Swiss Air Heating & Cooling
Swiss Air Heating & Cooling is a HVAC provider serving Ofallon, MO. Rated 4.9★ with 931 Google reviews. See services, review signals, and request a quote.
HVACOfallon, MO
On this page
Company overview
- TradeHVAC
- Service areaOfallon, MO
- Google rating4.9★ (931 reviews)
- Phone(636) 215-6939
- Address406 E Wabash St, O'Fallon, MO 63366, USA
Photos
Photos from Tathany Fritz, Michael Miner, mlowder06, Swiss Air Heating & Cooling, Tina Dell
What customers say
“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…”
“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…”
“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 sh…”
“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…”
“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 o…”
Key highlights
Strengths
- Highly rated (4.9★ average)
- Large review volume (931 reviews)
Things to ask
- Confirm availability for your area and timeline
- Ask about warranty terms on parts and labor
- Request a written estimate before work begins
- Ask about payment plans or financing
Explore nearby research
Frequently Asked Questions
What services does Swiss Air Heating & Cooling offer?
Swiss Air Heating & Cooling provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in Ofallon, MO.
What is Swiss Air Heating & Cooling's rating?
Swiss Air Heating & Cooling has a 4.9 out of 5 star rating based on 931 Google reviews.
Is this company licensed in Missouri?
All listed providers have a verified Missouri contractor license at time of publication. You can verify on the Municipal licensing — no statewide Missouri HVAC license (each city regulates mechanical trades independently) lookup at https://ago.mo.gov/divisions/consumer/.
Does Swiss Air Heating & Cooling offer emergency service?
Contact them directly to ask about emergency availability and after-hours service.
How do I request a quote?
Use the CTA below to submit your ZIP. You can message this company alongside two or three other local pros for easy comparison.
Licensing verified 2026-04-23. Reviews refreshed 2026-04-23.
Licensing data: Municipal licensing — no statewide Missouri HVAC license (each city regulates mechanical trades independently) · Company data: verified business records + Google Business profile
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