❄️ Official Rankings
10 Best HVAC in Saint Peters, MO (August 2026)
We compared 10 hvac serving Saint Peters and Saint Charles County, Missouri, and ranked the top providers by verified reviews, ratings, and local reputation — 17,722 customer reviews in all.
The 10 listed below hold an average rating of 4.9 out of 5, led by B & B Heating & Cooling. Updated for August 2026.
- HVAC ranked
- 10
- Average rating
- 4.9★
- Reviews analyzed
- 17,722
- Area codes
- 636, 314
B & B Heating & Cooling
⭐ 5.0 · 1444 reviews
2115 S Old Hwy 94, St Charles, MO 63303
Comfort Experts, Inc
⭐ 5.0 · 402 reviews
5501 St Charles St St 101, Cottleville, MO 63304
Ozark Mechanical
⭐ 5.0 · 175 reviews
2108 Parkway Dr, St Peters, MO 63376
Jerry Kelly Heating, Air Conditioning, Electrical & Plumbing
⭐ 4.9 · 6979 reviews
4631 N St Peters Pkwy, St Peters, MO 63304
Air Comfort Service, Inc.
⭐ 4.9 · 1205 reviews
1286 Jungermann Rd Ste e, St Peters, MO 63376
Faszold Heating and Cooling
⭐ 4.9 · 870 reviews
1613 E Terra Ln, O'Fallon, MO 63366
Calumet Cooling LLC
⭐ 5.0 · 77 reviews
9 Calumet Meadows Ct, St Peters, MO 63376
Budget Heating, Cooling & Plumbing
⭐ 4.8 · 6317 reviews
325 Mid Rivers Mall Dr, St Peters, MO 63376
C-N-O Comfort Zone Heating & Cooling
⭐ 4.9 · 93 reviews
145 N Service Rd, St Peters, MO 63376
HVAC listed here serve Saint Peters, Saint Charles County, and nearby ZIP codes including 63376.