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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 Saint John, 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 time3 days
5 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Dunn Heating Air Conditioning and Plumbing
Dunn Heating Air Conditioning and Plumbing
4.7(
273
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Saint John, MO and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"Excellent! I love JT Dunn Heating and Cooling. We selected them out of 5 different contractors to install our brand new furnace and conditioner in 2017 and we hadn't had a problem since. We just had a 3 year tune-up and nothing was wrong and the ac is quietly humming away outside. Thanks to employee Robert Fitzgerald for coming out today and doing a awesome job and keeping us as customers!"
Additional Photos
Response time2 days
23 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Redbird HVAC LLC
Redbird HVAC LLC
4.9(
57
)
Central A/C - Install

Serving Saint John, MO and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Jedediah was very professional. The price to replace my HVAC was good and the installation of my new unit was great. I would recommend DT Restoration for their heating & cooling services"
Carrier Furnace
1 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Hosack Plumbing Heating & Cooling
Hosack Plumbing Heating & Cooling
4.8(
344
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Saint John, MO and surrounding areas

Approved

In business since 2009

Warranties offered

Credit card accepted

"Excellent - As on his previous service call two weeks ago, Darrin was very prompt, courteous, and happy to answer my many questions. The two outside freeze-proof faucets needed to be replaced because of their age and poor condition. I provided Darrin my copy of the estimate he wrote up for me on my prior service call (he said he didn't have a copy of it on his current work order), and he honored it as promised, letting me use my $50 credit (I had previously purchased a discounted Plumbing Service deal from Angie's List for $39.00). Darrin was able to complete the entire job in about an hour and with minimum disruption to everyone home when the water was turned off. Also, as previously promised by Darrin, I was not charged for an additional service call since I had him look at the faucets during the previous service call, but he didn't have time during that service call to replace them. In addition to replacing the two faucets, he also installed shut-offs on each water line inside of the house near each faucet."
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+2

Response time6 days
10 neighbors recently requested a quote
Recommended by93%of homeowners
McKenny Services
4.9(
38
)
Central A/C - Service or Repair

Serving Saint John, MO and surrounding areas

Approved

In business since 2010

Credit card accepted

Customers say: Quick response

"Terrell called right away and was at my home very short order. 30 minutes later my AC was as good as new (well at least as good as a nearly 20 yo machine can be) and the house was back in cool mode. Highly recommended, very fair price and if needed he will be my first call."
Response time4 hrs
Response rate93%
11 neighbors recently requested a quote
Avatar for Local Air Duct Pros
Local Air Duct Pros
4.5(
15
)
Air Ducts & Vents - Clean

Serving Saint John, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Credit card accepted

"Thank you for your trust! At Local Air Duct Pros we specialize in professional air duct cleaning, dryer vent cleaning, chimney sweep, and attic insulation. Our licensed and insured team is committed to providing top-quality service at fair prices. We appreciate your support and look forward to serving you again!"
Response time7 hrs
Response rate97%
29 neighbors recently requested a quote
Avatar for Hively Home Comfort, LLC
Hively Home Comfort, LLC
4.7(
39
)
Central A/C - Service or Repair

Serving Saint John, MO and surrounding areas

Approved

In business since 2017

Emergency services offered

Warranties offered

"I was having an issue with my AC unit, called Hively heating and cooling after reading great reviews on Thumbtack. John got back to me within the hour and came to my home that evening to try to repair a very old unit. I chose a whole new system and it was installed two nights later. I would highly recommend, John was extremely professional as was his crew, He kept me well informed every step of the way. Great job!!"
Replacements
Replacements
Replacements
Response time3 hrs
Response rate87%
60 neighbors recently requested a quote
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Air Conditioning questions, answered by experts

Both evaporator coils and condenser coils are recyclable and contain valuable, sellable metals such as copper and aluminum. Not only is it more earth-friendly to take them to a local metal recycling facility, but you can also trade them in for cash. Also, once the coils are removed from the system, they won’t have any traces of refrigerant, so you won’t have to arrange for recycling Freon or R-410A unless you’re disposing of the entire AC system.

Keeping your air filter clean is crucial for your heat pump's efficiency. As a general rule, you should check your air filter every 1 to 3 months. However, the actual frequency might vary depending on factors like the type of filter, indoor air quality, and the amount of dust and debris in your area. If you notice the filter is visibly dirty or clogged, it's a clear sign it needs attention sooner. Regular filter maintenance ensures proper airflow and helps your heat pump perform optimally, keeping your indoor air fresh and comfortable.

Excessive humidity in a room often manifests through visible signs like condensation on windows or walls, a musty or damp odor lingering in the air, peeling wallpaper or paint, and the presence of mold or mildew. Experiencing discomfort due to a consistently clammy or sticky feeling can also indicate high humidity levels.

No, it's not advisable to only replace the outside AC unit connected to your system. AC units are designed to work as a cohesive system, and older units work differently than newer units. Therefore, replacing only one component can lead to incompatibilities that affect the system’s performance. Replacing one component can void your warranty, costing you money for repairs.

Many HVAC companies offer free quotes and free estimates for repairs and new HVAC systems. Others offer low-cost quotes or apply the cost of the estimates or diagnostics to your final bill if you hire them. Be aware that some companies advertise free HVAC quotes and recoup the costs by charging more for their services. Free HVAC quotes are never truly free—they cost the company time and effort—so be a good customer. Also understand that you may end up paying for free quotes in another way if you don’t hire a reputable company.

The Saint John, MO homeowners’ guide to air conditioning services

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