| Business | Phone |
| Amber Heating 7 Grand Ave, Kitchener N2K 1B2 | (519) 743-8400 |
| Hallman & Dittmer Heating 82 Mcintyre Dr #4, Kitchener N2R 1G2 | (519) 748-1160 |
| Hts Engineering Ltd 110 Pinnacle Dr, Kitchener N2P 1C5 | (519) 570-1800 |
| Kitchener Utilities 200 King St W, Kitchener N2G 1A9 | (519) 741-2626 |
| Lormac Mechanical Ltd 104 Waldau Cres, Kitchener N2G 3W7 | (519) 743-9851 |
| Overland Plumbing & Heating 5 Johnston St, Kitchener N2H 6T6 | (519) 744-6841 |
| Regional Mechanical 139 Whitney Pl, Kitchener N2G 2X8 | (519) 576-9577 |
| Beacon Air Systems Inc 20 Grand Ave, Kitchener N2K 1B3 | (519) 741-0885 |
| Summer Breeze Heating & Ac Ltd 88 Shoemaker St, Kitchener N2E 3G4 | (519) 748-0935 |
| Tradewind Heating & Air Cond 31 Manitou Dr #3, Kitchener N2C 1K9 | (519) 893-8020 |
| Trane Kitchener Div 35 Wildlark Cres, Kitchener N2N 3E8 | (519) 570-1118 |
| Triak Mechanical 135 Islington Ave #11, Kitchener N2B 1P6 | (519) 579-7523 |
| United Mechanical 805 Union St, Kitchener N2H 6H9 | (519) 743-7842 |
| United Refrigeration Of Canada 107 Manitou Dr, Kitchener N2C 1L4 | (519) 895-3855 |
| Winstel Installation Ltd 24 Rosemount Dr, Kitchener N2B 1R1 | (519) 743-6256 |
| Carrier Canada Ltd 260 Shirley Ave #2, Kitchener N2B 2E1 | (519) 744-5601 |
| Carrier Canada 260 Shirley Ave, Kitchener N2B 2E1 | (519) 744-5274 |
| Dominion Refrigeration Group 297 Kingswood Dr, Kitchener N2E 1S2 | (519) 579-7620 |
| Dynamic Mechanical 24 Bloomingdale Rd N, Kitchener N2K 1A2 | (519) 742-0100 |
| Arthur's Heating & Cooling 27-51 Paulander Dr, Kitchener N2M 5E5 | (519) 572-2939 |