| Business | Phone |
| A 1 Agences Techniques 5555 Ch Du Bois-Franc, Saint-Laurent H4S 1B1 | (514) 745-1190 |
| Airco Inc 7467 Rte Transcanadienne, Saint-Laurent H4T 1T3 | (514) 332-3461 |
| Airco-Quemar-Revac 405 Boul Montpellier, Saint-Laurent H4N 2G6 | (514) 744-6751 |
| Industries Lennox 3540 Boul Poirier, Saint-Laurent H4R 2J5 | (514) 336-8440 |
| Ita Climatisation & Chfge 3185 Rue Halpern, Saint-Laurent H4S 1P5 | (514) 733-0527 |
| Konsultec 5599 Ch Saint-Francois, Saint-Laurent H4S 1W6 | (514) 956-5596 |
| Lanrefco Inc 3608 Boul Poirier, Saint-Laurent H4R 2J5 | (514) 956-7548 |
| Omni Ventilation Inc 2775 Rue De Miniac, Saint-Laurent H4S 1E5 | (514) 334-5400 |
| Ravcor Refrigeration Inc 363 Rue Isabey, Saint-Laurent H4T 1Y2 | (514) 731-3582 |
| S & S Conversions Inc 6019 Ch Saint-Francois, Saint-Laurent H4S 1B6 | (514) 337-7210 |
| Societe De Controle Johnson 355 Boul Montpellier, Saint-Laurent H4N 2G6 | (514) 747-2580 |
| Brock Engineering 4935 Rue Bourg, Saint-Laurent H4T 1H9 | (514) 344-1555 |
| Carrier Canada Ltee 5060 Rue Levy, Saint-Laurent H4R 2P1 | (514) 856-1336 |
| Climatisation Bativac 2525 Rue Guenette, Saint-Laurent H4R 2E9 | (514) 856-2000 |
| Empire Maintenance Industries 180 Montee De Liesse, Saint-Laurent H4T 1N7 | (514) 398-9705 |