| Business | Phone |
| Air Certified Hvac 3593 Galdway Dr, Snellville 30039 | (404) 786-9278 |
| Coolsmith Mechanical Inc 4030 Tanglewood Rd, Snellville 30039 | (770) 736-2922 |
| Heritage Mechanical Contrs Inc 3215 Industrial Way, Snellville 30039 | (770) 979-0300 |
| Specialty Mechanical Svc Inc 3625 Hewatt Ct, Snellville 30039 | (770) 982-5424 |