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Find Water heater repair or service pros in Diamond Bar

Avatar for Payless Water Heaters & Plumbing
Payless Water Heaters & Plumbing
4.2(
131
)
Water Heater - Repair or Service

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
Additional Photos
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+19

Response time8 hrs
Response rate100%
1 neighbors recently requested a quote
Avatar for Western Rooter & Plumbing
Western Rooter & Plumbing
4.8(
171
)
Water Heater - Repair or Service

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 1981

Free estimates

Emergency services offered

"Daniel arrived on time, bathroom tub work was estimated and confirmed to repair to stopped leaking faucets. Also had toilet valve replaced. Very pleased with work done. Will use this service again.?"
Ruben installs a new drainage system under a customers home. Working in a crawl space is rough, but we do what is needed.
Backing up? Got roots? Blast those roots out with a Hydro Jetter! We use a wart hog nozzle that combines controlled rotation with a unique 8 jet cutting configuration optimized for removing roots. It’s better with a jetter! Call us! We got this! ??
Sewer Line Camera
No drain clog too big or small, Western Rooter covers them all!
Justin clearing a Kitchen sink back-up after the Memorial holiday.
HALO 5 whole house water filtration system.

+542

Response time12 hrs
Response rate100%
11 neighbors recently requested a quote
Avatar for McLay Services
McLay Services
4.8(
281
)
Water Heater - Repair or Service

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 1978

Free estimates

Emergency services offered

"I had a great experience with your team. They serviced and repaired my mini-split and central They serviced my A/C systems, added refrigerant, and made sure everything was working properly before leaving. Mike was thorough, professional, knowledgeable, and did quality work. I highly recommend this company."
Additional Photos
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+3

83 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Rapid Rescue Rooter & Plumbing
Rapid Rescue Rooter & Plumbing
5.0(
13
)
Water Heater - Repair or Service

Serving Diamond Bar, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"My water main went out on Christmas Eve leaving me without water, Wes offered to come out on Christmas day to make the repairs. I told him we could wait until the next day, he arrived on time, dug up my very rocky soil to get to the water main and made the repairs. The customer service was great and he explained everything to me every step of the way. The cost was also reasonable. I have asked that he return to make an additional repair later this week. He definitely has a repeat customer."
Old plumbing
Beautiful Bathroom Remodel
Beautiful Bathroom Remodel
Beautiful Bathroom Remodel
Beautiful Bathroom Remodel

+18

Recommended by76%of homeowners
Avatar for Orange Independent Plumbing Services
Orange Independent Plumbing Services
4.8(
319
)
Water Heater - Repair or Service

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%
306 neighbors recently requested a quote
Avatar for Alpine Plumbing, Heating, and Air
Alpine Plumbing, Heating, and Air
4.7(
36
)
Water Heater - Repair or Service

Serving Diamond Bar, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"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!"
Plumbing - Drain Cleaning Project
Sewer cleaned of roots and ready for lining
Prepping pipe for lining by removing massive roots
Mixing resin for liners, this resin gardens to create a solid pipe
Sewer robot in the pipe

+26

Response time9 hrs
8 neighbors recently requested a quote
Recommended by67%of homeowners
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Showing 1-10 of 231
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.