4.7 
1.5k+ *The Angi rating for Heating And Air Conditioning Service companies in Lemay, 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 Lemay, 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 21, 2026
Serving Lemay, MO and surrounding areas
Approved
In business since 2003
Free estimates
Emergency services offered
"A-ok! Dunn OneHour HVAC is always top notch!"
Serving Lemay, 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 Lemay, MO and surrounding areas
Approved
In business since 2014
Free estimates
Emergency services offered
"The engineer was thorough and professional. It rained 1.5 inches while he worked on the AC unit and it barely slowed him down. He tested, cleaned and recharged my system. Pricing was reasonable."
Serving Lemay, 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 Lemay, MO and surrounding areas
Approved
Super Service Award Winner
In business since 2017
Emergency services offered
Warranties offered
"Liberty did a fantastic job identifying and rectifying airflow problems with our existing Hvac system that was installed less than two years ago by another company. They were punctual, responsive and incredibly knowledgeable. I highly recommend them."
+10
Serving Lemay, MO and surrounding areas
Approved
In business since 1993
Free estimates
Emergency services offered
"Great service. Took the time to explain what was going on with my furnace, and didn’t make me feel stupid. Was genuinely concerned about my wellbeing, strongly encouraging me to get carbon monoxide detectors—which I’m having installed right now. I will definitely use this company again."
Serving Lemay, 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 Lemay, 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 Lemay, MO and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
"Both the estimator Kevin the two installers who visited my home were very professional and kind. They answered all my questions and provided a very reasonable price for the installation of the attic insulation. I feel I was very informed on the federal rebate that was available for this installation, as well as on the recommendations of quantity of insulation I needed per residential standards and codes. I would recommend Anton and will use them in the future for my HVAC needs!"
Serving Lemay, MO and surrounding areas
Approved
In business since 2009
Free estimates
Credit card accepted
"Mostly swapping out electrical outlets. However, additional tasks included switching out drain pipes under a sink and building a railing for an exterior staircase. We had a long list. It went very well.
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