4.7 
1.5k+ *The Angi rating for Heating And Air Conditioning Service companies in Frontenac, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.
*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Frontenac, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.
Last update on June 14, 2025
Serving Frontenac, MO and surrounding areas
Approved
In business since 1947
Free estimates
Emergency services offered
"The technicians are so nice and helpful, professional, and punctual. They've maintained my hvac for the three years I've lived in this house and all runs smoothly."
+106
Serving Frontenac, MO and surrounding areas
Approved
In business since 1947
Free estimates
Emergency services offered
"The person who handled my call was friendly and professional. She told me a technician would be at my house in 4 hours and called me when he was on his way. The technician was outstanding, on time, professional, friendly, and quickly diagnosed and fixed the problem...best of all, he didn't try to sell parts/service that I didn't need! Best experience with an HVAC company I've ever had."
+2
Serving Frontenac, MO and surrounding areas
Approved
In business since 2003
Free estimates
Emergency services offered
"A-ok! Dunn OneHour HVAC is always top notch!"
Serving Frontenac, MO and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1979
Free estimates
Emergency services offered
"I always recommend Anton's to family and friends who need HVAC services. Their prices are reasonable, and their service is top notch! All of their technicians are very professional and considerate and they don't try to sell you things you don't need. Ronan just came out this morning to do our annual A/C inspection. The service was excellent as always. He took the time to explain everything and made recommendations. I never felt pressured, and I trust this company to take care of my HVAC needs. They've got a customer for life!"
+18
Serving Frontenac, MO and surrounding areas
Approved
In business since 1993
Free estimates
Emergency services offered
"Great! I have used Rhymes for all my HVAC in three different homes!"
Serving Frontenac, MO and surrounding areas
Approved
In business since 2009
Warranties offered
Credit card accepted
"They were professional from the phone call to the installation. He had everything he needed to replace the hot water heater and proceeded. I would definitely recommend Hosack Plumbing."
+2
Serving Frontenac, MO and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"I had them do a full HVAC replacement and it was done in about 6 hours. Great work and professional, always answers calls for any questions. I would definitely recommend."
Serving Frontenac, 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
Serving Frontenac, 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 Frontenac, MO and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
"Installed my furnace the same day of contracting them! They were efficient and courteous and done within a couple of hours."
From average costs to expert advice, get all the answers you need to get your job done.
Heat pumps are highly efficient and can help reduce heating and cooling costs. Learn about heat pump costs in St. Louis, Missouri, to set your budget.
When determining the AC coil cleaning cost in St Louis, MO, you’ll need to factor in the size, cleaning method, and type.
Heating and cooling system on the fritz? Discover the factors that go into HVAC repair costs in St. Louis, MO, and how you can save money on this crucial home update.
A central air system is great for someone looking to cool and heat their home all year round. Even if your home uses baseboard heating, you can still make the switch. Read on to learn more about adding central air to a baseboard-heated house.
Try these 12 top tips to keep your air conditioner working at maximum efficiency. Stay cool, and minimize energy costs with this expert air conditioning advice.
Learn how to save money on air conditioning costs this summer by following this handy guide all about your favorite cooling system.
