| Business | Phone |
| Yankee Electric Construction 150 Carter Henry Dr, Fairfield 6824 | (203) 259-5499 |
| All Electric Fairfield 6824 | (203) 254-2129 |
| Waters Electric 40 Stillson Pl, Fairfield 6824 | (203) 333-8770 |
| Bartlett Electric 382 Reef Rd, Fairfield 6824 | (203) 319-1850 |
| Blaine Electric Fairfield 6824 | (203) 259-5716 |
| Cable Electric 66 Tuller Rd, Fairfield 6825 | (203) 374-5125 |
| Sherwood Electric 5 Wellner Dr, Fairfield 6825 | (203) 371-4209 |
| Salvioli Electric 355 Lalley Blvd, Fairfield 6824 | (203) 259-0077 |
| Sam Kristi Electric 338 Villa Ave, Fairfield 6825 | (203) 335-8817 |
| Patriot Electric & Alarm 235 Lynnbrook Rd, Fairfield 6825 | (203) 367-2053 |
| Fairfield County Electric Co 25 Warren Ave, Fairfield 6825 | (203) 332-1722 |
| Miele Electric Fairfield 6824 | (203) 256-2346 |
| Mauro's Petroleum Svc Inc 84 Cummings Ave, Fairfield 6824 | (203) 259-7101 |
| Holcomb Electric 75 Saint Marc Ln, Fairfield 6824 | (203) 255-8041 |
| M P Electric 30 Flushing Ave, Fairfield 6825 | (203) 372-9644 |
| Maklari Electric 66 Valley Cir, Fairfield 6825 | (203) 374-8634 |
| Lazor Electric 73 Eastfield Dr, Fairfield 6825 | (203) 372-4499 |
| Imbrogno Electric 168 Tuckahoe Ln, Fairfield 6824 | (203) 366-3257 |
| Imperial Electric 1616 Post Rd, Fairfield 6824 | (203) 331-9235 |
| Keiser Electric Contracting 18 Carthage St, Fairfield 6825 | (203) 384-0024 |
| Keith Brown Electrical Contr 197 Fairland Dr, Fairfield 6825 | (203) 336-9806 |
| Kolbusz Electric 203 Nepas Rd, Fairfield 6825 | (203) 255-0323 |
| Krozer Electric 628 Katona Dr, Fairfield 6824 | (203) 368-4747 |
| J & B Electric 386 Cascade Dr, Fairfield 6825 | (203) 319-0458 |
| Johnson Electric North America 682 Commerce Dr, Fairfield 6825 | (203) 336-5064 |