| Business | Phone |
| A Fullerton 92831 | (714) 871-1414 |
| A A Plumbing-Tarnowske & Sons 158 Melville Dr, Fullerton 92835 | (714) 773-1867 |
| A Aabco Rescue Rooter Fullerton 92832 | (714) 525-7557 |
| A-A Abalene Air Conditioning 814 W Commonwealth Ave, Fullerton 92832 | (714) 871-6772 |
| Affordable Water Heaters Inc Fullerton 92832 | (714) 525-5720 |
| Alegre Plumbing 114 W Elm Ave, Fullerton 92832 | (714) 441-0991 |
| American Residential Svc Fullerton 92831 | (714) 738-1911 |
| Asap Plumbing & Rooter Svc 616 Imperial Hwy, Fullerton 92835 | (714) 229-9183 |
| Code Plus Plumbing 1062 Cerritos Dr, Fullerton 92835 | (714) 526-9341 |
| County Wide Plumbing Fullerton 92835 | (714) 992-8060 |
| F C Plumbing Fullerton 92835 | (714) 992-5530 |
| Lang Plumbing & Air 212 Marion Blvd, Fullerton 92835 | (714) 525-3524 |
| Rick's Plumbing 1900 Rolling Hills Dr, Fullerton 92835 | (714) 990-3634 |
| R & R Plumbing Heating 1331 El Mirador Dr, Fullerton 92835 | (714) 525-5102 |
| Mr. Drain Plumbing 537 W Valencia Dr, Fullerton 92832 | (714) 276-8322 |