| Business | Phone |
| Applied Energy Systems Inc 50 Mc Cleary Crt, Concord L4K 3L5 | (905) 660-4885 |
| Gta Home Comfort Systems Inc 467 Edgeley Blvd, Concord L4K 4E9 | (905) 760-9458 |
| Michael Stuart Co Ltd 51 Caldari Rd #16, Concord L4K 4G3 | (905) 738-6008 |
| R & T Sheet Metal 16 Spinnaker Way, Concord L4K 2T8 | (905) 738-2295 |
| Thermo Air Ltd 40 Viceroy Rd, Concord L4K 2L8 | (905) 761-5064 |
| Thermal Hydronics Supply 357 Edgeley Blvd #3, Concord L4K 4Z5 | (905) 760-1527 |