| Business | Phone |
| Associated Thermodynamics Co 1430 S Grand Ave, Glendora 91740 | (626) 967-1722 |
| Canyon Air Systems Inc 2247 Lindsay Way, Glendora 91740 | (909) 592-8114 |
| Crown Heating & Air Cond 547 S Loraine Ave, Glendora 91741 | (626) 357-3221 |
| Cypress Heating & Air Cond 547 S Loraine Ave, Glendora 91741 | (909) 592-6715 |
| A & M Air Conditioning Heating 123 E Olive St, Glendora 91740 | (626) 359-6637 |
| Aurelio Heating & Air Cond Po Box 1592, Glendora 91740 | (626) 963-3580 |
| Canyon Air Svc Inc 2247 Lindsay Way, Glendora 91740 | (909) 592-8114 |
| Comfort Zone Heating & Ac 338 Temmera Ln, Glendora 91740 | (626) 695-5405 |
| Cas 525 Parker Dr, Glendora 91741 | (626) 335-1342 |
| Dan's Electric Glendora 91740 | (626) 963-9893 |
| Crown Heating & Air 547 S Loraine Ave, Glendora 91741 | (626) 258-0530 |
| Cypress Heating & Air Cond 547 S Loraine Ave, Glendora 91741 | (626) 963-9810 |
| Glenn Heating & Air 1430 S Grand Ave Pmb 400, Glendora 91740 | (626) 594-9070 |
| Four Seasons Air Conditioning 307 S Vermont Ave # D, Glendora 91741 | (626) 335-5496 |
| Innovative Air 409 N Elwood Ave, Glendora 91741 | (626) 963-0042 |
| J C Heating & Air Cond 243 S Vermont Ave, Glendora 91741 | (626) 963-1552 |
| Jordanair Heating & Air Cond 129 S Hacienda Ave, Glendora 91741 | (626) 963-3313 |
| King Unlimited Glendora 91740 | (626) 914-3605 |
| Lin's Air Conditioning Heating 611 W Duell St, Glendora 91740 | (626) 963-5860 |
| Mediterranean Heating & Air 21450 Conogan Park, Glendora 91740 | (626) 963-2695 |
| Nes Mechanical Systems 424 S Vermont Ave, Glendora 91741 | (626) 914-5696 |
| Pyle Heating & Air Cond 639 E Mountain View Ave, Glendora 91741 | (626) 335-3764 |
| R E Air 508 E Ada Ave, Glendora 91741 | (626) 914-7069 |
| R & F Heating & Air Condition 2031 E Gladstone St # G, Glendora 91740 | (909) 592-5266 |
| R & F Inc Po Box 796, Glendora 91740 | (626) 914-5491 |
| R S Air Conditioning 718 E Route 66, Glendora 91740 | (626) 914-4408 |
| Twenty-Five Dollar Rooter 147 W Route 66 Pmb 664, Glendora 91740 | (626) 969-1414 |