| Business | Phone |
| A Precision Air Heating & Cool 1521 Swantnerville Dr, Wentzville 63385 | (636) 240-9995 |
| Arctic Air Conditioning & Htg 307 Meyer Rd, Wentzville 63385 | (636) 327-4007 |
| C & S Heating & Cooling 206 W Pearce Blvd, Wentzville 63385 | (636) 327-4238 |
| Haarmann Heating & Air Cond 315 Dyer Rd, Wentzville 63385 | (636) 828-4199 |
| Hawkins Heating & Air Cond 1711 Wortman Rd, Wentzville 63385 | (636) 639-6970 |
| Hawkins Mechanical 1579 Josephville Rd, Wentzville 63385 | (636) 332-8484 |
| Chowning Heating & Cooling 24 April Dr, Wentzville 63385 | (636) 332-0066 |
| Budget Heating, Air Conditioning and Plumbing 555 great Oaks Meadow Dr, Wentzville 63385 | (636) 887-2800 |