HVAC reviews in San Antonio, Texas

THE DAY BEFORE THANKSGIVING AROUND 4:30 pm my ac fan outside stopped spinning and was hosting thanksgiving this year. One call to Miller cooling and heating and they had someone out here within the hour. They are awesome

A tech was sent out after describing what my AC unit wasn’t doing after I attempted to swap out a part. He showed up on time, diagnose the problem and used my part to fix the issue. Then after a day, it stopped working again. No fault of the first tech, it just so happened the contractor went bad. Called, let them know what was going on, sent a tech out within 2 hours on a SUNDAY. Replaced the part. Only charged me for the part and not the time because they had to come back out. Honest and trustworthy. I’d recommend them to my family and friends.

They were very thorough and made sure the problem was solved. Great service!

Shawn came in for a rescue!! One night, I found my thermostat not working and having too hot temperature in my place as temperature outside soared up. I contacted Shawn and the following day, he came in and fixed everything! He also checked my unit. As always, I’m very satisfied with the services I received from Shawn! I highly recommend Miller Cooling and Heating!! Thank you Sir!👍👏

Miller has always provided excellent, professional and knowledgeable service. Their technicians are always polite and friendly in demeanor and neat and professional in appearance. I intend to continue to rely on their services and recommend them for all heating and cooling needs

Miller Heating and Cooling is the only company we've used for our central air and heat for more than 10 years.

The owner, Shawn, is a good, Christian man who delivers excellent customer service at a fair price. His technicians are well trained and very knowledgeable, especially Sam!

Thank you Shawn and team for your service and support all these years. We truly appreciate you all!

Excellent service. Had a tech arrive early in the morning. He worked quickly to figure out the problem with our AC. We were given 3 different options to fix the problem with their respective prices. Tech was very friendly, helpful, and thorough.

TLDR;
Very frustrated with their customer service. They ghosted me and never refunded me from a service charge that I paid for but never received from them. Even though they said they would send me a refund.

Context:
I had a new HVAC build plus ductwork on a 1,000 sq ft home. For the most part the equipment works fine with the exception that it seems undersized when we have extreme climates in San Antonio (i.e below 30 degrees or in the upper 90s) as it struggles to maintain desired temperature in those situations. For the heater, my desired temp is ~66 degrees in the winter and for the AC, the desired temp is about 75 degrees in summer. I change out my filters twice a month since I have dogs and I run all my fans and have good overall insulation in my house. Regardless, I never really complained about these issues since I paid about half of what I would have paid for an HVAC system from a larger company. You get what you pay for.

My issue with Miller Cooling and Heating company is their customer service. The one time I did call them regarding an issue the tone in voice I got from Shawn over the phone was very defensive and I was not even coming in strong to deserve that but quite frankly, I’ve felt this way every time I talked to him. When they came onsite to address my issue I was sold an “annual priority membership service” for $165 and they were supposed to come out twice a year to maintain the system health but they never came. Every time I would try to call them about it I would get ghosted and or get the runaround. At this point, I’ve talked to a Molly, a “Larry” which might’ve been a chat bot I don’t know and I’ve tried talking with Shawn directly. Nonetheless this phone tag game spanned over the course of a year and when I finally got tired of it I asked for a refund which they said they would honor half but that was about a month ago in early April 2025 and still have not received anything. At this point I’m tired of dealing with this, it’s not the customers job to keep track of their schedule. It’s very unprofessional of them to put it on the customer to be on top of their bi annual service schedule. How am I supposed to know when you guys do your rounds? I’ll be filing a complaint and taking my business elsewhere. It’s a shame because I even referred them to a relative and gave them business but still got treated poorly. I never was malicious and I was SUPER patient with them but that only seemed to make matters worse.

Technician did a great job during prevention service visit. Very knowledgeable and helpful. Thank you sir!

"Called for emergency AC service and they showed up fast, diagnosed the issue quickly, and had us cooling again in no time. Professional, efficient, and a true lifesaver in this Texas heat!"

I have used Miller Heating and Cooling in the past to service my dinosaur system. But recently Vincent and Christian installed a new unit inside and out ! We are super happy with the system and services provided. I highly recommend the company, Shawn, and his professional Techs. Thank you so much again, for your professional services and fair prices .

Miller AC & Heating is professional, prompt and thorough in explaining options to the customer. They are efficient, courteous and will have my business from this point forward.
Another local AC company said we had a leak (the refrigerant was low) during our scheduled routine maintenance. They quoted us a minimum of $600 to replace the refrigerant or $5,000 to replace the coil all without determining if/where there was a leak. Because the price was so high I contacted Miller AC and Heating for a second opinion at 4pm Wednesday. Shawn showed up at 9:30 am Thursday. He helped us determine if our system was still under warranty; it was not as the previous homeowners had never registered the system. His technician, Vincent, came out an hour later. He ran a leak check/detection and then spent almost 2 hours searching without finding the leak. He explained how this was possible in light of the low refrigerant. Vincent agreed we did need refrigerant and added 3 pounds. We will follow up in 6 months and determine where to go from there. The charge for the consult, labor and refrigerant was less than the previous company was going to charge for refrigerant only without a leak check/search.
I appreciated this approach which will allow us time to put funds aside if we do need to replace a coil or put in a new system.

Gary was thorough and detailed in his work. I will certainly call again when a need arises.

I’m grateful for Miller Cooling’s quick response. My central air unit wasn’t cooling. The temp. was 85 degrees in the house at 7:30 a.m. Temperature outdoors was to get to 100! Sam Harris and Keith came within 1-1/2 hours after my call. They diagnosed quickly and replaced the part that was needed! I’m extremely happy!! The technicians were very professional!! Thank You! 😃

For my routine AC and heating service I had gone with three other companies and each time a new problem would come up, I was never briefed on any issues/what was done or they would not show up at the time given. When my ac unit went out Miller Cooling and Heating-Shawn answered the call and got us back in the cool with great service, a full brief on what was completed AND what preventive maintenance to do in order to make our system work for years to come. How good was Miller Cooling and Heating? So good that I signed up for the yearly membership so that I have peace of mind and known that I will receive service that is second to no one. Thank you Gentlemen for a job well done!

My wife and I own a duplex in Pleasanton, but don’t live there. Last night one of our tenants called to say the AC has stopped working. I asked him to call Shawn Miller of Miller AC because I had done work with him before. Mr. Miller arrived early the next morning and replaced the capacitor. I guess Miller AC is will get the job done in a timely manner and at a fair price.
Stuart

Fantastic work. This is the second time they have saved me from a looong hit weekend. I called them on a Sunday afternoon, on a holiday weekend, thinking I'd be leaving a message, but nope, they picked up, Came out, and fixed my AC, alll within about an hour. AWESOME and THANK YOU.

The Technician Gary was awesome, he explained everything to me and gave me some tips.
The quick response to my call and same day service is great !!!

Good honest work from this company. Communication was excellent from both the office and tech. Sam (tech) was friendly and knowledgeable. He was very meticulous and clean with is work and repeated my home. I will be recommending this company to my neighbors, friends and family. Keep up the excellent work! God bless this company.

I was very satisfied with contacting Miller Cooling & Heating for the service. Vincent, the service technician that came to take care for the AC and the problem solved. He also answered whatever questions I had. He was very professional and courteous. I always recommended this company to others who looked for the professional service for the air conditioning and heating. Thanks for your service!!!

Scheduling was easy, communication clear, tech showed up within scheduled allotment. Our issue was addressed and fixed. Something else was brought to our attention with photos, a price was given and we were able to address that at the same time. We will certainly be using Miller for and further needs as well as recommending them!