| Business | Phone |
| Carroll Service 4000 Shenandoah Ave, St Louis 63110 | (314) 371-3033 |
| Behrmann Co 4173 Hoffmeister Ave, St Louis 63125 | (314) 631-4400 |
| Pro-Therm Corp 11108 S Towne Sq, St Louis 63123 | (314) 894-6720 |
| Debco Equipment 2835 Washington Ave, St Louis 63103 | (314) 652-2562 |
| County Heating & Cooling Co 6921 Olive Blvd, St Louis 63130 | (314) 725-1900 |