Aydin L.04/09/18Our retail store in Corona was 82 degrees and getting hotter. Cornerstone Air came out within 40 minutes, he didn't mind figuring out how to get on the roof with me, he demonstrated the faulty... More
Ms. M.09/02/19This company is by far, the best ac/heating company I have ever used. To finally have a company that is honest and reliable in this day and age, is wonderful. I highly recommend them! More
Leslie A.12/31/20Great company! Always pleased with their work, and very nice family owned business. I recommend. More
Amanda B.10/28/15I have had the pleasure of working with Mark for some time now (i'm in property management, so we have many rentals that report AC/Heating issues). It is refreshing to say that I can always rely... More
Melissa B.10/27/17Mark Salazar helped us with our air today. We called him and explained the problem and he was at our house within an hour! On a Friday! He was timely, professional, friendly, and very... More