| Business | Phone |
| Pinnacle Hvac 64 Church St, Leominster 1453 | (978) 537-7447 |
| Mosher Heating Co 73 Lancaster St, Leominster 1453 | (978) 343-6243 |
| J E Muse Heating Co 98 Pleasant Ter, Leominster 1453 | (978) 537-7446 |
| Tuttle Heating Po Box 74, Leominster 1453 | (978) 840-8418 |
| Cam's Heating Co 39 Battles St, Leominster 1453 | (978) 534-2333 |
| Rocca Heating Co 42 Johnson St, Leominster 1453 | (978) 537-3281 |