Air Stat Air Conditioning and Heating Logo Air Stat
Air Conditioning and Heating (832) 788-7828 Serving the Greater Fort Bend and Harris counties.


Dan was very knowledgable and professional. He was very thorough and took the time to explain everything in detail as he walked me through the entire heating system. He addressed all of my concerns and and gave me several suggestions on improvements. In addition to the furnace, he stayed longer to answer some plumbing and other household service questions I had.

I e-mailed Dan Gillis, the owner, to ensure I could use two coupons and that he was able to provide the service to my part of town, the Spring area. Even though it was the weekend, he responded promptly and committed that he'd be able to schedule me when he had other customers in the area, so his technician could make more than one service call nearby. Within a day or two he called and we were able to set an appointment. Because I had to leave work to meet the technician at my home, Dan was more than accommodating in terms of timing and was very flexible and wanted to ensure that it was convenient for me, even if it meant his technician wouldn't be scheduled with back-to-back appointments. The technician was prompt in arriving and seemed to be thorough in his inspection and explanation of what he found. I was more than satisfied with the service I was provided and will use Air Stat in the future.

The blower on our system was turning itself off. AirStat came first thing the next morning to diagnose and fix the problem. They figured out that the computer board needed replacing, and some crazy re-wiring that had been done in the past needed to be undone.

It went great. I called Daniel on Thursday afternoon, and he sent a very knowledgeable tech out first thing the next morning. Before he arrived, I got a call from Daniel telling me who and what to expect. After the tech diagnosed and thoroughly explained the problem, Daniel called with a quote. The tech was also very good about making suggestions of how to keep our system clean during the construction project we have in progress. The system is working again perfectly.

Dan worked to find the unit that best fit our needs and budget. The work team was quite careful to ensure that the work area was protected. Work was professional and well done. Workers were there after hours completing the work to ensure that we had air conditioning that night. The work site was kept clean and all trash was removed at the end of the job. The air conditioner improved the cooling in the house and because of higher efficiency lowered our electric bills this summer. We have already used this company again to repair a unit at my husband's work place.

Air Stat did both duct and AC work for us and we were very pleased with the work. We had gotten several estimates. We felt Air Stat's proposal was the most straight-forward and honest. Very easy to work with. Staff is professional and cleaned up everything when they were finished. We will definitely be using them in the future as our regular AC company

My old A/C unit had reached a point where it was no longer cooling my house and was running 18-20 hours a day to even keep the temperature within 10 degrees of where the thermostat was set. I had 4 bids to replace my unit and Dan's was not only very competitive, he also was installing a much better unit than was his competition. After looking into what Consumer Reports said about American Standard (it was the best rated of all the units reported on CR), and looking at the price quoted to me by Dan at Air Stat, it was an easy decision to make.The crew was on time, very courteous, had my unit installed within a few hours (5-6), including a lunch break, and left the work site clean and neat. We couldn't be happier with the work done for us by Air Stat and highly recommend them to anyone needing quality work done at a fair and reasonable price. Dan put in a 15 seer unit, where we had a 12 seer before. He said that a 13 seer was the least I could purchase and meet requirements, but the 15 seer would be more energy efficient, do a better job of cooling the house than my old unit and that I should see an immediate difference in my electric bill.

Overall, the installation exceeded my expectations. Not only was the installation very professional, Dan and his crew took the time to explain what they were doing and why.

I got several estimates to completely replace an A/C unit, from companies both large and small. Although the bid was not the absolute lowest, I chose to go with Air Stat for several reasons. First and foremost, I liked dealing with the owner Dan Gillis instead of a salesman. He listened to my concerns and needs. Secondly, he was very knowledgeable and explained several options for our situation. He suggested solutions that no other company offered. Lastly, it was very obvious that he was interested in solving our cooling issues as opposed to just trying to sell us an A/C unit. Mr. Gillis got our job scheduled quickly and he and his crew worked until late in the night to complete the job. His unique solution for our situation has made this summer the most comfortable one we have experienced in years. We have been very pleased with the results.

After a home inspection, Dan came out to do a complete walk through of the HVAC system. He went above and beyond what I have ever experienced. He was very thorough and talked us through all aspects of the heating and cooling systems of the house. He is very knowledgeable, professional and kind.

Dan and his team came in to inspect and recommend why our A/C system had suddenly stopped working .He came out immediately and gave us good information on our problem. He could have sold us much more than we needed, but told us what we could do to replace our system based on effieciency, cost, and SEER rating. Everyone on his team were friendly, professional and very courteous. I would recommend Air Stat and Dan Gillis to anyone and we plan to continue usung him for maintenance of our new system.

Dan Gillis and his employees at Air Stat were incredibly professional, prompt, and trustworthy. Both me and my property renter (an experienced professional) were impressed by Air Stat. They were very quick to respond, gave a clear estimate, then called to walk through the work following the job as there were a couple of things needed that weren't on the estimate. Dan wanted to clarify everything before expecting payment. Their pricing was also reasonable. I recommend them highly, and will use them again.

I first called in the late evening...but despite being at a Christmas party Dan called me back within 20 minutes just as he said he would. We set up a time the next day for a service call. They were willing to work around my teaching schedule, so that I did not have to take any time off of work. Edgar , the service technician, was on time. He was very professional, helpful, and kind! He explained everything, and he also was willing to go above and beyond and even help me change an air filter. I was very pleased with the service from the start to finish. Dan talked with me afterwards to make sure everything went well & I was satisfied. I will definietly be a repeat customer...awesome service!

After the first cool morning of the year we tried to turn on our heater but it didn't work. We'd recently moved in to an older house over the summer, so we had Dan come out to straighten out the situation. He was able to figure out what the problem was and fix it quickly, and also gave us a good run down of our HVAC system in general, pointing out areas that could cause potential problems down the road. However, he was very reasonable and only recommended we fix the things that would really make a difference. He also gave us some good references to help out with some of the other problems he noted in our attic.

Totally professional. Worked was performed as agreed to, area was cleaner than when he got there. The cost was actually less than I had anticipated. Overall a very good job and I highly recommend Dan and Air Stat.

Best referral I have ever gotten. You have found the last AC guy you will ever need. Dan answers his phone!!! Even if he is up in a hot attic he will answer it and call you right back. Sure, I might be able to beat his prices by 5-10%, but what a small price to pay to deal with a real professional that takes pride in his work...and I'm not even his Father. Seriously, he is punctual, personable, patient with all my questions and I have a lot of them. I've never had a job take more than 2 days even replacing my AC and ducts. I NEVER call anyone else. He stands by his work.

Dan Gillis and crew were on time on budget and did excellent work my bills have been cut in half or less. Top quality workmanship and equipment.