| Business | Phone |
| A-Plus Air Systems 70 Unsworth Dr #7, Hamilton L8W 3K4 | (905) 385-6450 |
| Allan Ford Heating & Cooling 40 Mohawk Rd E, Hamilton L9A 2G7 | (905) 387-4346 |
| Allen's Heating & Fuel Oil 35 Miles Rd, Hamilton L8W 1C9 | (905) 383-8441 |
| Greenall Heating & Air Cndtng 87 Ashley St, Hamilton L8L 5T2 | (905) 528-0247 |
| Healy Heating & Cooling Ltd 1576 Stone Church Rd E, Hamilton L8W 3P9 | (905) 575-5546 |
| Lougheed Heating & Cooling Ltd 293 Crockett St, Hamilton L8V 1H5 | (905) 383-3511 |
| Prime Hamilton Inc 12 Ottawa St N, Hamilton L8H 3Y7 | (905) 548-6400 |
| Shipton's Heating & Cooling 141 Kenilworth Ave N, Hamilton L8H 4R9 | (905) 549-4616 |
| Tafcon Heating & Ac 136 Beach Rd, Hamilton L8L 4A2 | (905) 545-4300 |
| Bosanac Heating & Electric Ltd 43 Dunbar Ave, Hamilton L8H 3E3 | (905) 545-3959 |
| Canair 501 Rennie St, Hamilton L8H 3P6 | (905) 575-3059 |
| Colbert Heating & Cooling Ltd 70 Sawmill, Hamilton | (905) 381-0382 |
| Davis Natural Gas Svc 238 Mcanulty Blvd, Hamilton L8H 3J1 | (905) 545-6376 |
| Fox Refrigeration Inc 50 Nebo Rd, Hamilton L8W 2E3 | (905) 387-2403 |
| KW Air 409 Charlton Ave. West, Hamilton L8P 2E6 | (905) 529-8100 |