| Business | Phone |
| California Comfort Systems Usa 9750 Distribution Ave, San Diego 92121 | (760) 738-0233 |
| A O Reed & Co 4777 Ruffner St, San Diego 92111 | (858) 565-4131 |
| Advanced Mechanical Systems San Diego 92111 | (858) 277-5752 |
| Southland Industries 8444 Miralani Dr, San Diego 92126 | (858) 693-3900 |
| California Filter Svc 650 Robinson Ave, San Diego 92103 | (760) 510-8064 |
| R M Newman Co 17389 Caminito Canasto, San Diego 92127 | (858) 487-3495 |
| Control Contractors Inc 6640 Lusk Blvd # A101, San Diego 92121 | (858) 554-1814 |