| Business | Phone |
| Absolute Ac & Heating 17105 S State Highway 123, Seguin 78155 | (830) 379-3611 |
| Buddy Roy Air Conditioning Svc 766 N Olive St, Seguin 78155 | (830) 372-2223 |
| Cool Blue Air Cond & Heating 1706 Fm 20, Seguin 78155 | (830) 303-5545 |
| D'Aigle Ac & Heating 122 Placid Hts, Seguin 78155 | (830) 379-2283 |
| Diamond Air 226 Sunbelt Loop W, Seguin 78155 | (830) 303-9397 |
| Tri-County A/C & Heating Inc 510 N Austin St, Seguin 78155 | (830) 303-8624 |
| Soefje Electric A/C & Heating 735 Fm 477, Seguin 78155 | (830) 379-8266 |
| R & S Heating & Air Cond 1202 N Camp St, Seguin 78155 | (830) 303-3603 |
| Owen Mechanical Svc 1381a E College St, Seguin 78155 | (830) 303-4566 |
| Kool Tech Heating & Air Cond 154 Old San Antonio Rd, Seguin 78155 | (830) 560-2222 |