| Business | Phone |
| Ricky Taff Heating & Air Cond Highway 155 N, Gilmer 75644 | (903) 797-6919 |
| Russell's Air Cond & Heating 7764 Fm 3358, Gilmer 75645 | (903) 734-3047 |
| A & A Svc Co 208 Crawford St, Gilmer 75644 | (903) 797-6343 |
| Charlie G's Refrigeration & Ac Gilmer 75645 | (903) 790-5101 |
| Ken's Air Conditioning 6948 Beaver Bend Rd, Gilmer 75645 | (903) 734-7725 |
| Mission Heating & Ac 16844 Periwinkle Rd, Gilmer 75644 | (903) 762-6109 |