| Business | Phone |
| Aitons' Equipment Inc 11 Nicholas Beaver Rd #Rear, Guelph N1H 6H9 | (519) 824-2911 |
| Hall's Heat & Cool Inc 385 Michener Rd, Guelph N1K 1E8 | (519) 836-8900 |
| Mullin Heating & Air Cond 1949 Gordon St, Guelph N1L 1G7 | (519) 824-3848 |
| Pilon Mechanical 61 Malcolm Rd #2, Guelph N1K 1A7 | (519) 823-1490 |
| Regal Air Ltd 71 Wyndham St S, Guelph N1E 5R3 | (519) 836-3370 |
| Ridler Heating & Cooling Sup 24 Hayes Ave, Guelph N1E 5V5 | (519) 836-4120 |
| Shurtemp 397 Woodlawn Rd W, Guelph N1H 7M1 | (519) 824-6610 |
| Union Energy 485 Silvercreek Pky N #10, Guelph N1H 7K5 | (519) 766-4455 |
| Bowman & Mclean Mechanical 615 Speedvale Ave E, Guelph N1E 6S5 | (519) 836-0390 |
| Ensing Heating & Air Cond Ltd Rr 5 Stn Main, Guelph N1H 6J2 | (519) 837-3871 |