Get matched with top heating and air conditioning pros in O Fallon, IL

Looking for reliable HVAC service in St. Louis? Aire Serv of St. Louis is your local expert for residential and commercial heating and cooling. From emergency AC repair during humid Missouri summers to furnace maintenance before the winter chill, our professional technicians are available to keep your home comfortable. We pride ourselves on transparent, upfront pricing, no overtime charges, and the "Done Right Promise." Whether you need a system replacement, duct cleaning, or a routine tune-up in Fenton, Webster Groves, or Kirkwood, we are the team you can trust. Breathe easy with Aire Serv—your comfort is our top priority. Call us today to schedule your service!

"Very pleasant experience. I needed a new company and I was so pleased. They did an excellent job. Stains that would always come back after time have disappeared. So fast; so helpful!"

"HIGHLY RECOMMEND! Did much research on companies 1st b/c I was aware of scams with duct cleaning. But this company is very legitimate professional - techs and receptionist, all the way around! Top quality service! On time and will answer any questions and explain it all in great detail? very polite and professional. And yes, they will take photos throughout if you want to see exactly the differences of before and after. I had bought a 1959 home which had never been cleaned. See my before/after photos. Before, I kept having to wipe off my counter tops a few times a day because they always felt gritty. After the duct cleaning, they stay clean now - A HUGE DIFFERENCE! The guys were awesome and went above and beyond by also helping me carry a heavy appliance from upstairs to my basement. Very nice guys! They cleaned up any mess before leaving, like they had never there. You will not regret using their service. Lower Price than others too! Thanks Danny & Cameron! Great Work!"

"A new hvac venture thatâ s starting off great Super customer service at a good price. Solved vexing thermostat issue quickly Arrived within an hour. Experienced and knowledgeable My new hvac first call"

"They were the only one that were able to come out on a Sunday. Found the problem and got our ac working during a heat advisory. Very satisfied with the results and will continue to use them again. Will recommend them to friends and family."

"I received 5star treatment from Ray Hiller, he identified the problem and solved it, I was up and running in no time.."

"Had issues with my thermostat but didnâ t give up at all. I would highly recommend Middle Man Maintenance."

"My technician Keith was great. Friendly and super informative. Also too a quick look at the entire drainage system and gave my an idea of where problems will pop up the future without preventative measures (my home was built in the 50s and while the previous owners took really good care of the house nothing has been gutted and replaced yet)."

"The Steven Brand did a very professional and thorough job. They removed my kitchen cabinet and old stove top to create a space for a 30 inch stove."

"Vinc and his crew at VMK did and excellent job and I highly recommend there services ! Dave Caputo"