| Business | Phone |
| Abraham Mechanical Air Systems 846 Vickers St N, Thunder Bay P7C 4C1 | (807) 622-0539 |
| Adduono's Sheet Metal & Htg 1110 Lithium Dr, Thunder Bay P7B 6G3 | (807) 345-5151 |
| All-Temp 1125 Roland St, Thunder Bay P7B 5M5 | (807) 623-6753 |
| Isberg Heating 4323 Mapleward Rd, Thunder Bay P7K 1A4 | (807) 475-3450 |
| Keenan Sheet Metal & Heating 166 Powley St, Thunder Bay P7A 2K7 | (807) 345-6121 |
| Lakehead Burner Svc Ltd 801 Gore St W, Thunder Bay P7E 3S7 | (807) 768-0674 |
| Matson's Burner Svc Ltd 2308 Broadway Ave, Thunder Bay P7C 5N5 | (807) 939-1961 |
| Nesco 114 Miles St E, Thunder Bay P7C 1J4 | (807) 623-0441 |
| Prestige Fireplaces Your Beam 755 Tungsten St, Thunder Bay P7B 6T1 | (807) 346-2244 |
| Bac Electric Ltd Rr 13 Stn P, Thunder Bay P7B 5E4 | (807) 626-4247 |
| Buhler Mechanical Svc 141 Frederica St W, Thunder Bay P7E 3V8 | (807) 475-3456 |
| Excel Sheet Metal Ltd 328 Cumberland St N, Thunder Bay P7A 4P2 | (807) 345-8437 |