| Business | Phone |
| Action Heating & Cooling Bel Air 21014 | (410) 836-3844 |
| All Pro Heating & Air Conditio 728 Baltimore Pike # 105, Bel Air 21014 | (410) 836-7955 |
| Ars General Heating & Ac Bel Air 21014 | (410) 836-8327 |
| Basic Services Inc 1610 Ruffs Mill Rd, Bel Air 21015 | (410) 838-6695 |
| Bill's Refridgeration & Air Bel Air 21014 | (410) 638-6766 |
| Carrington Heating & Air Cond 2108 Geneva Pl, Bel Air 21015 | (410) 893-7971 |
| Comfort Air Bel Air 21014 | (410) 838-1584 |
| County Cooling & Heating 1114 Pericles Dr, Bel Air 21015 | (410) 420-8999 |
| Eagle Air Conditioning Svc 626 Prestwick Trl, Bel Air 21014 | (410) 879-7001 |
| Excel Hvac Svc Inc 605 Weatherby Rd, Bel Air 21015 | (410) 803-2279 |
| Mc Donough Mechanical Svc Inc 122 N Tollgate Rd # 2002, Bel Air 21014 | (410) 803-1202 |
| Mullhausen Heating & Air Cond 3732 Peach Orchard Rd, Bel Air 21014 | (410) 879-2821 |
| Ryan's Heating & Air Cond 708 Prospect Mill Rd, Bel Air 21015 | (410) 893-1735 |