| Business | Phone |
| Patuxent Refrigeration Lanham 20706 | (301) 262-3898 |
| Airco Ac Htg & Refrig Svc 9412 Copernicus Dr, Lanham 20706 | (301) 552-5300 |
| Capital Climate Svc 8913 Hilton Hill Dr, Lanham 20706 | (301) 577-5140 |
| Crw Mechanical Inc 5807 Ellerbie St, Lanham 20706 | (301) 918-0056 |