| Business | Phone |
| Fred Clean Air Systems 716 Gordon Baker Rd, North York M2H 3B4 | (416) 493-8886 |
| Specialized Air Cleaner Svc 65 Martin Ross Ave #10, North York M3J 2L6 | (416) 661-0231 |
| Clean Air Systems Ltd 67 Finch Ave W, North York M2N 2H3 | (416) 512-0376 |
| Crystal Indoor Air Inc 220 Norfinch Dr, North York M3N 1Y4 | (416) 663-9558 |