| Business | Phone |
| B & J Heating & Ac Ltd 7 Roxborough Crt, St Catharines L2M 6E4 | (905) 937-1066 |
| Goosen Heating & Air Cond Ltd 68 Grantham Ave S, St Catharines L2P 3H1 | (905) 984-6456 |
| Guenther Heating & Air Cond 31 Seapark Dr, St Catharines L2M 6S5 | (905) 684-6214 |
| Heco Residential 24 Hiscott St, St Catharines L2R 1C6 | (905) 688-6350 |
| J & S Heating & Air Cond 5 Seapark Dr, St Catharines L2M 6S5 | (905) 682-9287 |
| Mac Kay Heating & Cooling 76 Ridley Rd, St Catharines L2S 3Y8 | (905) 688-1849 |
| Suretemp Systems Ltd 320 Vansickle Rd #1, St Catharines L2R 6P7 | (905) 685-4809 |
| Wilgard Environmental Control 197 Louth St, St Catharines L2S 2R4 | (905) 684-7449 |
| Brian Easton Heating & Ac 17 Sullivan Dr, St Catharines L2N 1K3 | (905) 646-2665 |
| C R Turner Heating Plumbing 19 Stanley St, St Catharines L2M 1S5 | (905) 646-6681 |
| Crescent Air Conditioning Ltd 131 Cushman Rd #1, St Catharines L2M 6T5 | (905) 688-2241 |