| Business | Phone |
| Advanced Air Svc Inc 18 Stonewall, Hattiesburg 39402 | (601) 549-0046 |
| Air Maintenance Heating & Air Po Box 1655, Hattiesburg 39403 | (601) 264-8890 |
| Batchelor's Service Hattiesburg 39401 | (601) 582-2788 |
| Bosarge Service Co Hattiesburg 39402 | (601) 264-2295 |
| Bowman Heating & Air Cond 48 Bowman Rd, Hattiesburg 39401 | (601) 582-2336 |
| Essco Air Cond & Heating 1502 N Main St, Hattiesburg 39401 | (601) 545-1880 |
| Gandy Electric 2130 Glendale Ave, Hattiesburg 39401 | (601) 544-8148 |
| Harrington & Harrington 1084 Bonhomie Rd, Hattiesburg 39401 | (601) 583-4913 |
| Henderson Co Heating & Air Po Box 16444, Hattiesburg 39404 | (601) 268-7007 |
| Howard L Tucker Mechanical 199 Sullivan Kilrain Rd, Hattiesburg 39402 | (601) 582-3556 |
| Hub Refrigeration & Fixture Co 2810 Edwards St, Hattiesburg 39401 | (601) 582-9964 |
| Temperature Control Svc 536 J C Burt Rd, Hattiesburg 39401 | (601) 549-5661 |
| Williamson Heating & Air Contr 400 River Rd, Hattiesburg 39401 | (601) 584-8049 |
| Wilson Air Conditioning & Heat Hattiesburg 39402 | (601) 261-3706 |
| South Central Heating & Air 5542 Highway 42, Hattiesburg 39401 | (601) 584-8991 |
| Square D Metal Co 1410 Stanley St, Hattiesburg 39401 | (601) 583-9985 |
| Sumrall Heating & Air Cond 488 Rawls Springs Loop Rd, Hattiesburg 39402 | (601) 584-8892 |
| Pine Belt Heating & Air Hattiesburg 39402 | (601) 299-0011 |
| R & Sa/C & Electric 305 N 21st Ave, Hattiesburg 39401 | (601) 582-8805 |
| Residential Refrigeration Hattiesburg 39401 | (601) 408-2377 |
| Oak Grove Heating & Air Cond 2855 Oak Grove Rd, Hattiesburg 39402 | (601) 268-3486 |
| Odom's Heating & Air Hattiesburg 39402 | (601) 296-6466 |
| Patrick Heating & Air 183 Patrick Rd, Hattiesburg 39401 | (601) 544-0210 |