Apparently to my chagrin the flux capacitor in Back to the Future is not a real device. A capacitor on your A/C at home is as real as it gets; especially when it goes out or starts to malfunction. I called Cornerstone based on a family members recommendation for some old fashion troubleshooting when my unit cut out the other day. My appointment was on Wednesday; but Mr. Morgan showed up the same day! He listened to my recap of the problem and spent some time checking it over. All was well and my A/C was in good condition. As summer winds down into the mid 90's; you might as well spend some $$'s to make sure its gonna keep you cool even thru fall where it might just be 85 degrees. Those dollars I didn't spend however because he refused to charge me for the checkup. I know Cornerstone will be on my speed dial for all things A/C in the future. Thanks for the prompt, friendly, and professional service! read more

Billy is so good that when I called him recently (September 2020) for service as a past customer, he told me he appreciated the offer but could not take on any new service requests. He did not put me on a wait list or even suggest it, basically the sense I got was I should move on and find another service provider. So either he is busy working on new construction installations with his current clients or he is about to hang it up. Maybe both, as he's hinted at closing shop before. He does respond to texts, so maybe if you really want him to work for you, get the latest status from him directly. While I'm without AC, I'm still giving him 5 stars for his past work and out of respect. Just want you, the consumer, to know he is no longer accepting new service requests. read more

Billy stopped by the day after I called him to check out my unit. He provided me with 10 different quotes and walked me through each option. Once I decided on the best one for me, he came by with his team that same week and installed the new unit in ONE day. He also put in fans in my bathroom. The next week I got a notification from the utility company that my energy usage went down 50%. They send me week to week comparisons, so I was shocked. He then texted to check in to see how I liked it, I said I loved it but it was a bit louder. He stopped by the next day and made it so much quieter. I highly highly recommend this business. read more

Great service from a knowledgeable, courteous guy. I'd had refrigerant added last summer by a different company, and they recommended that I should replace the system entirely fairly soon. Now, ten months later, I wanted to get a second opinion and see how the refrigerant was holding out. Billy inspected the refrigerant level and added a little bit, but overall, I was in good shape. Very affordable visit, and I feel confident that my system isn't ready for replacement quite yet. read more

Cornerstone came out today because my AC wasn't cooling my house properly . Billy and Clayton where the guys to work on my unit and instead of up selling me a new unit the said mine had a few more seasons in it and only serviced it . I really appreciate there honesty . I would use them again in the future. read more

We hired Cornerstone to install a complete system in our cottage. They were prompt, professional and did great work. I would recommend them and will continue to use them in the future. read more

Cornerstone recently replaced both my AC/ Heating units. I am very please with the work. They were quick, clean, and professional. Most importantly Billy provided useful guidance as I chose the units but did not try to up sale me. Now after the fact they have followed up to make sure everything is working and in order. These guys are local and the real deal! Kind regards, Chris read more

I called Cornerstone on a Saturday morning because my AC was not cooling. They estimated an arrival time of between 10:00 and 11:00. Billy was here right around 10:00. He quickly diagnosed the problem and replaced the defective part. While he was here, I asked him to take a quick look at the system another company installed in 2014. Although there were several things wrong with the installation, there was nothing that seemed like it needed to be worked on immediately. At least now I know where to call to get good reliable service - something the installation company has been unable to provide. And, they've been here at least six times to 'correct' and 'fix' installation issues. A bit thank you to Cornerstone! read more

I called Cornerstone almost 3 weeks ago to have a diagnostic evaluation. They were supposed to come to my house within the week - they said they'd be here by Friday but hoped to come even sooner and would call me if they could squeeze me in sooner, well, I'm STILL WAITING........ I finally called Christianson Plumbing and AC and they are coming tomorrow. (Plus they charge $20 LESS for a diagnostic!) read more

I called Cornerstone to get a second opinion on whether or not i needed to replace my HVAC system. Fox had told me i needed a new unit as it was 10 years old and i had a leak (although the rep never did produce the leak detector) would need 6-8units of refrigerant and getting parts for my old unit was cost prohibitive so I might as well put that money towards a new unit and he would have his rep call to set an appt to give me a quote, which was roughly a $6000 event. Anyway, this is about how GREAT Cornerstone, not how bad Fox is. Mr. Morgan showed up and I explained the chain of events to which he responded, "I need to do some diagnostics so let's turn it on and see what we find." What he found was no clear leak, the shrader value did need to be replaced and he recommended we put some refrigerant in it and then watch for results over the next several months. He also suggested as long as he was here, he should check the other unit as well. He put in 3.5 pounds of refrigerant between the TWO units, blew out both drains and told me to call him if either pan took on water, but he doesn't think that will be the case. A check for under $400 was written and i have an AC company for life! Mr. Morgan was the consummate professional, not one time did he disparage the competition. He was honest, VERY good at explaining what he was doing and why and what to expect. AWESOME! read more

We have been using Cornerstone Heating/Air for years now because Billy Morgan is the most straightforward and honest person. How many times have you felt taken advantage of from service people? We have never felt this way with Cornerstone. We use them for both our home and our office. We highly recommend them. read more

This company is incredible! I called for an elderly friend whose unit stopped during the freezing weather. The Billy, the repairman, responded within several hours and worked on the unit until he got it running. He returned the next day to make additional repairs. My friend is now warm and comfortable. Honest! knowledgeable! reliable! read more

Can't say enough good things about this guy! Showed up when he promised, finished an installation someone else botched, redid significant portions the other guy messed up, went above and beyond expectations and still only charged his original estimate. The quality of his work was outstanding and he was very professional! If you need HVAC work in the Dripping Springs area, call this guy with confidence! read more

We had an air conditioner, which began leaking on our wooden floor. I called to make an appointment with Cornerstone to help. Billy Morgan said he was booked for the next three days. He heard the "fright" in my voice and came by that same night (after normal working hours) to evaluate the situation. He gave us three options: 1) a temporary fix that would last at least 2 years for $1800, 2) replace the entire inside unit for about $6500, or 3) replace the entire 15-year-old system with a much quieter, more efficient system for $12,000. Gulp. After some discussion, we bit the "BIG" bullet. The installation was completed on time and without any mess three days later. We are so satisfied --- it was worth it. It is so very quiet. He is the owner of the business and he treated us as valued friends, as well as a customer. We could not have been more pleased. It is wonderful that there are still people who are caring. read more

Scheduled an appointment for this Friday afternoon and was told that i would receive a call 30 minutes prior to the tech getting to my house. guess what, the call never came so i called the office at 3:40 and asked where the tech was. i was told that he wasnt going to make it today, with no apologies, and that i would have to reschedule for monday. fat chance of that. i was also told that there were other a/c companies in dripping springs i could call for service. that sounds like a great business plan to me. this company will never get my business, read more

Based on this companies previous yelp reviews, I scheduled an inspection for an HVAC unit in a home I am purchasing. The appointment was scheduled for yesterday, and the arrival time of the inspector was between 10am-12pm. Because the home is still occupied by the current owner, I sat in my truck in the driveway. Feeling awkward I called cornerstone to see if they had a better time estimate on their arrival. No one answered the first or the second call, which I assumed meant they were out on the road. At 11:40am A woman answered the phone and sounded clueless about our appointment. She said she would call me back immediately to give me the status of the technician. After not receiving a phone call for another hour, I called back only to get the answering machine again. An incredible 2.5hrs later, she calls me back and asks me if I still want him to come out?! Then she says for what I need done, we have to schedule an appointment but they're too busy so it wouldn't be for a least another week. So basically, I made an appointment for nothing and sat in my truck for 3.75hrs for nothing. You lost an opportunity for a long term residential and commercial client by your lack of communication and professionalism. read more