| Business | Phone |
| All-Knight Heating & Cooling 3080 Scioto Darby Executive Ct, Hilliard 43026 | (614) 771-9902 |
| Atlantic Heating & Cooling 5897 Ancestor Dr, Hilliard 43026 | (614) 488-9388 |
| Bruner Corporation 3637 Lacon Rd, Hilliard 43026 | (614) 334-9000 |
| Buckeye Heating & Cooling Hilliard 43026 | (614) 850-6104 |
| Columbus Mechanical 4340 Lyman Dr, Hilliard 43026 | (614) 771-7001 |
| Columbus Worthington Air 4340 Lyman Dr, Hilliard 43026 | (614) 771-6535 |
| Metro Heating & Air Cond 4731 Northwest Pkwy, Hilliard 43026 | (614) 777-1237 |