| Business | Phone |
| A C Electric Llc 43 Valley Dr, Naugatuck 6770 | (203) 723-2430 |
| Aerial Lighting & Electric Inc 26 Hotchkiss St, Naugatuck 6770 | (203) 720-0900 |
| Technical Electrical & Comms 35 Monahan Ln, Naugatuck 6770 | (203) 720-0587 |
| Suracco Mechanical Naugatuck 6770 | (203) 720-3831 |
| Schmidt Electric Llc 68 Radnor Ave, Naugatuck 6770 | (203) 723-1082 |
| Scr Electric Inc 228 Lewis St, Naugatuck 6770 | (203) 729-8274 |
| Current Electrical Systems 26 Hillcrest Ave, Naugatuck 6770 | (203) 723-7008 |
| Dan's Electric Svc Naugatuck 6770 | (203) 723-7583 |
| Eastern Electrical Contractors 440 Maple Hill Rd, Naugatuck 6770 | (203) 723-2470 |
| Expert Electric 55 Cherry St, Naugatuck 6770 | (203) 720-0026 |
| Nutmeg Electric Inc 35 Elm St, Naugatuck 6770 | (203) 723-4213 |
| Johnson Electric Co 530 Field St, Naugatuck 6770 | (203) 729-7639 |