Testimonials

Clayton at Cornerstone did a wonderful job getting my air conditioning units clean, and up and running again. He was honest, and let me know that my main problem was the setting on the “smart thermostat” ecobee was not correct. He also did an excellent job explaining to me everything I needed to know about my 2 units, and their current working condition. In today’s world where big contractor companies dominate the market, it’s hard to find people that you can reliably trust to get quality work and honest work prices. I give this company my highest recommendation. I would suggest you give them a try.

We had such a great experience with Cornerstone Air today! We had the opportunity to meet Dak Jones, the founder. He was very friendly, professional, on time and thorough. We also admired the fact that he was very honest with us. We are in the process of selling our home in Frisco and we just wanted to have a peace of mind that everything was operating properly and Dak definitely put our minds at ease! We will definitely use Cornerstone Air again for our new home! Thank you Dak and to his team!

Had a great experience with Cornerstone Air! They were friendly, upfront, and answered all of my questions thoroughly. Out of the 5 quotes I got their, pricing was very fair, and the quality of work was excellent. It’s always nice to support a local business that truly values great customer service. Highly recommend!

Thank you so much for coming out so quickly and getting our AC going before the weekend. We appreciate it. Great service, great price.

Cornerstone was quick to respond and diagnose the issue. With it being the hottest day of the year and our A/C broken, I could not have been more thankful. Clayton was knowledgeable and professional and I will definitely call them in the future when the need arises.

We have been so pleased with cornerstone air. Owners Dak and Clayton are knowledgeable, professional and seek the best for their clients. We will be calling them again when need arises!

Awesome customer service and Great people!

Great customer service

Cornerstone will be the only HVAC company I use at our home and at our commercial property. They check all the boxes-Excellent Communication; Reliable; Exceptionally knowledgeable in all aspects of HVAC!!!

Cornerstone Air came to check the condition of my ac unit and I couldn’t be more happier with their service. Clayton was upfront and explained the process to me before he started any work. Once complete, he walked me through the condition of my unit and what services he performed. Their pricing was excellent and I would recommend them to anyone.