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Tankless water heater repair pros in Southborough

Avatar for Addario, Inc.
Addario, Inc.
2 Gill Street, Suite J
3.94(
222
)
Approved Pro
Addario, Inc.
2 Gill Street, Suite J
3.94(
222
)
Approved Pro
Customers say: True professional
1010 local quotes requested
27 years of experience

For over 2 decades, Addario's has provided over 50,000 Massachusetts homeowners with reliable, trustworthy, and complete home services. Backed by the area's best warranty. Addario's is an A+ Better Business Bureau rated company and was voted one of the fastest growing companies in 2013. We are licensed and insured, able to perform any and all home service jobs related to plumbing, heating, cooling, electrical, drain cleaning, sewer replacement, one-day bathroom remodels, generators and much more. If your home needs it, Addario's can do it. Comprised of more than 50 employees, homeowners can trust Addario's to perform all types of home repairs, inspections and replacements for all of your homes vital mechanical systems. As a valued customer, you will receive a homeowners checklist to help you maintain your home in between visits. If any aspect of your heating and cooling system isn't working properly rest assured we'll fix it!

"Great work!"

Daniel P on May 2025

For over 2 decades, Addario's has provided over 50,000 Massachusetts homeowners with reliable, trustworthy, and complete home services. Backed by the area's best warranty. Addario's is an A+ Better Business Bureau rated company and was voted one of the fastest growing companies in 2013. We are licensed and insured, able to perform any and all home service jobs related to plumbing, heating, cooling, electrical, drain cleaning, sewer replacement, one-day bathroom remodels, generators and much more. If your home needs it, Addario's can do it. Comprised of more than 50 employees, homeowners can trust Addario's to perform all types of home repairs, inspections and replacements for all of your homes vital mechanical systems. As a valued customer, you will receive a homeowners checklist to help you maintain your home in between visits. If any aspect of your heating and cooling system isn't working properly rest assured we'll fix it!

"Great work!"

Daniel P 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
233 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 Tandem Mechanical
Tandem Mechanical
21 Mainline Drive
5.00(
32
)
Approved Pro
Tandem Mechanical
21 Mainline Drive
5.00(
32
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
36 local quotes requested

We are a locally owned and operated company that values honesty and integrity in all aspects of our business. Our major focus is on the quality our work and producing outstanding results. We are committed to creating a level of value unmatched by any of our competitors. We look forward to building lasting relationships with our clients and guarantee your satisfaction! We also provide plumbing, Hvac, and drain cleaning services through out MA, CT, and VT

"Josh and his crew are amazing. Far exceeded all of my expectations. Very responsive from day one and communicated well every aspect of my project every step of the way through completion. Highly recommend Tandem Mechanical this is hands down the best company Ive ever hired."

Brayton W on January 2022

We are a locally owned and operated company that values honesty and integrity in all aspects of our business. Our major focus is on the quality our work and producing outstanding results. We are committed to creating a level of value unmatched by any of our competitors. We look forward to building lasting relationships with our clients and guarantee your satisfaction! We also provide plumbing, Hvac, and drain cleaning services through out MA, CT, and VT

"Josh and his crew are amazing. Far exceeded all of my expectations. Very responsive from day one and communicated well every aspect of my project every step of the way through completion. Highly recommend Tandem Mechanical this is hands down the best company Ive ever hired."

Brayton W on January 2022


Avatar for Yellow Dog Home Services, LLC
Yellow Dog Home Services, LLC
19 Kearney Rd
5.00(
2
)
Approved Pro
Yellow Dog Home Services, LLC
19 Kearney Rd
5.00(
2
)
Approved Pro
65 local quotes requested
1 years of experience

Growing up, my Dad had a someone for just about every issue that life could throw at him. Car’s making a funny sound? “Call Mr. Genese.” No hot water? “Call Mr. Martin.” Need a sport coat for my first job interview, “Call Mr. Antista.” Those people cared about my Dad and his family, they did great work, and most important, their advice could be trusted. Yellow Dog is bringing back old school customer service, with plumbers and HVAC technicians who are highly technically competent, and more important, who really care about your family and can be trusted to give you the best advice. We believe that old school customer service, paired with the latest technology to make setting up your appointment and communicating with us easy, and of course the highest quality work is what our customers deserve. Thank you for taking the time to learn a little more about us, and we hope you’ll give us a chance to earn your trust. We’re Yellow Dog – and we’re always by your side. Pat Dunn, CEO

Growing up, my Dad had a someone for just about every issue that life could throw at him. Car’s making a funny sound? “Call Mr. Genese.” No hot water? “Call Mr. Martin.” Need a sport coat for my first job interview, “Call Mr. Antista.” Those people cared about my Dad and his family, they did great work, and most important, their advice could be trusted. Yellow Dog is bringing back old school customer service, with plumbers and HVAC technicians who are highly technically competent, and more important, who really care about your family and can be trusted to give you the best advice. We believe that old school customer service, paired with the latest technology to make setting up your appointment and communicating with us easy, and of course the highest quality work is what our customers deserve. Thank you for taking the time to learn a little more about us, and we hope you’ll give us a chance to earn your trust. We’re Yellow Dog – and we’re always by your side. Pat Dunn, CEO


Avatar for Blue Bear Plumbing
Blue Bear Plumbing
300 Longwater Dr
4.52(
22
)
Approved Pro
Blue Bear Plumbing
300 Longwater Dr
4.52(
22
)
Approved Pro
Customers say: True professional
23 local quotes requested
8 years of experience

Blue Bear Plumbing, Heating & Air is proud to be the premier provider of air conditioning, heating, and plumbing solutions for South Shore and MetroWest residents. We take pride in meeting our community’s home service needs and delivering unbeatable customer service. With same-day service and 24/7 emergency repair availability, you can rely on us whenever you need fast and effective service!

"As a property manager, we contacted a local company to look at a furnace over a minor leak. I received a phone call from somebody who is wishy-washy, unprofessional, and caused me to treat the call with extra caution. After realizing he had no intention to look at the problem that was called about, I was explained that the heat exchanger was starting to have issues, causing carbon monoxide. When I asked, why doesnâ t the detectors catch it and he said Sometimes it doesnâ t and sometimes itâ s not bad enough yet. So I asked him is there a problem or something that you believe is coming and I could not get a straight answer. He threatened to shut the heating system off Safety concerns. To shut the heat off on my tenant on a cold day. My big issue is how they went about this, instead of shutting the gas off or possibly the breaker, I learned later in the day that they cut wiring inside of furnace. Which I promptly had repaired. And I had the heating system taken apart to confirm or deny whether the heat exchanger Had a crack in it or not. Come to find out everything is fine, all done, by a licensed HVAC person. After discussing this with other people, I have found that this company is prone to pressureTactics, threats and scams. Stay away from Blue Bear of Pembroke!! If you have any questions, you can leave a comment here or you can find me on social. Iâ ll be happy to walk you through why you should not hire or call this company."

Jonathan A on December 2024

Blue Bear Plumbing, Heating & Air is proud to be the premier provider of air conditioning, heating, and plumbing solutions for South Shore and MetroWest residents. We take pride in meeting our community’s home service needs and delivering unbeatable customer service. With same-day service and 24/7 emergency repair availability, you can rely on us whenever you need fast and effective service!

"As a property manager, we contacted a local company to look at a furnace over a minor leak. I received a phone call from somebody who is wishy-washy, unprofessional, and caused me to treat the call with extra caution. After realizing he had no intention to look at the problem that was called about, I was explained that the heat exchanger was starting to have issues, causing carbon monoxide. When I asked, why doesnâ t the detectors catch it and he said Sometimes it doesnâ t and sometimes itâ s not bad enough yet. So I asked him is there a problem or something that you believe is coming and I could not get a straight answer. He threatened to shut the heating system off Safety concerns. To shut the heat off on my tenant on a cold day. My big issue is how they went about this, instead of shutting the gas off or possibly the breaker, I learned later in the day that they cut wiring inside of furnace. Which I promptly had repaired. And I had the heating system taken apart to confirm or deny whether the heat exchanger Had a crack in it or not. Come to find out everything is fine, all done, by a licensed HVAC person. After discussing this with other people, I have found that this company is prone to pressureTactics, threats and scams. Stay away from Blue Bear of Pembroke!! If you have any questions, you can leave a comment here or you can find me on social. Iâ ll be happy to walk you through why you should not hire or call this company."

Jonathan A on December 2024


Avatar for Plumbing Solutions, Inc.
Plumbing Solutions, Inc.
5 Business Street
4.90(
10
)
Approved Pro
Plumbing Solutions, Inc.
5 Business Street
4.90(
10
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
16 local quotes requested

We’re dedicated to providing our clients with the very best in service, installation, and repair to meet your plumbing needs. We specialize in mechanical piping and a variety of residential and commercial services. We take pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"Great service, friendly people. The price seemed a bit high, but is likely competitive."

Ronald M on June 2019

We’re dedicated to providing our clients with the very best in service, installation, and repair to meet your plumbing needs. We specialize in mechanical piping and a variety of residential and commercial services. We take pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"Great service, friendly people. The price seemed a bit high, but is likely competitive."

Ronald M on June 2019


Avatar for Rodenhiser Home Services, Inc.
Rodenhiser Home Services, Inc.
325 Hopping Brook Rd
New on HomeAdvisorNew on Angi
Approved Pro
Rodenhiser Home Services, Inc.
325 Hopping Brook Rd
New on AngiNew on HomeAdvisor
Approved Pro
118 local quotes requested
97 years of experience

When it comes to great service for your home or business, it doesn't get better than the professionalism and dedication of Rodenhiser Plumbing, Heating, AC and Electric. It's an unsurpassed level of service built on a promise that ensures you get the very best. When you call Rodenhiser, your satisfaction is guaranteed. With 90+ years of delighted residential and commercial clients, you can be sure that it's a promise that Rodenhiser delivers on every day.

When it comes to great service for your home or business, it doesn't get better than the professionalism and dedication of Rodenhiser Plumbing, Heating, AC and Electric. It's an unsurpassed level of service built on a promise that ensures you get the very best. When you call Rodenhiser, your satisfaction is guaranteed. With 90+ years of delighted residential and commercial clients, you can be sure that it's a promise that Rodenhiser delivers on every day.


Avatar for Colon Plumbing LLC
Colon Plumbing LLC
5023 Washington Street
5.00(
10
)
Approved Pro
Colon Plumbing LLC
5023 Washington Street
5.00(
10
)
Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
16 local quotes requested

At Colon Plumbing LLC. We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. We clean as we go. Estimates $110.00 credit toward Job

"Personable and efficient. Very happy."

Frank O on March 2025

At Colon Plumbing LLC. We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. We clean as we go. Estimates $110.00 credit toward Job

"Personable and efficient. Very happy."

Frank O on March 2025


Avatar for Advanced Energy Concepts of Worcester, Inc.
Advanced Energy Concepts of Worcester, Inc.
153 Southbridge Street
4.44(
122
)
Approved Pro
Advanced Energy Concepts of Worcester, Inc.
153 Southbridge Street
4.44(
122
)
Approved Pro
Customers say: Quality work
32 local quotes requested
35 years of experience

Advanced Energy Concepts was established in your community in 1990. Our main focus is energy conservation. Advanced Energy concepts also does a variety of plumbing services for your residential home

"Terrible customer service He created giant messes and lied to me on multiple occasions. I will say anything to get the project and not actually answer questions. When they came to give the quote, I asked them where they would put the heat pump and I said behind the house, but when they went to install it, it would not fit behind the house according to code. I constantly had to hound them to finish the job. They started in the spring, and then they did not finish until the winter, after saying they could start in 2 weeks. They left me without heat on below-freezing days because they were not finished. They did not honor parts of the contract. charged for service even though the contract says it is free for 3 years. They tried to charge me for things they did not install(humidifier). Installed the ventilation system over some sill rot. I left gaping holes in my home for months. I had to hound them every step of the way to get them to do the next part of the project. They were replacing propane and oil with gas and did not tell me I had to remove the propane to do so, and then the town would not permit their work and I had to pay out of pocket for more conversions. I had to hound them to get permits, including an oil tank removal permit, which they never pulled and I still do not have! The end result was an expensive system that I think is misconfigured and ill-fitting for my home (it does not remove humidity properly). If you would like to do the project management yourself, hire this company. That said, there was one very nice technician, but I would not have them install anything."

Allison B on July 2022

Advanced Energy Concepts was established in your community in 1990. Our main focus is energy conservation. Advanced Energy concepts also does a variety of plumbing services for your residential home

"Terrible customer service He created giant messes and lied to me on multiple occasions. I will say anything to get the project and not actually answer questions. When they came to give the quote, I asked them where they would put the heat pump and I said behind the house, but when they went to install it, it would not fit behind the house according to code. I constantly had to hound them to finish the job. They started in the spring, and then they did not finish until the winter, after saying they could start in 2 weeks. They left me without heat on below-freezing days because they were not finished. They did not honor parts of the contract. charged for service even though the contract says it is free for 3 years. They tried to charge me for things they did not install(humidifier). Installed the ventilation system over some sill rot. I left gaping holes in my home for months. I had to hound them every step of the way to get them to do the next part of the project. They were replacing propane and oil with gas and did not tell me I had to remove the propane to do so, and then the town would not permit their work and I had to pay out of pocket for more conversions. I had to hound them to get permits, including an oil tank removal permit, which they never pulled and I still do not have! The end result was an expensive system that I think is misconfigured and ill-fitting for my home (it does not remove humidity properly). If you would like to do the project management yourself, hire this company. That said, there was one very nice technician, but I would not have them install anything."

Allison B on July 2022


Avatar for Caswell Plumbing & Heating
Caswell Plumbing & Heating
945 Concord Street, Unit 102
4.92(
41
)
Approved Pro
Caswell Plumbing & Heating
945 Concord Street, Unit 102
4.92(
41
)
Approved Pro
Customers say: True professional
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
22 local quotes requested

When looking for professional plumbing & heating installation and repair compony look no further than Caswell Plumbing and Heating. We have over 25 years experience providing prompt and reliable services. We will always meet and exceed all expectations. Give us a call; you will be glad you did.

"They are great. Very responsive and thorough"

Karen M on September 2024

When looking for professional plumbing & heating installation and repair compony look no further than Caswell Plumbing and Heating. We have over 25 years experience providing prompt and reliable services. We will always meet and exceed all expectations. Give us a call; you will be glad you did.

"They are great. Very responsive and thorough"

Karen M on September 2024

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Tankless water heater installations FAQs

Professional flushing services for tankless water heaters run about $200 per visit. This essential maintenance procedure eliminates mineral deposits from critical components, particularly the heat exchanger. While homeowners can purchase DIY flushing kits for $50 to $100, professional service offers the advantage of thorough cleaning with proper techniques. Professional maintenance also includes inspection of additional components that might need attention.

Industry experts and manufacturers recommend annual maintenance for tankless water heaters, with more frequent service (every six months) for homes with challenging water conditions. This regular attention prevents efficiency losses and extends the unit's operational lifespan. Watch for warning signs like reduced water temperature, inconsistent performance, or system error codes that might indicate maintenance is needed sooner than scheduled.

Neglecting regular maintenance allows mineral scale to accumulate within your system, restricting water flow and reducing heating efficiency. This forces your unit to work harder, consuming more energy while delivering less satisfactory performance. Over time, this strain can lead to component failures, inconsistent water temperatures, and premature system replacement. Additionally, most manufacturers require documentation of regular maintenance to honor warranty coverage for major components.

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