| Business | Phone |
| Ainsworth Electric Co 4 Garnett Dr, Ajax L1S 4X9 | (905) 619-6935 |
| Andrews Electrical Svc 128 Rotherglen Rd N, Ajax L1T 1T2 | (905) 428-9141 |
| Germania Electric Ltd 84 Old Kingston Rd, Ajax L1T 2Z8 | (905) 427-2535 |
| K Electric 17 Beaumont Dr, Ajax L1T 1P8 | (905) 427-7038 |
| Mdk Electric 1 Seggar Dr, Ajax L1T 4G5 | (905) 428-7622 |
| Mr Electric Po Box 257 Stn Main, Ajax L1S 3C3 | (905) 426-9422 |
| Nicholson Industrial Electric 785 Westney Rd S #8, Ajax L1S 7G1 | (905) 427-9955 |
| Nova Electrical Contractors 14 Wilce Dr, Ajax L1T 3J6 | (905) 683-4195 |
| Penfold Electric Ltd 89 Clements Rd W, Ajax L1S 4H4 | (905) 428-8660 |
| Rand Electrical Contracting 25 Love Cres, Ajax L1S 4T1 | (905) 683-8299 |
| Roach Electric & Lighting Svc 40 Swanston Cres, Ajax L1S 3J6 | (905) 683-1239 |
| Sage Electric Ltd 717 Finley Ave #1, Ajax L1S 3T1 | (905) 683-6601 |
| Gallagher Electric 33 Beech St, Ajax L1S 1W2 | (905) 427-3092 |
| Direcpower Electrical Ltd 66 Church St S, Ajax L1S 6B3 | (905) 427-4662 |
| Fitzpatrick Electrical Contr 845 Westney Rd S #5, Ajax L1S 3M4 | (905) 686-1661 |