| Business | Phone |
| Boiler Bill Heating & Plumbing Ronkonkoma 11779 | (631) 580-3873 |
| Burner King Inc 2221 5th Ave, Ronkonkoma 11779 | (631) 738-9279 |
| Eastern Industrial Svc 860 S 2nd St # B, Ronkonkoma 11779 | (631) 471-7205 |
| Striper Mechanical Inc 1860 Pond Rd, Ronkonkoma 11779 | (631) 588-6091 |
| Teamco Mechanical Inc 1951 Ocean Ave # 4, Ronkonkoma 11779 | (631) 981-0000 |
| Universal Temperature Controls 1749 Julia Goldbach Ave, Ronkonkoma 11779 | (631) 471-9180 |