| Business | Phone |
| Fairview Heating & Air Cond 100 Brownstone Rd # A, Oakley 94561 | (925) 625-4963 |
| American Cooling Tower 3205 Wells Rd, Oakley 94561 | (925) 684-2081 |
| Buchanan Heating & Air 1033 Main St # C, Oakley 94561 | (925) 778-6060 |
| Bullard's Heating & Air Oakley 94561 | (925) 679-0889 |
| Cypress Air Po Box 215, Oakley 94561 | (925) 684-2046 |
| Jim's Heating & Air Cond Co 3410 Empire Ave, Oakley 94561 | (925) 625-4602 |
| M D Svc Oakley 94561 | (925) 679-8448 |
| Mello's Sheet Metal Inc 1241 Main St, Oakley 94561 | (925) 676-1880 |