| Business | Phone |
| H Griffiths Co Ltd Toronto Dominion Ctr #P2, Toronto | (416) 364-5862 |
| Karr Group 245 Carlaw Ave, Toronto M4M 2S1 | (416) 463-5854 |
| Marlo Contracting 939 Mount Pleasant Rd, Toronto M4P 2L7 | (416) 480-2121 |
| Skylane Mechanical Svc 57 Kippendavie Ave, Toronto M4L 3R3 | (416) 694-5596 |
| Urban Mechanical Contracting 3131 Lake Shore Blvd W, Toronto | (416) 253-4351 |
| Xtra Mechanical Ltd 14 Duncan St, Toronto M5H 3G8 | (905) 789-7771 |