| Business | Phone |
| A R Milne Electric 606 Colby Dr #C, Waterloo N2V 1A2 | (519) 884-3721 |
| B J Electric 98 Regina St N, Waterloo N2J 3A9 | (519) 885-5030 |
| Gosen Electric Ltd 215 Bathurst Dr #1, Waterloo N2V 2B2 | (519) 885-2390 |
| Harold Stecho Electric 100 Rankin St #1, Waterloo N2V 1V9 | (519) 746-0047 |
| Jim Collison Electric Inc 427 Albert St, Waterloo N2L 3V2 | (519) 884-6870 |
| Kinetic Electric Ltd 443 Brentcliffe Dr, Waterloo N2T 2J6 | (519) 746-8657 |
| Ron Hoy Electric Ltd 105 Rankin St #3, Waterloo N2V 1W2 | (519) 746-2888 |
| Bali Electric 97 Dover St, Waterloo N2J 1Z2 | (519) 743-9815 |
| Sci Contractors Inc 245 Bathurst Dr, Waterloo N2V 2E4 | (519) 886-5030 |
| Shantz & Brubacher Electric 55 Austin Dr #3, Waterloo N2L 3Y2 | (519) 746-5955 |
| Sonnenburg Electrical Svc Ltd 124 Partridge Pl, Waterloo N2V 1S6 | (519) 747-9040 |
| Dotrol Services 247 Union St E, Waterloo N2J 1E3 | (519) 571-1121 |
| Tds Technologies Inc 55 Rankin St, Waterloo N2V 1W1 | (519) 884-5500 |
| Enasco Limited 516 Erbsville Rd, Waterloo N2J 3Z4 | (519) 884-2330 |
| Erbsville Electrical Contrs 729 Erbsville Rd, Waterloo N2J 3Z4 | (519) 746-2022 |
| Gary Kraemer Electric 453 Eastbridge Blvd, Waterloo N2K 3Y4 | (519) 884-8759 |