| Business | Phone |
| Dun Rite Piping & Heating 5021 Avenue D, Brooklyn 11203 | (718) 629-2650 |
| Flushing Boiler & Welding Co 8720 Ditmas Ave, Brooklyn 11236 | (718) 463-1266 |
| Big Apple Burner Boiler 1751 Stillwell Ave, Brooklyn 11223 | (718) 259-3883 |
| Parkway Boiler Repair & Wldng 8720 Ditmas Ave, Brooklyn 11236 | (718) 232-3600 |
| Phoenix Energy Management Inc 2328 Neptune Ave, Brooklyn 11224 | (718) 372-6103 |