| Business | Phone |
| Pro Systems Heating & Cooling 820 Eastern Blvd, Essex 21221 | (410) 391-6060 |
| Allied Phillips Htg & Ac 6015 Rossville Blvd, Essex 21221 | (410) 391-6110 |
| General Refrigeration 111 Eyring Ave, Essex 21221 | (410) 574-6586 |
| Temperature Controls Inc 201 S Marlyn Ave, Essex 21221 | (410) 574-1428 |
| Tgm Air Cond & Heating Inc 300 N Marlyn Ave, Essex 21221 | (410) 574-5691 |