Top-rated tankless water heater repair pros.

Get matched with top tankless water heater repair pros in Waterbury, CT

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Tankless water heater repair pros in Waterbury

Avatar for Premium Northeast Plumbing, LLC.

Premium Northeast Plumbing, LLC.

5.00(
6
)
•Approved Pro

Premium Northeast Plumbing, LLC.

5.00(
6
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
62 local quotes requested

Local owner-operated business specializing in plumbing and heating. Owner has been in the plumbing field for 20 years. We pride ourselves in good communication, competitive pricing and professional service from start to finish.

"Excellent, was able to work independently without owner presence. Did a great job and was communicative by text and video."

Chirag B on July 2024

Local owner-operated business specializing in plumbing and heating. Owner has been in the plumbing field for 20 years. We pride ourselves in good communication, competitive pricing and professional service from start to finish.

"Excellent, was able to work independently without owner presence. Did a great job and was communicative by text and video."

Chirag B on July 2024

Avatar for bluefrog Plumbing + Drain of Central Connecticut

bluefrog Plumbing + Drain of Central Connecticut

5.00(
4
)
•Approved Pro

bluefrog Plumbing + Drain of Central Connecticut

5.00(
4
)
•Approved Pro
Customers say: Quick response
13 local quotes requested
24 years of experience

$96 service fee to come out and provide the best solution and most accurate quote possible. We are fully licensed and insured and have been in business for over 20 years. We are dedicated to providing exceptional plumbing and heating service. We will listen to what you have to say and offer a solution that is efficient and affordable. Looking forward to solving your plumbing and heating needs.

"The job is well done."

Abdou T on October 2025

$96 service fee to come out and provide the best solution and most accurate quote possible. We are fully licensed and insured and have been in business for over 20 years. We are dedicated to providing exceptional plumbing and heating service. We will listen to what you have to say and offer a solution that is efficient and affordable. Looking forward to solving your plumbing and heating needs.

"The job is well done."

Abdou T on October 2025

Avatar for Roto-Rooter Plumbing & Water Cleanup

Roto-Rooter Plumbing & Water Cleanup

4.38(
159
)
•Approved Pro

Roto-Rooter Plumbing & Water Cleanup

4.38(
159
)
•Approved Pro
Customers say: Quick response
106 local quotes requested
91 years of experience

When you need an emergency plumber or a drain cleaner, call Roto-Rooter Plumbing & Water Cleanup. Your fast & reliable plumber can fix any plumbing problem, including sump pumps, toilet repair, faucet repair, faucet replacement, garbage disposals, water heaters, bathtubs, showers, and outside faucets. Roto-Rooter is best known for drain cleaning & sewer cleaning. We fix drain clogs, clogged toilets or sinks, blockage of main sewer lines, slow draining shower and bathtub drains, sewer lines and leaking or burst pipes. We also specialize in water damage restoration & water cleanup services. We can fix and clean up your flooded basement too. Roto-Rooter is a 24-hour plumber near you and provides emergency service.

"Mike was excellent. He came in was very polite and professional. He quickly provided the quote and in less than an hour had removed the old leaky faucet and installed the new one. It worked perfectly and looks amazing in the kitchen. Mike removed all the old parts and new faucet packaging. He even gave me pointers on diy checking water pressure to make sure there is not too much pressure coming in. Also, reminded me to register my Delta faucet which I did shortly after. Thank you Mike!! Price seemed a bit high, but it was done right away on a Saturday! With 6 month warranty on the plumbing work."

David D on January 2026

When you need an emergency plumber or a drain cleaner, call Roto-Rooter Plumbing & Water Cleanup. Your fast & reliable plumber can fix any plumbing problem, including sump pumps, toilet repair, faucet repair, faucet replacement, garbage disposals, water heaters, bathtubs, showers, and outside faucets. Roto-Rooter is best known for drain cleaning & sewer cleaning. We fix drain clogs, clogged toilets or sinks, blockage of main sewer lines, slow draining shower and bathtub drains, sewer lines and leaking or burst pipes. We also specialize in water damage restoration & water cleanup services. We can fix and clean up your flooded basement too. Roto-Rooter is a 24-hour plumber near you and provides emergency service.

"Mike was excellent. He came in was very polite and professional. He quickly provided the quote and in less than an hour had removed the old leaky faucet and installed the new one. It worked perfectly and looks amazing in the kitchen. Mike removed all the old parts and new faucet packaging. He even gave me pointers on diy checking water pressure to make sure there is not too much pressure coming in. Also, reminded me to register my Delta faucet which I did shortly after. Thank you Mike!! Price seemed a bit high, but it was done right away on a Saturday! With 6 month warranty on the plumbing work."

David D on January 2026

warmth for less inc

No reviews yet

warmth for less inc

No reviews yet
39 years of experience

Warmth for less inc. established in 1987, is a heating contractor located in Manchester Connecticut, that specializes in the service and sales of Rinnai, Toyotomi, and Monitor heating products.

Warmth for less inc. established in 1987, is a heating contractor located in Manchester Connecticut, that specializes in the service and sales of Rinnai, Toyotomi, and Monitor heating products.

Williams General Contracting

No reviews yet

Williams General Contracting

No reviews yet

Project Management Inc.

No reviews yet

Project Management Inc.

No reviews yet
13 years of experience

Don't start your renovation project without consulting with Project Management Inc. We protect you against cost over runs, delays and contractor mistakes.

Don't start your renovation project without consulting with Project Management Inc. We protect you against cost over runs, delays and contractor mistakes.

A Advantage Appliance Repair Inc.

4.50(
36
)

A Advantage Appliance Repair Inc.

4.50(
36
)
Customers say: Super punctual
27 years of experience

Advantage appliance has been servicing appliances since 1989. we are factory trained and provide white glove service. we treat you and your home as if it were our home. We can diagnose most problems within 15 min due to our training and experience. "our service is your advantage". Hours of operations are 8am-6pm Monday-Friday. with a one year part warranty. Award winning.

"The internal temp of my stove was not working properly., but at least it still worked.They removed the Electronic board which left me with a non working oven and didn’t even tell me. I have worked with this company for years. The person they sent out was always pleasant and professional. BUT now they were beyond rude. And I still don’t have a working stove!"

Jean Marie W on October 2020

Advantage appliance has been servicing appliances since 1989. we are factory trained and provide white glove service. we treat you and your home as if it were our home. We can diagnose most problems within 15 min due to our training and experience. "our service is your advantage". Hours of operations are 8am-6pm Monday-Friday. with a one year part warranty. Award winning.

"The internal temp of my stove was not working properly., but at least it still worked.They removed the Electronic board which left me with a non working oven and didn’t even tell me. I have worked with this company for years. The person they sent out was always pleasant and professional. BUT now they were beyond rude. And I still don’t have a working stove!"

Jean Marie W on October 2020

Geo's Handyman/Landscaping Services

No reviews yet

Geo's Handyman/Landscaping Services

No reviews yet
16 years of experience

I am a handyman and I have professionals in all fields available to attend you. You name it we can do it. We can match or beat all prices and we can get you a appointment quick. Satisfaction guaranteed. We take all payments and we also can work something out if you are unable to pay all at once.

I am a handyman and I have professionals in all fields available to attend you. You name it we can do it. We can match or beat all prices and we can get you a appointment quick. Satisfaction guaranteed. We take all payments and we also can work something out if you are unable to pay all at once.

Superior Stone and Fireplace LLC

3.00(
7
)

Superior Stone and Fireplace LLC

3.00(
7
)
18 years of experience

Cost is determined by the job.

"I would give them a 0 star if i could. This company installed a high-efficiency, EPA-rated woodstove insert that does not heat the room it was installed in. I was told it was the “best bang for the buck” and a reliable unit, but that has not been the case. When I raised concerns after installation, I was told nothing was wrong and was even accused of using unseasoned wood—which was not true. Instead of taking responsibility or offering a solution, they dismissed my concerns and refused to help. Now I am stuck with a unit that doesn't work. The lack of accountability and customer service has been extremely disappointing. Based on my experience, I will not be doing business with them again."

Daniel O on October 2025

Cost is determined by the job.

"I would give them a 0 star if i could. This company installed a high-efficiency, EPA-rated woodstove insert that does not heat the room it was installed in. I was told it was the “best bang for the buck” and a reliable unit, but that has not been the case. When I raised concerns after installation, I was told nothing was wrong and was even accused of using unseasoned wood—which was not true. Instead of taking responsibility or offering a solution, they dismissed my concerns and refused to help. Now I am stuck with a unit that doesn't work. The lack of accountability and customer service has been extremely disappointing. Based on my experience, I will not be doing business with them again."

Daniel O on October 2025

M & M PAINTING & HOME IMPROVEMENT LLC

4.50(
4
)

M & M PAINTING & HOME IMPROVEMENT LLC

4.50(
4
)
Customers say: Terrific value
23 years of experience
...
Showing 1-10 of 1007