Get matched with top tankless water heater repair pros in Diamond Bar, CA

"Did a $59 consult only. Turned out the cost of repairing the old heater was almost as much as a new one, so we got a new one, and handled the install ourselves. Luis B was great, knowledgeable, friendly, didn't try to upcharge just to sell a heater, which we appreciated. Gave us an honest evaluation, several options, and was right on time. I will say, though, that the company failed to call me when he was on his way... not a big deal. All in all a good experience."

"The repair guy came within the estimated time and resolved my water heater issue, no charge."

"I bought a hot water heater to replace the one that calcified due to Anaheim water. Technicians : Marty, Parker and Shane were excellent. I would recommend this company RT Olsen Plumbing Heating and Air Conditioning. They took out my old water heater and halled it away. The new water heater was installed with no problems. I Gave this company and there excellent crew 5 Star"

"The plumber spent a lot of time just trying to figure out the source of the hidden leak. He had a lot of patience. The quality of work was good as was the price. I would definitely hire them again."

"Robert was good to work with and accommodating. We had to move a water heater for a week then install the new one. I will use him again."

"It went wonderful as usual. Chad is the wonderful and I can always count on McLay Services. They are just the best. I also use them for my heater and A/C and they are excellent and very fair. I highly recommend them."

"Reuben was right on time and did exactly what he promised. One thing I know about people is whether they are caring or not, and certainly Reuben is one caring individual. I was concerned about a water heater replacement and he said that he wanted to see if he could repair it before we even begin to talk about a replacement. He was able to obtain the materials and put in a new hot water pipe and fittings for the water heater and WOW - hot water! By the way, he has tremendous respect for Vets, police and fire and active duty and gave me a great discount. He's on my permanent list for plumbing! Thank you Reuben for a job well done!"

"They called us quickly and got a plumber out within a few days. Super thorough - tested all pipes and water sources to diagnose the problem. They were able to perform maintenance on most bathrooms the same day and improve the water temperature in our showers. Gave helpful, non-biased advice on potential further plumbing improvements. We will likely call this company again for any and all future plumbing needs."

"Wes @ Rapid Rescue Rooter & Plumbing did an amazing job fixing our plumbing issues and even gave us advice on how to properly care for our drains and system to avoid problems in the future. Very, much appreciated!! Wes was quick to return our call and schedule an appointment that worked best for us. I also scheduled for work to be done at my parent’s home, knowing they would be in knowledgeable, trustworthy hands! He is definitely highly recommended! Thanks so much Wes!"

"Mike was great! He was friendly and knowledgeable. He let me know all the options for replacing my water heater and did the work quickly and neatly. Will definitely be calling him again!"