| Business | Phone |
| N H Ross Inc 91 Locust Ave, Islip 11751 | (631) 581-7101 |
| Preferred Plumbing & Heating 1 Beaver Dam Rd, Islip 11751 | (631) 277-3060 |
| Siegfried Plumbing Corp 65 Union Ave, Islip 11751 | (631) 224-7577 |
| Varsity Plumbing & Heating Co Islip 11751 | (631) 581-2222 |
| William S Chew & Sons 198 Smith Ave, Islip 11751 | (631) 581-8940 |