| Business | Phone |
| Duffy's Plumbing & Heating 50 Oak Dr, Sag Harbor 11963 | (631) 725-0716 |
| Paul's Plumbing & Heating 384 Division St, Sag Harbor 11963 | (631) 725-1801 |
| Harbor Plumbing & Heating Clay Pits Rd, Sag Harbor 11963 | (631) 725-3394 |
| J Pilinko Plumbing & Heating 41 Ridge Rd W, Sag Harbor 11963 | (631) 725-3554 |
| Schiavoni Fuel Oil Heating 64 Jermain Ave, Sag Harbor 11963 | (631) 725-0466 |