| Business | Phone |
| A & B Heating & Cooling Contra 5700 Shannondale Rd, Knoxville 37918 | (865) 687-3090 |
| Air Pro 410 E Magnolia Ave, Knoxville 37917 | (865) 546-7277 |
| Zachary Heating & Air Svc 2509 Vincinda Cir, Knoxville 37924 | (865) 522-3480 |
| Volunteer Mechanical Inc 527 Callahan Dr, Knoxville 37912 | (865) 689-8008 |
| B & B Htg & Air Conditioning 11020 Kingston Pike, Knoxville 37934 | (865) 966-0059 |
| B & W Heating & Air Cndtnng 912 N Campbell Station Rd, Knoxville 37932 | (865) 966-6734 |
| B & W Heating & Air Cond Inc Knoxville 37932 | (865) 966-6734 |
| Smith's Heating & Air Cond 3541 Neal Dr # A, Knoxville 37918 | (865) 922-2874 |
| Chaffee Climate Control 5725 Ball Camp Pike, Knoxville 37921 | (865) 602-3552 |
| Chancey & Reynolds Inc 614 Van St, Knoxville 37921 | (865) 525-5076 |
| Concord Heating & Air Cond Knoxville 37932 | (865) 966-3662 |
| R & M Climate Control 3111 Nw Park Dr, Knoxville 37921 | (865) 938-9474 |
| Finchum Refrigeration Htg Inc Knoxville 37917 | (865) 637-4259 |
| Newman Heating & Air Cond 2708 Voltz Ln, Knoxville 37914 | (865) 522-0336 |
| Norman Heating & Air 5408 Tenbury Ln, Knoxville 37921 | (865) 531-1029 |
| Northgate Heating & Air 6807 Pleasant Ridge Rd, Knoxville 37921 | (865) 938-0670 |
| Northgate Parts 6807 Pleasant Ridge Rd, Knoxville 37921 | (423) 626-2837 |
| Mize Heating & Air Inc 4611 Central Avenue Pike # K, Knoxville 37912 | (865) 687-9580 |
| Mason Heating & Air 2501 Hoitt Ave, Knoxville 37917 | (865) 546-8952 |
| Metro Heating & Air Inc 1224 Minnesota Ave, Knoxville 37921 | (865) 523-4375 |
| Henshaw's Heating & Ac Inc 1512 Wright St, Knoxville 37917 | (865) 525-8389 |
| Knoxville Heating & Air 135 Lynnwood Dr, Knoxville 37918 | (865) 686-4774 |