Billy Morgan of Cornerstone guided me through the replacement of an old hvac unit in 2017 and I am very satisfied with the new unit and the support that I have received to date. Billys level of customer service and support is bar none - he even came out recently and helped unclog several drain lines for us even though semi-retired.
I gave my brother a referral to Cornerstone Heating & Air, LLC when his A/C stopped working in July of 2020. I have a friend who used this company for the installation of a new A/C unit and they were pleased. My brother used Cornerstone Heating & Air, LLC, and said he was very happy with their services. He said they were nice, figured out the issue quickly, and they were reasonable.