| Business | Phone |
| David Braune Air Cond & Htg 1301 Aspen, Lockhart 78644 | (512) 398-9656 |
| Lindsey Refrigeration 1516 E Fm 20, Lockhart 78644 | (512) 398-6018 |
| Lockhart Air Conditioning 108 Reynolds St, Lockhart 78644 | (512) 620-0166 |
| W F Haun & Son Heating-Air 218 S Main St, Lockhart 78644 | (512) 398-2122 |
| Zaragoza's Heating Ac Po Box 776, Lockhart 78644 | (512) 376-2879 |
| Aritek Mechanical Inc 1087 Seawillow Rd, Lockhart 78644 | (512) 376-7001 |
| Colley-Aire 1411 S Main St, Lockhart 78644 | (512) 398-3750 |