| Business | Phone |
| California Heating & Air Cond Po Box 5054, San Francisco 94083 | (650) 438-1195 |
| Air Flow Pros Heating & Air Conditioning 308 30th St, San Francisco 94131 | (415) 400-5140 |
| Al's Heating Repairs Suite 5608, San Francisco 94083 | (415) 661-8488 |
| Schmitt Heating and Cooling 34 Woodward Street, San Francisco 94103 | (415) 689-7849 |
| Schmitt Heating Co., Inc. 34 Woodward St, San Francisco 94103 | (415) 522-0966 |