Top-rated tankless water heater repair pros.

Get matched with top tankless water heater repair pros in your area

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.

Tankless water heater repair pros in Lowell

Avatar for Addario, Inc.

Addario, Inc.

2 Gill Street, Suite J
3.95(
225
)
Approved Pro

Addario, Inc.

2 Gill Street, Suite J
3.95(
225
)
Approved Pro
Customers say: True professional
910 local quotes requested
27 years of experience

Over 70,000 Massachusetts homeowners trust Addario's for peace of mind. For nearly 30 years, we've kept homes comfortable with heat that stays on, clean water, and reliable systems. We've served 50,000+ families with true craftsmanship and integrity. A+ BBB rated with the region's strongest warranty, we're the company your neighbors recommend. As one of the state's fastest-growing companies, we're licensed, insured, and fully equipped for plumbing, heating, cooling, electrical, drain cleaning, sewer replacement, generators, bathroom remodels, and more. Our 50+ expert team doesn't just fix problems—we prevent them. Every service includes a personalized Homeowner's Maintenance Checklist to protect your investment. When your heating or cooling isn't working right, we don't guess. We fix it fast, completely, and correctly the first time. You just call Addario's—and consider it handled.

"Anthony and Doug were very helpful and getting the work done fast and on time."

Joubert F on July 2025

Over 70,000 Massachusetts homeowners trust Addario's for peace of mind. For nearly 30 years, we've kept homes comfortable with heat that stays on, clean water, and reliable systems. We've served 50,000+ families with true craftsmanship and integrity. A+ BBB rated with the region's strongest warranty, we're the company your neighbors recommend. As one of the state's fastest-growing companies, we're licensed, insured, and fully equipped for plumbing, heating, cooling, electrical, drain cleaning, sewer replacement, generators, bathroom remodels, and more. Our 50+ expert team doesn't just fix problems—we prevent them. Every service includes a personalized Homeowner's Maintenance Checklist to protect your investment. When your heating or cooling isn't working right, we don't guess. We fix it fast, completely, and correctly the first time. You just call Addario's—and consider it handled.

"Anthony and Doug were very helpful and getting the work done fast and on time."

Joubert F on July 2025


Avatar for Spencer Home Services

Spencer Home Services

67 Foster St
4.97(
20
)
Approved Pro

Spencer Home Services

67 Foster St
4.97(
20
)
Approved Pro
Customers say: Quality work
45 years of experience
Free onsite estimate

Spencer Home Services (previously Holland Energy) is a family-owned and operated business founded by Peter Holland. Based in Peabody, MA, we have served homes and businesses across Essex County and the North Shore for 40+ years. Spencer offers a range of services and home improvements, including drain clearing, bathroom installations, tree root removals, and more. Over the years, we've earned a reputation for being reputable, dependable, and dedicated to our community. We strive to create intimate experiences, ensuring you feel respected and not just another job on our list. From your first call with us to the moment your job is completed, you can feel confident that you're in the best hands. Same Day Service - We are responsive and proactive when you need us

"null"

Frank H on May 2025

Spencer Home Services (previously Holland Energy) is a family-owned and operated business founded by Peter Holland. Based in Peabody, MA, we have served homes and businesses across Essex County and the North Shore for 40+ years. Spencer offers a range of services and home improvements, including drain clearing, bathroom installations, tree root removals, and more. Over the years, we've earned a reputation for being reputable, dependable, and dedicated to our community. We strive to create intimate experiences, ensuring you feel respected and not just another job on our list. From your first call with us to the moment your job is completed, you can feel confident that you're in the best hands. Same Day Service - We are responsive and proactive when you need us

"null"

Frank H on May 2025


Avatar for Landry Mechanical, Inc.- Plumbing

Landry Mechanical, Inc.- Plumbing

22 Howe Ave
4.62(
94
)
Approved Pro

Landry Mechanical, Inc.- Plumbing

22 Howe Ave
4.62(
94
)
Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
340 local quotes requested

In 2008, Landry Mechanical Inc Plumbing HVAC & Electric began serving residents throughout Worcester and Middlesex County. We started out just serving 20 systems a year and working on systems that our competitors ignored, such as wood systems or alternative energy systems. In putting our customers first, our reputation for quality work grew, as did our business.

"Rather not"

Renee M on May 2025

In 2008, Landry Mechanical Inc Plumbing HVAC & Electric began serving residents throughout Worcester and Middlesex County. We started out just serving 20 systems a year and working on systems that our competitors ignored, such as wood systems or alternative energy systems. In putting our customers first, our reputation for quality work grew, as did our business.

"Rather not"

Renee M on May 2025


Avatar for Super Service Today, Inc.

Super Service Today, Inc.

4 Jewell Drive, #6
4.31(
285
)
Approved Pro

Super Service Today, Inc.

4 Jewell Drive, #6
4.31(
285
)
Approved Pro
Customers say: True professional
54 local quotes requested
12 years of experience

We take the time to really listen and understand your goals and needs to make sure you are fully satisfied with the service you receive. Our service experts are trained to offer long term solutions that will best work for you and your family. We are a family owned and locally operated company serving Middlesex County, Essex County, Suffolk County and surrounding communities. Super Service Today, Inc. specializes in all aspects of plumbing, gas work, residential heating, drain cleaning, sewer repairs and main water service relays. We are available to assist you with all of your plumbing requirements from faucet installs to sewer replacements. We are solution experts that you only need to call once. Give us a call today to see how we can help you with all of your plumbing needs

"They were fine "

Michael K on July 2025

We take the time to really listen and understand your goals and needs to make sure you are fully satisfied with the service you receive. Our service experts are trained to offer long term solutions that will best work for you and your family. We are a family owned and locally operated company serving Middlesex County, Essex County, Suffolk County and surrounding communities. Super Service Today, Inc. specializes in all aspects of plumbing, gas work, residential heating, drain cleaning, sewer repairs and main water service relays. We are available to assist you with all of your plumbing requirements from faucet installs to sewer replacements. We are solution experts that you only need to call once. Give us a call today to see how we can help you with all of your plumbing needs

"They were fine "

Michael K on July 2025


Avatar for ER Services Plumbing and Heating

ER Services Plumbing and Heating

11 Norris St
3.58(
6
)
Approved Pro

ER Services Plumbing and Heating

11 Norris St
3.58(
6
)
Approved Pro
Customers say: Quality work
342 local quotes requested
2 years of experience

Since our founding, ER Services Plumbing & Heating has been known for quality services, exceptional efficiency, and the highest level of professionalism. No matter what service you’re looking for, we guarantee to not only meet but exceed your expectations and ensure your full satisfaction. We have been servicing the Merrimack Valley and North Shore for 15+ years of professional experience. We excel in High-Efficiency Boilers, Water Heater Replacement, New Construction, Remodels, and Repairs. - Call today!

"The provider came out to prepare my toilet because it was leaking in the basement. Overall, I thought the process went well. He could not get the valve beside the toilet to turn off so he turned off my main water valve to the house. He only opened up the faucet upstairs unit Downstairs unit was not open and my water heater, which is electric was not turned off now I m getting an alarm on my water heater saying it has been compromise. I consulted a plumber and was told that the water heater should ve been turned off because it s electric and he should ve bled the water heater After he turned the water back on. So the alarm is still on my water heater."

Rose W on August 2025

Since our founding, ER Services Plumbing & Heating has been known for quality services, exceptional efficiency, and the highest level of professionalism. No matter what service you’re looking for, we guarantee to not only meet but exceed your expectations and ensure your full satisfaction. We have been servicing the Merrimack Valley and North Shore for 15+ years of professional experience. We excel in High-Efficiency Boilers, Water Heater Replacement, New Construction, Remodels, and Repairs. - Call today!

"The provider came out to prepare my toilet because it was leaking in the basement. Overall, I thought the process went well. He could not get the valve beside the toilet to turn off so he turned off my main water valve to the house. He only opened up the faucet upstairs unit Downstairs unit was not open and my water heater, which is electric was not turned off now I m getting an alarm on my water heater saying it has been compromise. I consulted a plumber and was told that the water heater should ve been turned off because it s electric and he should ve bled the water heater After he turned the water back on. So the alarm is still on my water heater."

Rose W on August 2025


Avatar for Maffei Plumbing and HVAC, LLC

Maffei Plumbing and HVAC, LLC

383 Main Street
3.00(
1
)
Approved Pro

Maffei Plumbing and HVAC, LLC

383 Main Street
3.00(
1
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
65 local quotes requested

At Maffei Plumbing and HVAC, LLC, we are committed to your comfort. With an experienced and qualified staff to provide quick service for any service needed. We can solve any problem with a friendly face. Give us a call for a free estimate.

"Ok!"

Dawn D on October 2021

At Maffei Plumbing and HVAC, LLC, we are committed to your comfort. With an experienced and qualified staff to provide quick service for any service needed. We can solve any problem with a friendly face. Give us a call for a free estimate.

"Ok!"

Dawn D on October 2021


Avatar for MillTown Plumbing, Heating, Cooling and Electrical - Plumbing

MillTown Plumbing, Heating, Cooling and Electrical - Plumbing

131 Steadman Street, Suite 6
4.51(
313
)
Approved Pro

MillTown Plumbing, Heating, Cooling and Electrical - Plumbing

131 Steadman Street, Suite 6
4.51(
313
)
Approved Pro
Customers say: Quick response
96 local quotes requested
46 years of experience

Since 1979, we've provided the highest quality protection against plumbing, heating, cooling and drain problems for residential, commercial and property managers in the Merrimack Valley and southern New Hampshire. At MillTown Plumbing, Heating, HVAC, and Drain Cleaning, we're a family owned and operated business. We know the value of fast service, from a professional and reliable team. Give us a call today at (617) 725-2674! We look forward to serving you.

"It is unfair to be charged such an excessive amount for a very basic service that required minimal time and effort. The technician spent Not even 30 minutes "

Sam Y on August 2025

Since 1979, we've provided the highest quality protection against plumbing, heating, cooling and drain problems for residential, commercial and property managers in the Merrimack Valley and southern New Hampshire. At MillTown Plumbing, Heating, HVAC, and Drain Cleaning, we're a family owned and operated business. We know the value of fast service, from a professional and reliable team. Give us a call today at (617) 725-2674! We look forward to serving you.

"It is unfair to be charged such an excessive amount for a very basic service that required minimal time and effort. The technician spent Not even 30 minutes "

Sam Y on August 2025


Avatar for Mora's Plumbing & Heating, LLC

Mora's Plumbing & Heating, LLC

7 Sagamore Road
5.00(
6
)
Approved Pro

Mora's Plumbing & Heating, LLC

7 Sagamore Road
5.00(
6
)
Approved Pro
5 years of experience
Emergency services offered

We are a locally owned and operated company that values honesty and integrity and stand behind our work. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building long-term relationships with our clients and guarantee your satisfaction!

"I had a water line break in my home at 2am in the morning. I called Frank and he was at my home first thing in the morning. He fixed my water line and the charge was very reasonable. I have also had Frank replace a couple of fittings in one of my bathrooms. He is the person I relie on the take care of my plumbing needs."

Jim F on June 2025

We are a locally owned and operated company that values honesty and integrity and stand behind our work. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building long-term relationships with our clients and guarantee your satisfaction!

"I had a water line break in my home at 2am in the morning. I called Frank and he was at my home first thing in the morning. He fixed my water line and the charge was very reasonable. I have also had Frank replace a couple of fittings in one of my bathrooms. He is the person I relie on the take care of my plumbing needs."

Jim F on June 2025


Avatar for 128 Plumbing and Heating, Inc.

128 Plumbing and Heating, Inc.

78 Foundry Street
4.06(
28
)
Approved Pro

128 Plumbing and Heating, Inc.

78 Foundry Street
4.06(
28
)
Approved Pro
Customers say: Quality work
33 years of experience
Free onsite estimate

For over 30 years in the neighborhood, 128 Plumbing, Heating, Cooling & Electric has provided the highest quality, efficiency, and reliability in service to customers. Celebrating thousands of 5-star reviews online and an A+ Rating on BBB for years, the company has become the North Shore’s most trusted & consistent plumber, heating and air conditioning, and electrical service company. Also proud to be titled a Diamond Elite Contractor with Mitsubishi Electric and a Mass Save Heat Pump Installer. We take pride in being there for you 24/7 with manufacturer-trained technicians and a commitment to providing customers with manufacturer-trained technicians and a commitment to providing customers with an easy, effortless customer service experience. You're guaranteed to be left with the service and upfront pricing with customized options for what's best for your home in the long-term.

"Luis M. came to fix a furnace humidifier. He arrived on time and was very professional and knowledgeable about the equipment. He was able to quickly determine the issue and repair the underlying problem. Very pleased with his service and time he spent to explain the issues and operation of the unit."

Wayne O on February 2024

For over 30 years in the neighborhood, 128 Plumbing, Heating, Cooling & Electric has provided the highest quality, efficiency, and reliability in service to customers. Celebrating thousands of 5-star reviews online and an A+ Rating on BBB for years, the company has become the North Shore’s most trusted & consistent plumber, heating and air conditioning, and electrical service company. Also proud to be titled a Diamond Elite Contractor with Mitsubishi Electric and a Mass Save Heat Pump Installer. We take pride in being there for you 24/7 with manufacturer-trained technicians and a commitment to providing customers with manufacturer-trained technicians and a commitment to providing customers with an easy, effortless customer service experience. You're guaranteed to be left with the service and upfront pricing with customized options for what's best for your home in the long-term.

"Luis M. came to fix a furnace humidifier. He arrived on time and was very professional and knowledgeable about the equipment. He was able to quickly determine the issue and repair the underlying problem. Very pleased with his service and time he spent to explain the issues and operation of the unit."

Wayne O on February 2024


Avatar for O'Brien Plumbing Works

O'Brien Plumbing Works

317 Cambridge Street
4.28(
20
)
Approved Pro

O'Brien Plumbing Works

317 Cambridge Street
4.28(
20
)
Approved Pro
Customers say: Quick response
40 years of experience
Free onsite estimate

O'Brien Plumbing Works is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over40 years of hands on experience to provide innovative ideas and suggestions tailored to your projects.We are a full service companey for all of your plumbing and heating needs Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"I would thank them for the work and services. Max was very prompt and polite. We were definitely taken aback with the bill. We were not informed about any of the charges around: 1. Time taken for pulling the permit(1hour@$180) 2. Time for inspector coming in(1hour@$180) 3. Price for permit These 3 costs total to $425. The material cost of $263 definitely seemed marked up. * I wish they had mentioned about expecting these costs so that we could make an informed decision. * We have had several permits pulled in last year ( had frozen pipe burst situation so had renovations going on for multiple months) and never were charged for the time taken to pull permit or for inspectors time at the time of inspection. * Max mentioned it was going to be $180 an hour and you were here for 2 hours from start to end.. The father(Peter) kept mentioning about the emergency charges that there are plumbers that charge $300 an hour, I was clear that we were okay with waiting for a couple of days so there was no question of those charges being applied. He kept giving an explanation of the bill being high enough but it seemed very vague. We were charge $1100 for 2 hours of work to fix a slow gas leak that National grid had identified and pointed to us so they shut of our gas supply. National grid guys had told us that it would be only 1-2 hours of plumbing work. I would not recommend them for sure for the sour taste it has left for us. I wish we went with presidential plumbing or 128 plumbing that we have gone in the past. They are expensive but you know the quote before hand."

Angela K on January 2024

O'Brien Plumbing Works is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over40 years of hands on experience to provide innovative ideas and suggestions tailored to your projects.We are a full service companey for all of your plumbing and heating needs Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"I would thank them for the work and services. Max was very prompt and polite. We were definitely taken aback with the bill. We were not informed about any of the charges around: 1. Time taken for pulling the permit(1hour@$180) 2. Time for inspector coming in(1hour@$180) 3. Price for permit These 3 costs total to $425. The material cost of $263 definitely seemed marked up. * I wish they had mentioned about expecting these costs so that we could make an informed decision. * We have had several permits pulled in last year ( had frozen pipe burst situation so had renovations going on for multiple months) and never were charged for the time taken to pull permit or for inspectors time at the time of inspection. * Max mentioned it was going to be $180 an hour and you were here for 2 hours from start to end.. The father(Peter) kept mentioning about the emergency charges that there are plumbers that charge $300 an hour, I was clear that we were okay with waiting for a couple of days so there was no question of those charges being applied. He kept giving an explanation of the bill being high enough but it seemed very vague. We were charge $1100 for 2 hours of work to fix a slow gas leak that National grid had identified and pointed to us so they shut of our gas supply. National grid guys had told us that it would be only 1-2 hours of plumbing work. I would not recommend them for sure for the sour taste it has left for us. I wish we went with presidential plumbing or 128 plumbing that we have gone in the past. They are expensive but you know the quote before hand."

Angela K on January 2024

...
Showing 1-10 of 925