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Top-Rated Tankless water heater repair pros in Fontana - Updated Nov 2026

Avatar for J I G Plumbing
J I G Plumbing
4.9(
98
)
Tankless Water Heater - Repair

Serving Fontana, CA and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"Had a old 30 year 75 gallon leaking hot water heater. JIG Owner came out to the and assessed the problem and offered a replacement unit or upgrade to a tankless! I selected the tankless. Excellent installation, and removal of the old unit. Crew showed up on time, very professional and made sure I understood the warranty terms and conditions along with the operation of the unit. The owner followed up with a followup inspection to ensure I was happy."
Completed Install
Preparing new install
Completed Install
Completed Install
Completed Install

+8

40 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Alpine Plumbing, Heating, and Air
Alpine Plumbing, Heating, and Air
4.7(
36
)
Tankless Water Heater - Repair

Serving Fontana, 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
10 neighbors recently requested a quote
Recommended by67%of homeowners
Avatar for Service Champions Plumbing, Heating & AC
Service Champions Plumbing, Heating & AC
4.4(
50
)
Tankless Water Heater - Repair

Serving Fontana, 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
Avatar for Dr Rooter Plumbing
Dr Rooter Plumbing
5.0(
18
)
Tankless Water Heater - Repair

Serving Fontana, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Offers commercial services

"Mr. Joe was not only professional, but personable as well. He identified my issue with my hot water heater, and fixed it expertly. Dr. Rooter treated me with respect and was overall a tremendous value. I saved the number, as Dr. Rooter is now my first choice for my plumbing needs. 10/10"
Response time3 hrs
Response rate100%
3 neighbors recently requested a quote
Avatar for Service Flow Plumbing
Service Flow Plumbing
5.0(
23
)
Tankless Water Heater - Repair

Serving Fontana, 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 Right Solution Plumbing
Right Solution Plumbing
4.8(
16
)
Tankless Water Heater - Repair

Serving Fontana, CA and surrounding areas

Approved

In business since 2008

Emergency services offered

Warranties offered

"We had already called another plumber on Angies List (Hayes Plumbing) to have ours replaced. But when he arrived he stated he no longer gave the senior discount as he priced his units so low and he charges more for labor for units INSIDE the home, etc.  So I called Right Solutions Plumbing out of the phonebook and told him of our desperation. He has a good steady business and after hearing of our situation said he would be over that afternoon to look at  our unit and see how soon he could help us. He was the owner - James Ratliff - and he was so kind and professional over the phone.  HE estimated our job and went to get our 50 gallon BridgeWhite (or something like that--- a very good model they dont even sell retail at Lowes or Home Depot).  He came with his assistant, Jerome (really nice young man) and completed the job without any hangups.  By the way, he doesnt charge more for the unit being inside and said he never heard of that policy .  I commend his professionalism and concern for our situation.  He is such a nice guy and well represents his trade. I will use him anytime I need his services.  My husband also was very impressed with James.  He was very knowledgeable and a good communicator which nowadays, just  doesnt happen.
He also has 24 hr emergency service and responds to all his calls. I give him my highest recommendation.  He doesnt low bid and then hit you with all the extras. Very ethical and good to know someone like him has a local business we can depend upon.
"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+13

Response time7 hrs
3 neighbors recently requested a quote
Recommended by69%of homeowners
Avatar for Rapid Rescue Rooter & Plumbing
Rapid Rescue Rooter & Plumbing
5.0(
41
)
Tankless Water Heater - Repair

Serving Fontana, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"I had a plumbing issue and called Rapid Rescue Rooter & Plumbing. They showed up on time, got the job done fast, and were super friendly. The price was good, and everything?s working great now. Highly recommend them!"
Tankless water heater
the best water treatment
Another Happy Customer
Plumbing Professionals
Plumbing Professionals

+12

Response time6 hrs
Response rate97%
5 neighbors recently requested a quote
Avatar for Sweetwater Plumbing Industries, Inc.
Sweetwater Plumbing Industries, Inc.
4.0(
620
)
Tankless Water Heater - Repair

Serving Fontana, CA and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Technician Ruben was able to spot where the issue with the water heater and he also able to fix it right away. I have asked 3 other plumbing company for bid they all recommend to replace the water heater. So Sweetwater literally saved me thousands!! Thank you!"
Water Heater Installation
Plumbing Services
Water Heater
Plumbing Services
On Time Service

+36

Response time3 hrs
18 neighbors recently requested a quote
Recommended by90%of homeowners
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