| Business | Phone |
| A & J Maintenance Po Box 614, Willoughby 44096 | (440) 342-0111 |
| A Air Heating & Cooling 5081 Harmony Ln, Willoughby 44094 | (440) 942-2609 |
| Advance Heating & Cooling 1380 E 348th St, Willoughby 44095 | (440) 942-7800 |
| Apple Heating 38150 Airport Pkwy, Willoughby 44094 | (440) 942-1212 |
| Arcon Heating Air Cond & Refrg 1320 E 346th St, Willoughby 44095 | (440) 946-9123 |
| Artwell Heating & Cooling 1214 E 340th St, Willoughby 44095 | (440) 975-0877 |
| Costello Heating & Air Cond 34980 Lakeland Blvd # 3, Willoughby 44095 | (440) 951-5561 |
| D'Amico Plumbing Heating 36115 Sandy Knoll Dr, Willoughby 44095 | (440) 975-3284 |
| Landis Heating & Cooling Willoughby 44094 | (440) 336-4929 |
| Royal Heating & Air Cond Svc 38348 Apollo Pkwy # 6, Willoughby 44094 | (440) 946-3355 |
| Walsh Heating & Cooling 1630 E 361st St # 12, Willoughby 44095 | (440) 946-4773 |