| 1067883 Ontario Limited | Hi-Tech Plumbing | 241 Edgeley Blvd, Unit 12, Concord, ON L4K 3Y6 | W99PC0697 87 |
| 1246175 Ontario Limited | Active Mechanical | 3153 Wharton Way, Mississauga, ON L4X 2B6 | PC0328 98 |
| 2490179 Ontario Ltd. | MMA Construction | 34 Allanhurst Cres, Brampton ON L6P 1C6 | PC 101449 24 |
| 2578060 Ontario Inc. | Drain King Plumbers | 100 St. Regis Cres, North York, ON M3J 1Y8 | PC0001 18 |
| Alcan Plumbing Limited | Alcan Plumbing Limited | 10 Sedgewick Cir, Brampton ON L7A 2P5
| PC0003 22 |
| Androus GC Inc. | Androus GC Inc. | 16-1730 Steeles Ave E, Brampton ON L6T 1R4
| PC 103041 24 |
| Angus Building Solutions Limited | Angus Building Solutions Limited | 1125 Leslie St, Toronto, ON M1C 3V2 | PC 100245 23 |
| Apex Plumbing and Drains Inc. | Apex Plumbing and Drains Inc. | 2769 Concession Rd 3, RR #1, Palgrave, ON L0N 1P0 | W99PC0501 97 |
| BAS Mechanical Inc. | BAS Mechanical Inc. | 70 Great Gulf Dr #66, Concord ON L4K 5W1
| PC 101547 24 |
| Battershell Plumbing & Heating Ltd. | Battershell Plumbing & Heating Ltd. | 254 Queen St W, Brampton, ON L6X 1B1 | W99PC0289 75 |
| Black & McDonald Limited | Black & McDonald Limited | 31 Pullman Crt, Scarborough, ON M1X 1E4 | W99PC0639 92 |
| Bruno Plumbing & Contracting Inc. | Bruno Plumbing & Contracting Inc. | 190 Creditstone Rd, Concord, ON L4K 1P3 | W99pc0269 87 |
| C.M.S. Commercial Mechanical Services | C.M.S. Commercial Mechanical Services | 2721 Markham Rd, Unit 10, Scarborough, ON M1X 1L5 | W99HC0803 93 |
| Dasa Mechanical Int. Ltd. | Dasa Mechanical Int. Ltd. | 8301 Jane St, Unit 7,8, Concord, ON L4K 5P3 | W99PC0451 97 |
| Dolvin Mechanical Contractors Limited | Dolvin Mechanical Contractors Limited | 52 High Meadow Pl, North York, ON M9L 2Z5 | W99PC0181 80 |
| Dordan Mechanical Inc. | Dordan Mechanical Inc. | 227 Victoria St, New Hamburg ON N3A 2K5 | PC 101672 24 |
| Downsview Plumbing & Heating Limited | Downsview Plumbing & Heating Limited | 4299 Queen St, Brampton, ON L6T 5V4 | W99PC0332 75 |
| Eastgate Plumbing Inc. | Eastgate Plumbing Inc. | 52 High Meadow Pl, North York, ON M9L 2Z5 | W99PC0452 78 |
| Elitrex Plumbing Ltd. | Elitrex Plumbing Ltd. | 120 Sharer Rd, Vaughan, ON L4L 8P4 | W99PC0716 87 |
| Fred Kau Plumbing & Heating Limited | Fred Kau Plumbing & Heating Limited | 38 McBrine Pl, Unit 1, Kitchener, ON N2R 1G8 | W99PC0003 09 |
| Gta Plumbing Ltd. | Gta Plumbing Ltd. | 3995 Sladeview Cres Unit 6, Mississauga, ON L5L 5Y1 | W99PC0371 99 |
| GWR Mechanical Contracting Inc. | GWR Mechanical Contracting Inc. | Box #631, Bolton, ON L7E 5T4 | W99PC0006 01 |
| Hager Industries Inc. | Hager Industries Inc. | 425 Lake Ave N, Hamilton, ON L8E 3C1 | W99BR0090 98 |
| Hi-Rise Mechanical Contracting Inc. | Hi-Rise Mechanical Contracting Inc. | 60 Saramia Cres, Unit 7, Vaughan, ON L4K 4J7 | W99HC0638 93 |
| ID Mechanical Inc. | ID Mechanical Inc. | 131 Whitmore Rd, Unit 4, Woodbridge, ON L4L 6E3 | W99PC0396 00 |
| J.M.R. Electric Ltd. | J.M.R. Electric Ltd. | 301 Thames Rd, Exeter, ON N0M 1S3 | W99PC0003 02 |
| Kelson Mechanical Inc. | Kelson | 2 Bales Dr, Sharon, ON L0G 1V0 | HC0001 20 |
| Kirk Mechanical Limited | Kirk Mechanical Limited | 1451 Grahams Ln, Burlington, ON L7S 1W5 | W99PC0214 82 |
| Meadowbrook Construction Inc. | Meadowbrook Construction Inc. | 5579 McAdam Mississauga, ON L4Z 1N4 | W99PC0004 12 |
| Nekison Engineering & Contractors Ltd. | Nekison Engineering & Contractors Ltd. | 17 St. Lawrence Ave, Etobicoke, ON M8Z 5T8 | W99PC0298 87 |
| Northlink Construction Inc. | Northlink Construction Inc. | 9131 Keele Vaughan, ON L4K 0G7 | PC101310 24 |
| Nova Plumbing & Heating Ltd. | Nova Plumbing & Heating Ltd. | 144 Romina Dr, Concord, ON L4K 4Z7 | PC0002 21 |
| Omico Mechanical Limited | Omico Mechanical Limited | 80 Bass Pro Mills Dr, Unit 1, Concord, ON L4K 5W9 | W99HC0676 75 |
| Ontario Metal Industry Ltd. | Olar Mechanical Contracting | PO Box 37, Inglewood, ON L7C 3L6 | W99HC0158 91 |
| Peel Mechanical Contractors Limited | Peel Mechanical Contractors Limited | 20 Regan Rd, Unit 6, Brampton, ON L7A 1C3 | W99PC0071 79 |
| Plumbing X-spurts Ltd. | Plumbing X-spurts Ltd. | 18 Wexford Rd, Brampton, ON L6Z 2V8 | W99PC0005 08 |
| Powerful Group of Companies Inc. | Dexterra on Demand | 6536 Millcreek Dr Unit 75, Mississauga, ON L5N 2M2 | W99BR0011 14 |
| Reliable Mechanical Services Inc. | Reliable Mechanical Services Inc. | 4 Holland dr #10, Bolton, ON L7E 1G1
| W99HC0052 94 |
| Riva Plumbing Limited | Riva Plumbing Limited | 498 Markland St, Unit 3, Markham, ON L6C 1Z6 | W99PC0723 87 |
| Sentinel Plumbing Inc. | Sentinel Plumbing Inc. | 44 Milford Ave, North York, ON M6M 2V8 | W99PC0758 91 |
| Stellar Hi-Rise Mechanical Inc. | Stellar Hi-Rise Mechanical Inc. | 126 Edilcan Dr, Vaughan ON L4K 3S5
| PC 101144 24 |
| Trademark Plumbing & Heating Ltd. | Trademark Plumbing & Heating Ltd. | 30 Intermodal Dr, Unit 50, Brampton, ON L6T 5K1 | W99PC0407 97 |
| Van Mechanical Contractors Inc. | Van Mechanical Contractors Inc. | 257 Deerhurst Dr, Brampton, ON L6T 5K3 | W99PC0006 12 |
| Vic's Group Inc. | Vic's Group Inc. | 41 Shorting Rd, Toronto, ON M1S 3V3 | HC0004 18 |
