| Business | Phone |
| All Seasons Heat & Air 1510 N Liberty Hill Rd, Morristown 37814 | (423) 581-8669 |
| Twin Lakes Home Specialists Morristown 37814 | (423) 587-5591 |
| Brians Heating & Air Condition Morristown 37814 | (423) 581-8522 |
| Clark's Heating & Air Cond Morristown 37814 | (423) 581-7600 |
| Building Automation & Svc Co 1111 Gateway Rd, Morristown 37813 | (423) 581-1990 |
| Dearing Mechanical Heat & Air 3527 Dedra St, Morristown 37814 | (423) 587-1916 |
| Pro Air 3815 W Andrew Johnson Hwy, Morristown 37814 | (423) 585-0044 |
| Renner Heating & Cooling 2401 W Andrew Johnson Hwy, Morristown 37814 | (423) 587-4940 |
| Price & Price Mechanical 1111 Gateway Rd, Morristown 37813 | (423) 587-2665 |
| Mounts Mechanical Contractors Morristown 37814 | (423) 587-0305 |
| Lynch Heating & Air Cond 5270 Cub Cir, Morristown 37814 | (423) 587-0900 |
| Kna Svc Heating A/C & Refrig Morristown 37814 | (423) 587-4774 |
| Jones Heating & Air Cond 4811 Ray St, Morristown 37814 | (865) 475-9536 |