| Business | Phone |
| Bottom Line Mechanical Systems 22 Haven Rd, Windham 4062 | (207) 892-9316 |
| Steinert Co Inc 64 Tandberg Trl, Windham 4062 | (207) 878-8008 |
| Dirigo Refrigeration Co 15 Stone Brook Rd, Windham 4062 | (207) 773-0822 |
| Donnelly's Hvac Windham 4062 | (207) 892-1435 |