| Business | Phone |
| A & A Classic Electric Inc 98 Oxhead Rd, Centereach 11720 | (631) 737-2950 |
| Majestic Electric 25 Taylor Ave, Centereach 11720 | (631) 732-7308 |
| Owen's Electric Inc 67 Pleasant Ave, Centereach 11720 | (631) 981-8935 |
| Tri Tech Electric Corp 521 Park Ave, Centereach 11720 | (631) 580-6060 |
| Zap Electric Systems 1759 Middle Country Rd # L, Centereach 11720 | (631) 737-2377 |