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Top-Rated Air conditioning pros in Ballwin - Updated Nov 2026

Avatar for Dunn Heating Air Conditioning and Plumbing
Dunn Heating Air Conditioning and Plumbing
4.7(
274
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+2 more

Serving Ballwin, MO and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"I needed to replace my parents' 40 year old AC Condenser and coil, and replace it with something that worked with the new furnace my father got installed four years prior. They were able to do the work requested, and also offered to redo the furance installation as the previous company installed it right on the basement floor where any backup/water could possibly get into the system. They were very prompt and showed up on time/on schedule. They were very upfront about costs and pricing and there were no last-minute price changes or hidden fees, which I appreciate. Work was done well and they ensured that everything worked before leaving the job site. The gentlemen working were very professional and understanding. I highly recommend them for anyone looking to replace their HVAC or to correct work that was previously poorly done."
Additional Photos
Response time2 days
14 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for SmartHouse Heating & Cooling
SmartHouse Heating & Cooling
4.7(
593
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Ballwin, 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."
Old boiler being removed
A Manual-J load calculation is performed to determine the precise amount of heating and cooling needed for each space.
Installing a Mitsubishi Hyper Heat Mini Split System to Heat and Cool this Sunroom Addition.
Mitsubishi outdoor unit installed on rooftop to heat and cool 3rd floor of this St. Louis City home.
Daikin FIT Heat Pump Installed in University City Home

+106

Response time2 days
3 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Mechanical Climate Solutions, LLC
Mechanical Climate Solutions, LLC
4.9(
66
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Ballwin, MO and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"Bob came out and quickly diagnosed our AC problem. He replaced a compressor blower fan in under 45 minutes and was gone before we knew it. He was fast and efficient and very personable. The cost of the repair was exceptionally reasonable. I will definitely use this company again if the need arises."
17 Seer 2 stage condensing unit.
Response time11 hrs
2 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Froggy's Heating and Air, LLC
Froggy's Heating and Air, LLC
4.4(
91
)
Central A/C - Service or Repair

Serving Ballwin, MO and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

"He serviced our HVAC system. House was dormant for about 9 months and for sale. We noticed the system didn?t smell good and wasn?t cooling the house right. So we called him to service our house. He found our duct work to be compromised and pulled out some dead animals. He fixed the ducts and put this shiney metal tape on all the seams. Checked the AC outside for refrigerant gas and operation. Then he checked our furnace inside. The filter was black and musty, he didn?t have our size on his truck but he ordered a couple from Walmart and had them delivered while he worked on our furnace blower. He found the round fan was all clogged with hair and dirt. He pulled it out and cleaned it outside, used some chemicals that made it shiny and cleaned. Checked the fan blades with a tool to make sure it was blowing a strong stream of air. Took a shop vac cleaned each of our floor vents and put about 10 or 15 foot of hose going in each direction. For a man by himself he was very"
Heating & Cooling 1
Heating & Cooling 1
Heating & Cooling 1
Response time11 hrs
4 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Hoffmann Brothers
Hoffmann Brothers
4.5(
44
)
Central A/C - Service or Repair

Serving Ballwin, 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."
Installation
Installation
Heat Pump
Heat Pump
Furnace

+14

13 neighbors recently requested a quote
Recommended by94%of homeowners
Perfect Air
4.7(
6
)
Central A/C - InstallCentral A/C - Service or RepairCentral A/C - Install - For Business+3 more

Serving Ballwin, 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.

3 neighbors recently requested a quote
Recommended by100%of homeowners
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Air Conditioning FAQs, answered by experts

If your AC suddenly stops working, the first thing to check is your thermostat settings. Ensure the thermostat is set to the appropriate temperature and mode (cooling). Sometimes, a simple adjustment or replacing the batteries in the thermostat can resolve the issue. If that’s not the issue, look to see if the circuit breaker tripped. These basic checks can often identify simple fixes before you need to call for professional assistance.

Set your house temperature between 55 and 85 degrees Fahrenheit while on vacation, depending on the season. If it’s winter, don’t go below 55 degrees. In the summer, the best AC temperature for energy savings is no higher than 85 degrees. You can save anywhere from 10% to 15% on your energy costs by adjusting the temperature while you’re away. If you have a smart thermostat, set up vacation modes for each season. On your way home, turn off vacation mode to allow the home to warm up or cool down before you arrive.

Yes, AC coil cleaning is definitely worth it. Cleaning your AC coils ensures your AC unit will function efficiently for the long term. Dirty and grimy AC coils make your unit work harder to cool your home, resulting in higher electric bills. Additionally, having your coils professionally cleaned regularly will reduce the possibility of extensive maintenance and repair costs.

Ideally, an AC system should never need more Freon (a popular refrigerant) because it circulates in a closed loop. However, refrigerant leaks are not uncommon and may occur gradually over 5 to 15 years. If your system has a leak, it will need to be topped up in a process known as an AC recharge. Signs of a refrigerant leak include weakened AC performance, increased humidity in your home, higher utility bills, and a hissing sound from the unit. The cost of an AC recharge will depend on the size and type of your AC unit, as well as the type of refrigerant it uses.

The best way to reduce heat upstairs is to release it by opening a window. Hot air rises, and if you can create some airflow by opening a window upstairs and also one on a lower level, the hot air should be pushed out of the home. Remember that fans pointing out the window do a much better job of circulating air than fans pointing into the home.

The Ballwin, MO homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.