| Business | Phone |
| Williams Heating & Cooling 27332 Van Dyke Ave, Warren 48093 | (586) 510-5287 |
| A Aaco Heating & Cooling Warren 48092 | (586) 558-4775 |
| Triple A Heating Co 5403 E 8 Mile Rd, Warren 48091 | (586) 755-1920 |
| Ciamillo Heating & Cooling Co 24913 Schoenherr Rd, Warren 48089 | (586) 756-0180 |
| City Express Heating 4161 E 9 Mile Rd, Warren 48091 | (586) 759-2050 |
| City Wide Heating & Air Cond 14724 Bade Dr, Warren 48088 | (586) 778-2517 |
| Rene Vanassche & Sons Co 21530 Groesbeck Hwy, Warren 48089 | (586) 772-4930 |
| Duct Connection & Sheet Metal 28408 Lorna Ave, Warren 48092 | (586) 576-7600 |
| Gartrell Heating & Cooling 12505 E 9 Mile Rd, Warren 48089 | (586) 757-2757 |