| Business | Phone |
| Airco Airbalancing 16 Midlake Blvd Se #131, Calgary T2X 2X7 | (403) 254-5685 |
| Hydro Air Technical Svc 6115 3 St Se #D8, Calgary T2H 2L2 | (403) 252-5549 |
| Perfection Aire 815 Millar Rd Ne, Calgary T2E 5Z6 | (403) 277-1944 |
| Tech-Air Svc 4820 Macleod Trail Sw #B4, Calgary T2G 4R3 | (403) 243-5052 |
| Enviro-Metrics Technical Svc 3132 26 St Ne #138, Calgary T1Y 6Z1 | (403) 250-1113 |