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Find Water heater repair or service pros in Diamond Bar

Avatar for Payless Water Heaters & Plumbing
Payless Water Heaters & Plumbing
4.1(
130
)

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"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."
New Tankless Water Heater Installation
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+19

Response time8 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for McLay Services
McLay Services
4.8(
275
)

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 1978

Free estimates

Emergency services offered

"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."
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+5

32 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for RT Olson Plumbing, Heating and Air Conditioning
RT Olson Plumbing, Heating and Air Conditioning
4.5(
217
)

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"Job went great! Bob gave me a very competitive estimate for the Re-Pipe and went the extra mile in recommending materials for the walk on shower I had discussed with him. I accepted his bid and the work was scheduled: replace the main water line from the meter to the house, Re-Pipe all hot and cold water lines inside the home, demo the existing master tub & shower and replace with walk in shower, repair all drywall and ceiling access points and texture as required. Job went great! The main line and Re-Pipe were done in the 4 days promised. The on-site supervisor, Rudy, was awesome and made sure everything was done perfectly. The walk in shower was delayed a day due to shopping damages to the product, but was quickly resolved by the crew as they tracked down an available replacement. A few unexpected problems came up but were quickly resolved to my complete satisfaction. I will keep their name handy for any future plumbing needs."
New AC Installation
Tankless water heater
New Thermostat
Shower head system installation
Helping customer with new water filtration system

+57

Response time9 hrs
1 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for HARMONY ELECTRIC PLUMBING & AIR INC
HARMONY ELECTRIC PLUMBING & AIR INC
4.9(
25
)

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"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."
552 neighbors recently requested a quote
Recommended by52%of homeowners
Avatar for Orange Independent Plumbing Services
Orange Independent Plumbing Services
4.8(
316
)

Serving Diamond Bar, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Emergency services offered

Credit card accepted

"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!"
Response time3 hrs
Response rate85%
231 neighbors recently requested a quote
Avatar for RC's Plumbing
RC's Plumbing
4.6(
33
)

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2013

Free estimates

Small jobs welcome

"RCâ s Plumbing is absolutely the best! Robert, the owner of RCâ s Plumbing, replaced a leaking 75-gallon water heater (with recirculating pump) just yesterday and his quality of work from start to finish was truly superb! His attention to detail and thoughtfulness throughout every step of the project, including the mitigation of mold and reinforcing the raised platform that the heavy (approx. 620-lbs, filled) water heater sits on, is honestly second to none. Something that I also appreciated and valued about RCâ s Plumbing and Robert is how he takes his time to answer any and all questions about the project, both during and after the project. After completion of the project, Robert summarized everything that was done, showed us how to operate the various components (e.g., new valves, gas sediment trap, pressure release valve, etc.) and also shared information about maintenance of our new 75-gallon water heater and registration for warranty. Robert and his technician assistant (his son) also cleaned up the entire work area before leaving. My wife and I could not be more happy! One final but very important noteâ there are many other plumbers out there competing for your project. When it comes to a water heater replacement project, whether it be a common gas water heater with tank storage or a tankless gas or all-electric water heater, many plumbers only offer a specific brand of water heater they like to install. You donâ t really get a choice. With Robert and RCâ s Plumbing, I received an entirely different and genuinely appreciated and valued experience that many other plumbers would not provideâ being able to choose/select the make and model of the water heater you want for your house without paying an inflated price for the project! After doing some research regarding the make and model of water heater I wanted for my home, l shared the information with Robert. He was completely respectful and open to my choice/selection of water heater and without hesitation, agreed to call the plumbing supply houses he normally use to track down the water heater I wanted. When he learned the local supply houses did not carry the specific model I sought, Robert did not hesitate to special order the specific model for me. When the water heater was delivered to RCâ s Plumbing, Robert called to schedule the installation appointment. As stated earlier, my wife and I could not be more happy with the completed project. We highly recommend RCâ s Plumbing without hesitation for all your plumbing needs! Thank you again, Robert, for the super job and you will have us as customers for life! Tom"
Old 40 Gallon Water Heater
Replaced This Sink
La Puente,  Water Heater
New Sink and faucet
New valves and garbage disposal

+3

Response time11 hrs
Response rate95%
Recommended by92%of homeowners
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FAQs for water heater repair or service projects in Diamond Bar, CA

Warning signs include fluctuating water temperatures, a pilot light that repeatedly goes out, unusual noises from the tank, or complete heating failure. You might also detect a rotten egg smell, indicating a potential gas leak, or notice water that never reaches the proper temperature. If your water heater is over eight years old and displaying these symptoms, the gas valve is a likely culprit. Professional inspection is recommended, especially if gas odors are present.

Water heater gas valves are not universally interchangeable. Each valve must match your specific water heater's make, model, and specifications. Important compatibility factors include gas type (natural gas vs. propane), BTU rating, connection types, and physical dimensions. Using an incorrect valve can result in poor performance, premature failure, or dangerous gas leaks. Always consult your water heater's documentation or a professional plumber to identify the appropriate replacement valve for your unit.

The Diamond Bar, CA homeowners’ guide to water heater repair or services

From average costs to expert advice, get all the answers you need to get your job done.