| Business | Phone |
| Lightworks Electrical Inc 77 Hollins Ln, East Islip 11730 | (631) 581-1545 |
| C T Electric Co Inc 25 3rd Ave, East Islip 11730 | (631) 277-0414 |
| L R Electric 275 Keswick Dr, East Islip 11730 | (631) 277-1144 |
| Shea Electric 61 Wantagh Ave, East Islip 11730 | (631) 277-2902 |
| William J Shea Electric 61 Wantagh Ave, East Islip 11730 | (631) 277-6346 |