Cornerstone Air LLC
Licensed HVAC contractor in Plano, Texas
Cornerstone Air LLC holds TDLR licence TACLA00108037E, active, licensed since 28 Oct 2020, rated 5.0 from 84 Google reviews.
Report card
- Licence activeTDLR #TACLA00108037E, class AE. Issued 28 Oct 2020, expires 28 Oct 2027.
- Licensed 6 yrsSince 28 Oct 2020.
Checked against the Texas Department of Licensing and Regulation (TDLR) register on 4 Nov 2026.
Google reviews
5.0(84 reviews)Dave W★★★★★ 3 months agoView on Google
Fantastic service!! Our A/C went out in the middle of a heat wave...heat index over 100F! We called Cornerstone Air and requested an emergency call from their answering service. Clayton called us back within minutes and arrived at the house less than two hours later. He assessed the system, found the fault, and fixed it in about 15 minutes. A great experience from start to finish without having to fight our way …
Eugene Merlinsky★★★★★ 8 months agoView on Google
Great experience from start to finish. They were able to come out the same day to unclog my main AC drain line, which I really appreciated. The technician was friendly, knowledgeable, and explained everything clearly. The work was done quickly and the system is running perfectly again. Very satisfied with the service and highly recommend them.
Ron Yates★★★★★ 3 months agoView on Google
Worked with Dak today. Serviced 4 units. Did troubleshooting on a 5 ton unit. Instead of replacement, found a problem that will be pretty easy to fix and not very expensive. Will correct the issue instead of buying a new unit. Not everyone is as thoughtful as Cornerstone and Dak. Much appreciated! They’re honest and get the job done. That’s why I use them. Would recommend that you should consider doing the same. Ron …
B Chandler★★★★★ 5 months agoView on Google
I called Cornerstone Air on a Sunday evening when my A/C unit went down and Dak was quick to respond with a callback. We discussed the issue and he scheduled a technician for 8am the following morning. Clayton was onsite by 8am and quickly diagnosed the problem and headed to the parts house. Upon his return and installation of the new fan motor he also found the motor start capacitor was the wrong size. This capacito…
Jlynmiller★★★★★ 5 months agoView on Google
As a widow who’s never had to manage home maintenance, I was concerned about being taken advantage of. So when my HVAC system leaked a good amount of liquid thru the ceiling duct onto my hallway floor, I knew I had to find someone. After Cornerstone was recommended, I reached out to Mr Terry with my concerns, and he promptly replied setting up an appointment. I had no need to worry because Mr Terry was fabulous. He l…
Read all 84 reviews on Google Reviews and photos from Google, 4 Nov 2026.
Why it ranks #19 of 119 HVAC contractors in Plano
Score 64.9 / 100. Claiming this listing or using Theo never changes it. How we rank
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