
