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

Avatar for Mighty Plumbers
Mighty Plumbers
5.0(
31
)
Tankless Water Heater - Repair

Serving Thermal, CA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"They got my water heater fixed very quickly, and it works perfect now. The efficiency and attention to detail was much appreciated and these guys were very professional. Iâ d recommend for any plumbing needs."
WATER HEATER REPLACEMENT
WATER HEATER REPLACEMENT
WATER HEATER REPLACEMENT
Water heater replacement
Water heater replacement

+1

Response time20 mins
Response rate89%
11 neighbors recently requested a quote
Avatar for Right Solution Plumbing
Right Solution Plumbing
4.8(
16
)
Tankless Water Heater - Repair

Serving Thermal, CA and surrounding areas

Approved

In business since 2008

Emergency services offered

Warranties offered

I offer 10% off first home or commercial visit, all major credit cards are accepted, senior discounts, I work with contractors and offer a 30 to 45 day billing for businesses upon approval. 24 hour emergency service, and free estimates in most areas.

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+13

Response time7 hrs
3 neighbors recently requested a quote
Recommended by69%of homeowners
Avatar for Water Heaters Only, Inc
Water Heaters Only, Inc
4.7(
440
)
Tankless Water Heater - Repair

Serving Thermal, CA and surrounding areas

In business since 1968

Free estimates

Emergency services offered

"I called Water Heaters Only out of desperation on Sunday...Seth @ toll free # was fully aware of our tenants being without hot water for 2 days and was able to get a technician out on Monday morning. Monday @ 5 pm, hot water was up and running. David, the technician knew what had to be done to get the heater up and running. The next day, we did have a hiccup with a part but David came out immediately and tweaked the part -- all is good. Here is what I like -- 1. no sales pitch. 2. David gave me a plan b for possible additional work. 3. this company is available 365 days and you dont have to wait for parts to be delivered from out of state. 4. Water Heaters Only has their own facility for parts."
Our technician Fabian getting ready to drain a water heater.
A newly installed 40 gallon residential water heater.
A tankless water heater installed in a garage.
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+2

Recommended by94%of homeowners
Avatar for Top Service Plumbing Company
Top Service Plumbing Company
4.2(
178
)
Tankless Water Heater - Repair

Serving Thermal, CA and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"The whole process was very smooth. They came out and spent a couple of hours assessing the problems...turns out we had several. The water heater burner had failed and was under warranty. But they also discovered our pressure regulator had failed, our gate valve was frozen, and we had a pipe leaking in the wall! They found the necessary part for the warranty repair and drove 50 miles each way to get it rather than make us wait 1-2 days for for the part to be shipped. They stayed until all the problems were resolved which was greatly appreciated! (My wife and three daughters were not relishing cold showers!)"
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Residential Plumbing

+1

Recommended by76%of homeowners
Avatar for Mega Power Electric, Inc
Mega Power Electric, Inc
5.0(
191
)
Tankless Water Heater - Repair

Serving Thermal, CA and surrounding areas

In business since 2000

Free estimates

Emergency services offered

Founded in 2000, for over 20 years Mega Power has been one of the premier solar companies in all of California, including many cities like Los Angeles, Riverside, Santa Clara, Granite Bay, Van Nuys, San Francisco, San Jose, Pasadena, Sacramento. Complete customer satisfaction, personalized approach and attention to details are our company’s intrinsic core values. We are providing the highest quality service as we enable our customers to save money, increase their property value and help improve the environment. Our team of certified professionals takes genuine pride in giving smooth, practical, Eco-friendly and positive solutions to our residential, commercial and industrial customers’ needs. All equipment and services meet both National Electrical Code requirements and local building codes. Mega Power offers a range of options toward green and energy-efficient solutions to all electrical power needs. We have extensive experience in building a complete solar panel system of all sizes on the roof or on the ground. Mega Power installs them with interconnection to the utility provider so that you could successfully sell excess electricity.

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+32

Recommended by100%of homeowners
Avatar for Top Contender Drain Specialist, Inc.
Top Contender Drain Specialist, Inc.
4.6(
230
)
Tankless Water Heater - Repair

Serving Thermal, CA and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"I recently had a kitchen drain snaked by Top Contender drain specialist Inc. They did a great job. I've hired them numerous times over the years because I own an apartment building, they've done all kinds of work for me. They've done everything from jackhammering the cement to get out a bad pipe, to climbing on the roof to access the vent pipe, all types of repairs, they have consistently been excellent. When they work in apartments that are occupied by tenants I always get a happy response from the tenants because everything gets fixed right and they clean up their work after they're done. I've even hired them to work on my home and my parents home. I have no hesitation in recommending them, recently they showed up on a holiday weekend with a smile and took care of my clogged drain that was affecting three different apartments. Because they were willing to show up at a difficult time it made the weekend nice for everybody and I appreciate that."
Camera Inspection
Dirt, Rocks and Debry
Locator the Drain line
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+9

Recommended by91%of homeowners
Avatar for Bob & Marc Plumbing Heating & Air
Bob & Marc Plumbing Heating & Air
4.5(
104
)
Tankless Water Heater - Repair

Serving Thermal, CA and surrounding areas

In business since 1989

"I called and setup an appointment for the afternoon.  The dispatcher called back in an hour saying the plumber was free earlier and came immediately.  He was there within an hour and gave me an estimate for the replacement and upgrade that I wanted.  I agreed to the price and within 3 hours I had a new water heater.  I can?t imagine where they could have done any better.
"
Recommended by89%of homeowners
Avatar for Right Away Rooter Plumbing
Right Away Rooter Plumbing
5.0(
12
)
Tankless Water Heater - Repair

Serving Thermal, CA and surrounding areas

In business since 2016

Free estimates

Emergency services offered

"What an excellent experience!! Richard is so knowledgeable and well priced. I was SO lucky to find him. We even had a problem with pour water pressure we were not aware of, so I having him come back to fix that. Professional, high quality workmanship. I highly recommend Right Away Rooter Plumbing. A+ + + +"
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+50

Recommended by100%of homeowners
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