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Top-Rated Water heater repair or service pros in Ontario - Updated Nov 2026

Avatar for Payless Water Heaters & Plumbing
Payless Water Heaters & Plumbing
4.2(
132
)
Water Heater - Repair or Service

Serving Ontario, 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
Additional Photos
Additional Photos
Additional Photos

+19

Response time8 hrs
Response rate100%
Recommended by73%of homeowners
Avatar for RighTime Home Services / Rescue Rooter LA Riverside
RighTime Home Services / Rescue Rooter LA Riverside
4.1(
348
)
Water Heater - Repair or Service

Serving Ontario, CA and surrounding areas

Approved (Corporate)

In business since 1975

Free estimates

Emergency services offered

"Technicians Dominic and his assistant Eric were courteous, knowledgeable, and very professional. Everything was thoroughly explained before work was started. The work they performed in installing a new water heater, a new house water supply valve, regulator, and all associated valving and piping were of the highest quality and completed on time. All of my questions were answered to my satisfaction. The final guided tour of all the completed work and new equipment was also appreciated. I would be happy to have this highly efficient and effective team back anytime."
Fixing a leak.
59 neighbors recently requested a quote
Recommended by79%of homeowners
Avatar for Service Champions Plumbing, Heating & AC
Service Champions Plumbing, Heating & AC
4.4(
50
)
Water Heater - Repair or Service

Serving Ontario, CA and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"Kayvan was a wonderful service tech! He was on time and professionally checked out the water heater and the HVAC system. He was so polite and friendly. He explained the need for a new filter in the heating unit and showed me photos of the unit located in the attic. He also offered to do a friendly deed for free, which I greatly appreciated, He’s a great asset to Service Champions!"
Area Drain Cleaning
Plumbing
Plumbing
Garbage Disposal
Drain Cleaning

+13

Response time4 hrs
Recommended by79%of homeowners
Bruce's Plumbing Service
4.8(
49
)
Water Heater - Repair or Service

Serving Ontario, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Credit card accepted

"Noticed our water heater leaking water on Friday and contacted professionals on Angi. Bruce responded and offered a very fair price quote and was able to replace the water heater Saturday before noon. Very excellent service and highly recommended for plumbing jobs."
Response time2 hrs
Response rate99%
Recommended by76%of homeowners
Avatar for Alpine Plumbing, Heating, and Air
Alpine Plumbing, Heating, and Air
4.7(
36
)
Water Heater - Repair or Service

Serving Ontario, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"He was thorough, knowledgeful, listened to my concerns, respectful and got the job done quickly and efficiently with my plumbing problem. I would recommend Alpine Heating, plumbing and electrical services to anyone...and do recommend them."
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
10 neighbors recently requested a quote
Recommended by67%of homeowners
Avatar for Service Flow Plumbing
Service Flow Plumbing
5.0(
23
)
Water Heater - Repair or Service

Serving Ontario, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"Service Flow Plumbing did an excellent job flushing my tankless water heater at a very reasonable cost. Rose provided outstanding customer service from start to finish, and Andrew—the technician who performed the flushing—was extremely professional, knowledgeable, and sure to explain everything clearly. The whole process was smooth and stress-free. Highly recommend their team!"
Sewer Main Valve
Sewer Main Valve
Sewer Main Valve
Sewer Main Valve
Sewer Main Valve

+81

Response time8 hrs
Response rate98%
22 neighbors recently requested a quote
Avatar for Dr Rooter Plumbing
Dr Rooter Plumbing
5.0(
18
)
Water Heater - Repair or Service

Serving Ontario, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Offers commercial services

"The technician was very proficient with the knowledge of the repair needed. He kept me abreast of everything that he was doing and made sure that I had a full understanding of what was needed to repair my issue. There's not enough space for me to say all the things that I would like to say but I hope I can sum it up by this way he has been added to my contacts and I will definitely use them again in the future great guy great personality great service!"
Response time3 hrs
Response rate100%
3 neighbors recently requested a quote
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Showing 1-10 of 243
FAQs for water heater repair or service projects in Ontario, 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 Ontario, 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.