| Business | Phone |
| Excel Electrical Contractors 2021 E Gladstone St, Glendora 91740 | (909) 592-0922 |
| Floyd Auten Electric Inc 403 Fleetwood Pl, Glendora 91740 | (626) 335-4513 |
| Walton Electric Corp 647 W Foothill Blvd, Glendora 91741 | (626) 914-1963 |
| Andrew Electric Glendora 91740 | (626) 335-7777 |
| Becrich Co 507 E Route 66, Glendora 91740 | (909) 931-2400 |
| Budget Electrician 1371 S Bender Ave, Glendora 91740 | (626) 914-7514 |
| Canyon Electric 1966 Kenoma St, Glendora 91740 | (626) 914-2868 |
| Code Electric 1220 Essex St, Glendora 91740 | (626) 963-7640 |
| Cornerstone Electric 1430 S Grand Ave Pmb 411, Glendora 91740 | (626) 442-9468 |
| David Stone Electrical 534 E Route 66, Glendora 91740 | (626) 852-5586 |
| Du Com Electro 1157 E Arrow Hwy # 6, Glendora 91740 | (626) 335-3600 |
| Devco Enterprises Inc 348 W Foothill Blvd, Glendora 91741 | (626) 852-1473 |
| Gorman R Dysthe Electrical Glendora 91740 | (626) 335-9340 |
| Golden Electric Contractors 856 1/2 N Grand Ave, Glendora 91741 | (626) 449-8725 |
| Haines Electric Glendora 91740 | (626) 963-7007 |
| Hot Wire Surveillance 915 W Arrow Hwy, Glendora 91740 | (626) 974-9193 |
| Interstate Electrical Contrs Po Box 688, Glendora 91740 | (626) 914-4000 |
| Joe De Fazio Jr Electrical Svc 876 E Whitcomb Ave, Glendora 91741 | (626) 335-6203 |
| Myers Electric Co 528 W Leadora Ave, Glendora 91741 | (626) 963-4234 |
| R M Electric 411 S Vermont Ave, Glendora 91741 | (626) 852-9548 |
| Richard Rascon Electrical Inc 417 W Foothill Blvd, Glendora 91741 | (626) 962-3993 |
| R V Electric Co Glendora 91740 | (626) 963-7094 |
| Robinson Electric Glendora 91740 | (626) 963-6604 |