| Business | Phone |
| Beard Comfort Systems 6141 Lake Rd, Charlotte 28227 | (704) 545-6539 |
| Blackmon Services Inc 610 Mcninch St, Charlotte 28208 | (704) 364-9009 |
| United Mechanical Corp 2811 Central Ave, Charlotte 28205 | (704) 374-1857 |
| Brady Services Inc 801 Atando Ave # D, Charlotte 28206 | (704) 295-4944 |
| Charlotte Temperature Controls 1705 Orr Industrial Ct # A, Charlotte 28213 | (704) 509-0707 |
| Gordon Mechanical Heating 9300 Sardis Forest Dr, Charlotte 28270 | (704) 841-9133 |