| Business | Phone |
| Home Comfort Ctr 158 Hamilton Rd, London N6B 1N5 | (519) 672-0400 |
| Michael Valenti Heating & Clng 183 Vancouver St, London N5W 4R5 | (519) 453-2900 |
| Snih Heating & Cooling 19 Highland Woods Crt, London N6C 5W9 | (519) 649-4964 |
| Degree Services 133 Culver Cres, London N5V 3G6 | (519) 659-1851 |
| Frank's Burner Svc 2425 Old Victoria Rd, London N6M 1B8 | (519) 453-0151 |
| Corner Gas Heating & Cooling Inc 623 Maitland Street, London N6B 3A1 | (519) 649-0166 |