A1 Dimas Plumbing, Air Conditioning & Heating Repair

The majority of reviews describe responsive, skilled technicians who communicated clearly, arrived promptly, and completed jobs fully — including notable examples of technicians going out of their way to save customers money (e.g., checking warranty before replacing a control board, replacing a simple part rather than upselling a water heater). Pricing was generally described as reasonable and u... Read more

The majority of reviews describe responsive, skilled technicians who communicated clearly, arrived promptly, and completed jobs fully — including notable examples of technicians going out of their way to save customers money (e.g., checking warranty before replacing a control board, replacing a simple part rather than upselling a water heater). Pricing was generally described as reasonable and upfront across multiple reviews. However, one detailed 1-star review raises a serious professionalism concern involving an undisclosed charge, an aggressive response to a billing dispute, and an alleged racist remark — this materially drags down the professionalism and pricing scores. The review pool spans from 2009 to 2024, meaning many reviews are significantly outdated and may not reflect current service quality. The business also appears to operate under multiple names across reviews (A1 Plumbing Heating & AC, San Dimas Plumbing, Diver Dan's Plumbing), which limits the reliability of treating this as a single contractor profile. Read less