| Business | Phone |
| Igloo Refrigeration & Heat 103 Grenadier Dr, Kingston K7K 6E7 | (613) 544-2050 |
| Industrial Systems 700 Dalton Ave, Kingston K7M 8N8 | (613) 548-8699 |
| Jenal Heating & Air Condition 780 Burnett St, Kingston K7M 5W3 | (613) 634-3700 |
| O'Neil Heating & Cooling 1260 Sydenham Rd, Kingston K7M 3L9 | (613) 545-7787 |
| Standard Mechanical Systems 174 Division St, Kingston K7L 3M8 | (613) 542-1943 |
| Therm Aire Ltd 50 Grant Timmins Dr, Kingston K7M 8N2 | (613) 546-7660 |
| Triheat 9 Terry Fox Dr, Kingston K7M 7K5 | (613) 549-4040 |
| Bradford Heating Ltd 5 Cataraqui St, Kingston K7K 1Z6 | (613) 546-0446 |
| Brough Sheet Metal Co Ltd 49 Terry Fox Dr, Kingston K7M 8N4 | (613) 544-4794 |
| Caves Mechanical Systems Inc 774 Baker Cres #C, Kingston K7M 6P6 | (613) 384-5533 |
| RackAir (Kingston) Inc 1160 Clyde Court, Kingston K7P 2E4 | (613) 389-2962 |