Get matched with top air conditioning pros in Defiance, MO

"Great Experience. I was concerned about the 22 yr age of our air conditioner able to keep working and wonder if a long wait time to get a product shipped like refrigerators last year, I called for a quote and within a week it was installed and working! Installers worked tirelessly until their work was done, clean and neat!"

"A-ok! Dunn OneHour HVAC is always top notch!"

"Installed a new gas water heater. Was very knowledgeable and got it done. Great job, thank you Sam."

"we had new gas-fired furnace and air conditioning system installed"

"Mike was awesome, very knowledgeable and friendly. Efficiently got the furnace running as it should be! Even took the time to educate me on what the issue was and explained what he did to fix it. Highly recommend!"

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!

"The 3 Mustache Pledge! Schraer Heating and Cooling deserves every bit of praise I can give! I called them about a worrisome noise coming from my system — one that I could only describe through a few rather vague and comical sound effects. Despite my less-than-technical explanation, their technician quickly understood exactly what I meant, found the issue, and had it fixed in no time. Their professionalism, responsiveness, and ability to solve the problem so efficiently (and with good humor!) made the whole experience stress-free. I’m so grateful for their excellent service and expertise. Highly recommend Schraer Heating and Cooling to anyone looking for honest, skilled, and friendly professionals! I will definitely keep my maintenance agreement in full force and effect!"

"Adam did the work in my home today. There were three heating and air-conditioning units which were checked out and some which needed some repair. I highly recommend him. Reasonable cost excellent knowledge and willing to take the time to do an excellent job."

"These guys are the best! We called all of the "big" companies and these guys were about half the price. The weather was hot, and our air conditioner was blowing hot air. Called and they came out that day. Service was great. They replaced our air conditioner and furnace in under 4 hours. Showed us how everything worked, cleaned up, and were on their way. We would recommend them to everybody we know, and have!"

"i called because i needed work on my water heater. they were able to come the next day and take care of everything. professional."