*The Angi rating for Air Conditioning companies in Saint Ann, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Conditioning needs.
*The HomeAdvisor rating for Air Conditioning companies in Saint Ann, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Conditioning needs.
Last update on July 23, 2026
Serving Saint Ann, MO and surrounding areas
Approved
In business since 1947
Free estimates
Emergency services offered
"Great customer service when I called for service. Expert technician that diagnosed the problem and quickly repaired my AC."
+2
Serving Saint Ann, MO and surrounding areas
Approved
In business since 2003
Free estimates
Emergency services offered
"I recently had a positive experience with Dunn Service regarding boiler issues, and I wanted to share my thoughts. The technician arrived promptly at the scheduled time and approached their tasks with expertise and precision, ensuring that all problems were thoroughly addressed. The pricing for their professional services was reasonable. Overall, based on my experience with Dunn Service—characterized by politeness, professionalism, and fair pricing—I would highly recommend their services to anyone facing heating and air conditioning issues."
Serving Saint Ann, MO and surrounding areas
Approved
In business since 1947
Free estimates
Emergency services offered
"We found SmartHouse almost by accident while looking for solutions to what turned out to be botched previous AC installation by a much bigger and more established company who we had trusted to do a decent job. Instead we ended up with a system that wouldn't cool the house. Smarthouse first correctly diagnosed the problem, then fixed it, and advised us on how best to heat and cool our 100+ old house. We now have a service contract with them for regular maintenance and they recently installed a mini-split for us. Their techs are great. Just the sort of people we would feel comfortable leaving alone in the house to finish a job if necessary."
+106
Serving Saint Ann, MO and surrounding areas
Approved
In business since 1993
Free estimates
Emergency services offered
"Extremely fast replacement heating and cooling installation. Exceptionally nice people. Zero problems after the installation of 2 Furnaces and 2 Air Conditioners in our zoned HVAC home."
Serving Saint Ann, MO and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1979
Free estimates
Emergency services offered
"I need a new air conditioning and furnace and they will take care of it"
+18
Serving Saint Ann, MO and surrounding areas
Approved
In business since 2009
Warranties offered
Credit card accepted
"Awesom. Highly recommend Glen. We bought new refrigerator and needed new updated waterline installed. Since we had plumber in house wanted to update things we knew we needed done eventually."
+2
Serving Saint Ann, MO and surrounding areas
Approved
In business since 2010
Credit card accepted
Customers say: Quick response
"Most definitely recommend this company very prompt polite and got the job done in record time. Will use for my furnace and air conditioner maintenance. Five Star All The Way"
Serving Saint Ann, MO and surrounding areas
Approved
In business since 1982
Emergency services offered
Warranties offered
Founded in 1982. Team members that are drug tested and background checked insuring that the people in your home are safe. We specialize in repairing and replacing residential heating and air conditioning systems. "Fixed Right or It's Free"\nTechs available Sat & Sun call for appointment.
Serving Saint Ann, MO and surrounding areas
Approved
In business since 1995
Free estimates
Emergency services offered
"Seems I was spending a ridiculous amount of money on electricity because my central unit was not operating correctly. I now have flowing cold air."
+9
Serving Saint Ann, MO and surrounding areas
Approved
In business since 2000
Emergency services offered
Credit card accepted
"Had new hvac, furnace, and hwh installed. Furnace had a couple of air leaks between a coil and furnace which I fixed myself. Hvac was spot on. Hwh failed first inspection, but was corrected in same day. For the premium price paid, these issues should not happen. Quality 4.5 because of these issues, same goes for value. Customer service is very good. They are very professional, work looks very good, clean worksite afterwards. I would recommend, but don't think about negotiating price with them. Their labor is very high."
+14
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