| Business | Phone |
| Big O Electric Lancaster 17602 | (717) 295-3278 |
| Fred H Brandt 428 Poplar St, Lancaster 17603 | (717) 393-9816 |
| Vick's Electric 1910 Old Philadelphia Pike, Lancaster 17602 | (717) 394-7736 |
| Butler Mechanical Svc 2465 Old Philadelphia Pike, Lancaster 17602 | (717) 394-9501 |
| United Electric Svc 927 Driver Ave, Lancaster 17601 | (717) 898-3289 |
| Thomas Electrical Svc 1961 Heatherton Dr, Lancaster 17601 | (717) 569-8837 |
| Criswell Electric 756 Oxford Rd, Lancaster 17601 | (717) 285-2990 |
| Stephen Daniels Electrical 2324 Marietta Ave, Lancaster 17603 | (717) 299-3135 |
| Crork Electric 730 E King St, Lancaster 17602 | (717) 293-0413 |
| D & H Electrical Constr Co 604 Ruby St, Lancaster 17603 | (717) 393-7251 |
| De Sousa Electrical Svc Lancaster 17601 | (717) 371-1392 |
| Dean's Electric 3248 Marietta Ave, Lancaster 17601 | (717) 285-4545 |
| Elco Services Corp 1671 Lincoln Hwy E, Lancaster 17602 | (717) 209-7100 |
| Sargent Electric Co 2050 State Rd, Lancaster 17601 | (717) 898-9812 |
| Schauer & Harnish 900 W Fairway Dr, Lancaster 17603 | (717) 394-4728 |
| H B Frazer & Co Inc 780 Eden Rd, Lancaster 17601 | (717) 560-2841 |
| Prospect Valley Electric Lancaster 17601 | (717) 569-2290 |
| Red Rose Construction 518 W Grant St, Lancaster 17603 | (717) 207-0307 |
| Hayden George Electric 750 E King St, Lancaster 17602 | (717) 207-0181 |
| Penn State Elec Supply Co 211 W James St, Lancaster 17603 | (717) 509-2700 |
| Jack M Clare & Son 601 Euclid Ave, Lancaster 17603 | (717) 394-1608 |
| Pagoda Electrial Inc 720 N Prince St, Lancaster 17603 | (717) 735-0680 |
| Joyce Electric Inc 1668 Manheim Pike, Lancaster 17601 | (717) 569-1616 |
| Kroll Electric Co 679 E Ross St, Lancaster 17602 | (717) 397-7754 |
| Kurtz Electric 422 Beaver St, Lancaster 17603 | (717) 397-1614 |
| Mitchell Electric 645 Emerald Dr, Lancaster 17603 | (717) 394-7216 |
| Lancaster Electric Inc 679 E Ross St, Lancaster 17602 | (717) 397-8154 |
| Lapp Electrical Svc Inc 219 Witmer Rd, Lancaster 17602 | (717) 392-0804 |
| Lease Electrical Mechanical 731 Hathaway St, Lancaster 17601 | (717) 285-2588 |
| John E Lefever 47 Riverside Ave, Lancaster 17602 | (717) 291-1982 |
| Lenni Electric Inc Centerville Rd, Lancaster 17601 | (717) 299-5821 |
| Lowry Electric 126 N Duke St, Lancaster 17602 | (717) 672-0760 |
| M A Bullard Communications 1405 Vermont Ave, Lancaster 17603 | (717) 295-1808 |
| Witmer's Electrical Svc 1642 Lincoln Hwy E, Lancaster 17602 | (717) 392-3410 |
| Yeager Electric 830 N Plum St, Lancaster 17602 | (717) 393-7153 |