| Business | Phone |
| Advantage Heating Ac 20215 Beaver Creek Rd, Hagerstown 21740 | (301) 393-5737 |
| Air Climate Control 1190 Virginia Ave, Hagerstown 21740 | (301) 797-6167 |
| Appalachian Electrical & Air 47 Redwood Dr, Hagerstown 21740 | (301) 791-0325 |
| B & B Air Cond & Heating Svc 1101 Conrad Ct, Hagerstown 21740 | (301) 393-5700 |
| Bel Air Heating & Cooling 11000 Bower Ave, Hagerstown 21740 | (301) 582-0490 |
| Ward-Boland Assoc Inc 13121 Gentry Dr, Hagerstown 21742 | (301) 791-0187 |
| Wlm Svc 18906 Poffenberger Rd, Hagerstown 21740 | (301) 293-1541 |
| Mc Crea Equipment Co Inc 16126 Business Pkwy, Hagerstown 21740 | (301) 393-9475 |
| Miller & Anderson 920 Eldridge Dr # E, Hagerstown 21740 | (301) 733-6695 |