| Business | Phone |
| Air Source Inc Sykesville 21784 | (410) 795-2070 |
| Aqua Air Heating & Cooling Co 7349 Gaither Rd, Sykesville 21784 | (410) 552-9000 |
| Bridgeport Heating & Cooling 6571 Kali Dr, Sykesville 21784 | (410) 781-4200 |
| California Air 5103 Bushey Rd, Sykesville 21784 | (410) 795-0705 |
| Comfort Air Inc 49 Venture Way # 9, Sykesville 21784 | (410) 549-6700 |
| Jerry's Heating & Air Cond Inc 5360 Enterprise St, Sykesville 21784 | (410) 549-5931 |