Swiss Air Heating & Cooling

O'Fallon, MO · HVAC contractor

Rating
4.9/5
★★★★★ 4.9
Reviews
20
Rank in O'Fallon
#23
of 174 home service pros
City Percentile
56%
rating percentile
Address
Swiss Air Heating & Cooling, 406 E Wabash St, O'Fallon, MO 63366
Phone
(636) 542-8739
Website
www.swissairstl.com/?utm_source=google&utm_medium=organic&utm_campaign=GMBListing-O'Fallon-MO

Swiss Air Heating & Cooling is a home service pro located in O'Fallon, MO. It is one of 174 home service pros listed in O'Fallon. Its 4.9-star rating is above the O'Fallon city average of 4.6 stars. There are 10 photos associated with this location.

About Swiss Air Heating & Cooling

Swiss Air Heating & Cooling is a family-owned HVAC company serving O’Fallon and the surrounding St. Louis area since 1989. We provide reliable heating and air conditioning repair, maintenance, and installation for homeowners who want the job done... More

Customer Reviews

★★★★★ 5.0 Tammy Handley · Mar 2026

We called Swiss Air to repair a leak in our gas lines. Our technician, John, was great to work with. He was friendly and personable, explained what needed to be done, and fixed the problem quickly. He also arrived within an hour or two of us calling. Overall, the experience was great, the price was reasonable, and the work was done well. We'll definitely call Swiss Air again if we need help in the future.

★☆☆☆☆ 1.0 Katie Gallagher · Feb 2026

We had Swiss Air come out to put humidifiers on our furnaces. They were able to quickly get us on their schedule and the technician was friendly. About two weeks later, the humidity in the house still felt low and the humidity reading on the humidifiers never seemed to reach where it was set to. When we called, they promptly came back out. They mentioned that the fan wasn't hooked up quite right and fixed it. However, it still seemed like the house was dry and the readings never matched what it was set to. A few weeks later, one of the furnaces stopped working completely and was covered in several inches of ice. We called out a different company this time and they quickly figured out that the humidifiers were not installed correctly and were missing a relay, which was causing the a/c to b

★★★★★ 5.0 Tathany Fritz · Oct 2024

We called to have Swiss Air come out to give us pricing to replace our entire HVAC system! Allen was amazing he stayed and answered every question we had (which was a ton) he had a book with him to show the systems that he quoted us on which was great to actually see what the system would look like. He is the reason we chose Swiss air he is knowledgeable and not pushy! Also the warranty that they offer is not given by any other company 12 year parts and 12 year labor is what is advertised and is exactly what you get! We had 3 companies come out and no one offered anything close on parts or labor! It’s great that the owner stands behind the product that he sells! They were able to install on the day requested on short notice! On installation day Ted and Josh were the installers and both wer

★☆☆☆☆ 1.0 Ria Bhaduri · Dec 2025

In response to your comment made on 'Tushar Subhra Dasgupta's review, please read this 1st visit was to check why humidifier attached to HVAC was working or not. Because humidifier was working before Swiss installed the new HVAC. Hence - in my humble opinion-it should be Swiss responsibility to check what went wrong with Humidifier after new HVAC was installed. Service technician suggested us to change Soleniod and said it will solve the issue. But it did not fix the issue and there was no validation of humidifier working status post solenoid replacement by your service technician. Which is really surprising. Moreover that solenoid replacement caused water leak (because the screw was not tightened enough) and that was the reason for 2nd visit for technician- he fixed the leak but still co

★★★★★ 5.0 Tony Bertoglio · Nov 2025

Bill came out to troubleshoot and service our boiler and he did fantastic work. Not only did he diagnose the issue, he was also willing to educate us around our system. We have had other technicians out from big companies to help with other issues, and have had awful corporate feeling experiences. As long as Swiss air stays customer focused and doesn’t turn into a company that is just trying to sell you as much as they can, we will be using them.

Accessibility & Amenities

✓ Online Estimates ✓ Onsite Services ✓ Wheelchair Accessible Entrance ✓ Wheelchair Accessible Parking Lot ✓ Installation Service ✓ Repair Services

Services

HVAC contractorAir conditioning contractorAir conditioning repair serviceBoiler supplierFurnace repair serviceHeating contractor

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This listing is informational. Contact the business directly to verify credentials, services, and availability.