HVAC Services in O'Fallon, MO
7 HVAC contractors found
Stay Cool Climate Control
“1,096 reviews yield a perfect 5.0-star rating, with customers consistently highlighting same-day emergency…”
Design Aire Heating and Cooling
“Eight reviewer accounts specifically mention receiving same-day or rapid-response service, with technicians…”
Hoff Heating & AC
“Every reviewer awarded five stars, with 1,515 total ratings reflecting consistent satisfaction. Customers…”
Faszold Heating and Cooling
“870 reviews yield a 4.9-star average; positive feedback emphasizes sales transparency and clean installations…”
KirbnJays Heating & Cooling
“347 reviews yield a 4.9-star average, with every published rating awarding 5 stars. Multiple customers…”
Reliable Heating & Cooling Inc.
“Five of six sampled reviewers mention extended tenures with the company, ranging from 12 to over 30 years.…”
HVAC Service Costs in O'Fallon, MO
Pricing ranges across all HVAC services offered in O'Fallon.
| Service | Typical Range | Price Points |
|---|---|---|
| AC Repair | $83–$3,080 | 7 items → |
| AC Installation | $168–$22,400 | 8 items → |
| AC Replacement | $2,352–$17,920 | — |
| HVAC Maintenance | $15–$824 | 7 items → |
| HVAC Repair | $83–$3,850 | 7 items → |
| HVAC Service | $76–$15,228 | 6 items → |
| Emergency HVAC | $165–$3,850 | — |
| Commercial HVAC | $2–$88,000 | — |
Prices reflect continental metro averages based on HomeAdvisor and Angi published cost data. Last updated: April 2026.