Saint Charles County, MO
HVAC Pros in Saint Charles County, MO
Compare verified HVAC providers serving Saint Charles County, MO.
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Quick facts
- AreaSaint Charles County
- StateMO
- Providers22
- Typical ticket$3.5k – $11k
Top local providers
Request quotes →- installationrepairinspectionemergency
What customers say “The quote experience: The comfort specialist (sales and research) who came through and inspected a 900 sq ft condo.…”
- Budget Heating, Cooling & PlumbingTop ratedinstallationrepairemergency
What customers say “The techs that come out initially were very professional and personable. On the day of my system install the employers…”
- installationrepairinspection
What customers say “Another really good experience with a technician at Jerry Kelly. Jessica was fantastic with her electrical help with…”
- Design Aire Heating and CoolingTop rated
What customers say “High Quality system, easy installation. We got a new HVAC system for our home. Design Aire had the best prices for a…”
- Hoff Heating & ACTop rated
What customers say “Honestly, we were about to go with another company, mainly because of the longer parts and labor warranty. But…”
- Air Comfort Service, Inc.Top rated
What customers say “We had a great experience with Air Comfort Services. We just had them install a full HVAC system. They came out…”
- Stay Cool Climate ControlTop rated
What customers say “Called 3 companies early in the morning. Stay Cool was able for me to take pics of the area while other companies…”
- VittTop rated
What customers say “Jordan was my maintenance man that Vitt Heating and Cooling sent out to check my furnace. It’s the first time I have…”
- B & B Heating & CoolingTop rated
What customers say “10 out of 5 Stars! Justin Popp from B&B Heating & Cooling was absolutely fantastic. He came out this morning and had…”
- Hosack Plumbing, Heating & CoolingTop ratedinstallationrepairemergency
What customers say “Really appreciate the prompt service and repair that I received from Hosack. Assessed our issue and had a brand new…”
- Design Aire Heating and CoolingTop rated
What customers say “Josh came and serviced our furnace and humidifiers. He did a very thorough job making sure everything was working…”
- Swiss Air Heating & CoolingTop rated
What customers say “We called to have Swiss Air come out to give us pricing to replace our entire HVAC system! Allen was amazing he stayed…”
- No Problem Heating and CoolingTop rated
What customers say “NPM was assigned to us by our home warranty company. I submitted a request and the office staff called first thing the…”
- Faszold Heating and CoolingTop ratedinstallationrepairemergency
What customers say “I recently had a new HVAC system installed and had a fantastic experience from the initial consultation through the…”
- Vitt Heating & CoolingTop rated
What customers say “If you are looking for a hvac system, call Vitt. It will be well worth your time. Vitt installed a Trane heat pump and…”
Local pricing snapshot
Repairs typically run $150–$600. Full system replacements range from $4k for a basic furnace to $12k+ for a premium heat pump. Prices vary by system type, efficiency, and whether ductwork modifications are needed.
Cities in this county
Missouri hub →Frequently Asked Questions
Do HVAC pros in Saint Charles County charge travel fees?
Some rural routes include a trip charge. Confirm before scheduling and ask whether it applies to the estimate.
Which cities are in Saint Charles County?
Saint Charles County includes O'Fallon, Saint Charles.
Are permits required for HVAC work?
Most Missouri jurisdictions require a mechanical permit for equipment swaps. Ask your provider who pulls the permit and how it is priced.
Licensing verified weekly. Reviews refreshed within the last 30 days.
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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