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

Avatar for H L Bowman
H L Bowman
4.6(
429
)
Tankless Water Heater - Repair

Serving Riverside, CT and surrounding areas

Approved (Corporate)

In business since 1946

Free estimates

Emergency services offered

"They were very fast to respond to my call and were able to send someone within two hours. The replacement of the hot water heater went well. For the water pipes they use copper crimp fittings instead of soldering so it will be interesting to see how that holds up over the years. My only concern is how they ran the gas line. They use Gastite CSST which is fine, but the CSST is run so it goes downward then back up and then downward again before it enters black pipe that has a moisture trap. It seems to me that if there is any moisture it will end up in the CSST instead of the trap. In addition, there is a pretty good bend in the CSST right before it goes into the trap section. Also, Teflon tape was used on the all the joints instead of joint compound. I think I will get someone from a different company to come in and take a look at it."
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+6

485 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Aldos plumbing
Aldos plumbing
5.0(
35
)
Tankless Water Heater - Repair

Serving Riverside, CT and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

"When we realized our water heater was leaking, Aldo's was fast both to respond to the inquiry and to get us a replacement; within 36 hours, we were back to having hot water with a new tankless setup. Pricing was within the range we expected and the team was very communicative; I'd hire Aldo's plumbing again!"
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+41

1 neighbors recently requested a quote
Recommended by44%of homeowners
Avatar for Cassidy Plumbing and Heating, Inc
Cassidy Plumbing and Heating, Inc
4.5(
31
)
Tankless Water Heater - Repair

Serving Riverside, CT and surrounding areas

Approved

Super Service Award Winner

In business since 1992

Emergency services offered

Warranties offered

"Anji recommended four plumbers. Cassidy was the first to respond on Friday afternoon. One other plumber responded but I could not understand his heavy accent, and he asked me if I wanted him to replace the whole burner assembly. That made no sense to me and I questioned him about it. Suddenly he became "too busy" and hung up the phone. Another plumber didn't respond until Monday morning. Too late. The fourth plumber never responded at all. Cassidy asked if it was an emergency or could wait until Monday. I said Monday. and asked what time? I did not get an answer on Friday. Around 8:30P I called and got an answering service which told me that I wouldn't get a response until Monday because their office closed at 8:00P. I had asked about what time on Monday before 6:00P George arrived Monday morning. He was friendly. He knew what he was doing. He replaced the thermocouple. All work was done neatly and professionally. We have hot water again. I'd use Cassidy again."
Heating System
Heating System
Plumbing
The Team
Navien Water Heater

+3

Response time2 days
Response rate100%
8 neighbors recently requested a quote
Avatar for First String Plumbing, Heating & Cooling
First String Plumbing, Heating & Cooling
5.0(
10
)
Tankless Water Heater - Repair

Serving Riverside, CT and surrounding areas

Approved

In business since 1983

Free estimates

Emergency services offered

First String Plumbing, Heating & Cooling is built on over four decades of hands-on, master-level experience paired with modern equipment, straightforward pricing and a commitment to serving our neighbors near and far.\n\nWe believe every homeowner in Connecticut and New York deserves a team they can count on whenever they need help. When the lights are at their brightest and all eyes are on us, we will always do what is right and that commitment never fades.

Tankless Water Heater
Water Pipe Repair
Water Pipe Repair
Water Heater Install
15 neighbors recently requested a quote
Avatar for Sila Heating, Cooling and Plumbing
Sila Heating, Cooling and Plumbing
4.5(
896
)
Tankless Water Heater - Repair

Serving Riverside, CT and surrounding areas

In business since 1989

Free estimates

Emergency services offered

"SILA called to offer their annual heating inspection services given that I was a prior customer. The gentlemen they sent, Ivan, was very knowledgeable and thorough. He went over and above, and spent a lot of time explaining the parts of my boiler to me and likely failure points, gave some recommendations on my aging indirect water tank, and even answered a few questions I had regarding thermostat wiring. He was very patient, and left everything clean and exactly the same was as he had found it. He wore a mask, covered his shoes, and was very respectful. I've used SILA for my annual inspection every year the past five or so years."
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+20

Response time10 hrs
Response rate100%
3 neighbors recently requested a quote
Avatar for MFS PLUMBING AND WATER HEATER CO.
MFS PLUMBING AND WATER HEATER CO.
5.0(
17
)
Tankless Water Heater - Repair

Serving Riverside, CT and surrounding areas

In business since 1987

Free estimates

Emergency services offered

"I cannot recommend Mark more! We called him for a dishwasher installation and pipe repair. He quoted us reasonably - and was generous with his work and time when what we thought was a simple job turned out to be much more complicated. He was absolutely a pleasure to work with - communicative about the issue and his solution, flexible with scheduling, and just an all-around nice guy. We will not be hesitating to call him in the future - our go-to-guy for all plumbing needs."
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Recommended by100%of homeowners
Avatar for Badaracco Plumbing & Heating, Inc.
Badaracco Plumbing & Heating, Inc.
4.3(
201
)
Tankless Water Heater - Repair

Serving Riverside, CT and surrounding areas

In business since 2002

Free estimates

Emergency services offered

"Within a minute of requesting a quote, Tony called. Said he would come the following morning and look at the water heater. Less then 24 hours after that I have a new water heater at what I believe to be a very fair price."
Response time3 days
Recommended by93%of homeowners
Avatar for Braido Heating & AC
Braido Heating & AC
5.0(
25
)
Tankless Water Heater - Repair

Serving Riverside, CT and surrounding areas

In business since 1978

Emergency services offered

Credit card accepted

"Braido is a nice family run company.  I had the original 25 year old furnace and AC. I has the last house on the block to replace them.  Needed to get it done before winter.  They showed up the day I called for an estimate, took measurements, checked old system and discussed in detail my options for a replacement system.   No pressure to sell me the best as we will down size in a few years. A few days later quotes for two systems arrived. I was able to scheduled an installation that fit my schedule.  It was your typical one day job.  Everything went smoothly with the installation, and the old hardware was taken away.  I like this company and recommend them, I give them and A.
"
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Recommended by100%of homeowners
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