4.6 
692 *The Angi rating for Heating And Air Conditioning Service companies in Wellston, 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 Wellston, 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 May 31, 2026
Serving Wellston, 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 Wellston, MO and surrounding areas
Approved
In business since 2003
Free estimates
Emergency services offered
"A-ok! Dunn OneHour HVAC is always top notch!"
Serving Wellston, MO and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1979
Free estimates
Emergency services offered
"They are always up front about my HVAC needs and explain things in detail before we agree for them to continue their work/recommendations."
+18
Serving Wellston, 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 Wellston, MO and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"I finally found an HVAC technician that really understands HVAC. DT Restoration will be my service company from now on. Thank you Home Advisor."
Serving Wellston, 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 Wellston, 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 Wellston, MO and surrounding areas
Approved
In business since 2010
Credit card accepted
Customers say: Quick response
"He was very courteous and stated his price up front. Was very knowledgeable. Would recommend him to anyone needing HVAC repair."
Serving Wellston, MO and surrounding areas
Approved
In business since 1980
Free estimates
Emergency services offered
"Service person arrived on time. Professional and friendly. Returned to the shop for parts, and returned within the hour. Repairs were completed within the next hour. Fridge works great now.
"
Serving Wellston, MO and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"Great company to do business with. The only complaint I have is that my air filter on my heater was left so dirty that the lack of air flow shut my heater down overnight leaving my home very cold by morning"
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.
