| Business | Phone |
| Aes Granite Ridge 21 N Wentworth Ave, Londonderry 3053 | (603) 432-9114 |
| Audio Video Solutions Po Box 596, Londonderry 3053 | (603) 432-9867 |
| Custom Design Electric Inc Londonderry 3053 | (603) 437-8059 |
| Electric On Line 50 Nashua Rd, Londonderry 3053 | (603) 437-1059 |
| Gerard A La Flamme Inc 100 Harvey Rd, Londonderry 3053 | (603) 432-0878 |
| Laroche Electrical Contractors 16 Wiley Hill Rd, Londonderry 3053 | (603) 898-2407 |
| Mouilison North Corp 330 1/2 Kelly Ave, Londonderry 3053 | (603) 647-4521 |
| Nusbaum Electric 12a Jefferson Dr, Londonderry 3053 | (603) 434-2035 |
| O'Keefe Electric 547 Mammoth Rd, Londonderry 3053 | (603) 437-7003 |
| Parker's Electric Svc 4 Reed St, Londonderry 3053 | (603) 434-6284 |
| Wagner Electric Londonderry 3053 | (603) 421-2922 |