| Business | Phone |
| Aireco Inc 1031 Wilso Dr, Baltimore 21223 | (410) 646-1310 |
| Janitrol Distributors 6340 Frankford Ave, Baltimore 21206 | (410) 488-1700 |
| Mar-Tech Appliance Svc 4901 Belair Rd, Baltimore 21206 | (410) 254-2015 |
| R E Michel Co 1030 Greenmount Ave, Baltimore 21202 | (410) 685-8371 |
| Taze & Hewitt Inc 9331 Philadelphia Rd # E, Baltimore 21237 | (410) 574-2727 |
| Waldron Of Maryland Inc 8997 Yellow Brick Rd # A, Baltimore 21237 | (410) 574-9200 |