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

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

Serving Alviso, CA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Perfectly. They cleaned everything up, explained how the system worked and how often it needs attention, and hauled away the old hot water heater. They arrived on time, worked steadily, and finished before dinner time."
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 The Tankless Guys Plumbing Corp.
The Tankless Guys Plumbing Corp.
5.0(
13
)
Tankless Water Heater - Repair

Serving Alviso, CA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"You will be so pleased that you chose The Tankless Guys to look after EVERYTHING and anything to do with plumbing in your home. Gert has been my go to professional for over 10 years for ALL my plumbing needs. He operates with the highest integrity. His top priority is to do what is in the best interests of his clients. Gert and Sergio installed my new water heater two years ago. Sergio stayed for much longer than he shouldâ ve after installation was complete. He took extra care to figure out how to program the timer for my existing hot water recirculator which was not part of the water heater job. He didnâ t have to stay, but thatâ s how Gert and Sergio are. True professionals willing to lend their expertise. Some plumbing companies out there send NOT very qualified plumbers to do the minimal and/or charge you a significant amount for unnecessary work. Gert is a straight shooter. He has saved me a ton of money to replace what needed to be replaced and NOT replacing what did not need to be replaced or fixed. He will tell you whatâ s the most economical and efficient and what you need to do to protect your home from future plumbing problems. If you want cut rate prices with NOT the most qualified plumbers, donâ t call The Tankless guys. If you are looking for a team who thoughtfully looks after your whole home and considers preventative measures that you might not have considered, Youâ ll be so happy you called the Tankless Guys. Remember you get what you pay for."
Give us a call today at 408-580-0031
Give us a call
give us a call
give us a call
give us a call

+5

Response time7 hrs
Response rate91%
Recommended by100%of homeowners
Avatar for Albert Nahman Plumbing, Heating, and Cooling
Albert Nahman Plumbing, Heating, and Cooling
4.4(
722
)
Tankless Water Heater - Repair

Serving Alviso, CA and surrounding areas

Approved (Corporate)

In business since 1981

Free estimates

Warranties offered

"The first visit lead to cleaning the area around the heater and burners and checking the thermocouple. Sadly that seemed to make it worse. Less than a week later No hot water for over 30 hours till the second technician replaced the thermocouple. All is perfect now. No charge for the second visit. The next step, if needed will be a tankless and their quote looks a bit steep. But I am really hoping I won’t need to go that far."
Living room Mini-Split
Aquasana home Filtration
Almost no disturbance at EBMUD meter
Navien with filtration to protect the heat exchanger
New house valve and Pressure Reducing Valve

+73

Response time8 hrs
Response rate100%
44 neighbors recently requested a quote
Avatar for Fantastic Rooter, Inc.
Fantastic Rooter, Inc.
4.5(
174
)
Tankless Water Heater - Repair

Serving Alviso, CA and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"We hired Fantastic Rooter to re-pipe my mother-in-law's house. They did a fantastic job - even the city inspector was praising Gerardo and his crew for their work. She also needed a new water heater and sink, and those were reasonable priced. The guy that replaced the sheetrock did a great job. You can't even tell the walls were ever cut into, he made them so smooth again. And they cleaned up well, too. I highly recommend them!"
Outdoor Tankless w H
Before a Tankless install
After a Tankless install
Indoor Tankless & Repipe
Indoor Tankless W H

+1

Response time2 days
Recommended by96%of homeowners
Avatar for Jess Plumbing
Jess Plumbing
4.9(
50
)
Tankless Water Heater - Repair

Serving Alviso, CA and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"I noticed my water heater leaking late in the evening (Saturday night), and Sunday morning I reached out to Angie's List for a water heater replacement. I set my expectations that it probably wouldn't be attended to until the work week, but Jesus for Jess Plumbing responded within minutes. Checking with some of the big box stores, Jesus had extremely reasonable pricing that included the purchase of the water heater, labor for removing/installing, and hauling away the old one. After confirming pricing, he was at my home with the new water heater in hand within the hour. Once he arrived, he had a very warm and open attitude as he broke down all the steps that we'd be going through. he was very knowledgeable with the alternate methods of electric or tankless, and gave the pros/cons should I decide for an upgrade in the future. Throughout the install, I enjoyed our conversation very much and he didn't mind that I hung out in the garage while working on other projects. He moved with the intention that only comes with years of experience, deliberate and precise. When we had to shut off the water he communicated that ahead of time knowing that my family could possibly have a need to access it. Overall the whole process went incredibly smooth and would not hesitate to hire him again or to recommend him to a friend."
Plumbing Project
Plumbing Project
Plumbing Project /water main
Old gate valve/ doesn’t shut off water
Installed new Zoeller sewer tank lid

+178

Response time1 day
Response rate100%
Recommended by93%of homeowners
Avatar for Mike Counsil Plumbing and Rooter
Mike Counsil Plumbing and Rooter
4.0(
331
)
Tankless Water Heater - Repair

Serving Alviso, CA and surrounding areas

Approved (Corporate)

In business since 1994

Emergency services offered

Warranties offered

"Brian and Josh from Mike Counsil Plumbing arrived on time, quickly diagnosed the problem and completed the repairs the same morning. Good communication skills. They were polite, efficient and very professional. I would definitely hire them again."
Preparing a safe environment for working on a sewer line replacement.
Water heater installation with expansion tank
Additional Photos
Additional Photos
Additional Photos

+28

Response time8 hrs
Response rate100%
Recommended by81%of homeowners
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