| Business | Phone |
| Hoffer Mechanical Co Ltd 460 Grays Rd #A, Hamilton L8E 2Z4 | (905) 561-6660 |
| J Holmes Mechanical Inc 60 Harlowe Rd #11, Hamilton L8W 3R6 | (905) 318-1722 |
| Lockerbie & Hole Contracting 1400 Main St W, Hamilton L8S 1C7 | (905) 308-9712 |
| Mattina Mechanical 38 Imperial St, Hamilton L8L 4E3 | (905) 544-6380 |
| Stewart Mechanical Contracting 110 King St W, Hamilton L8P 4S6 | (905) 529-4805 |