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Tankless water heater repair pros in Worcester

DL Plumbing and Heating
146A Cental St
New on HomeAdvisorNew on Angi
Approved Pro
DL Plumbing and Heating
146A Cental St
New on AngiNew on HomeAdvisor
Approved Pro
5 years of experience
Free onsite estimate

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Call Today!

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Call Today!


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
37 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 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
234 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 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
998 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 MillTown Plumbing, Heating, Cooling and Electrical - Plumbing
MillTown Plumbing, Heating, Cooling and Electrical - Plumbing
131 Steadman Street, Suite 6
4.51(
309
)
Approved Pro
MillTown Plumbing, Heating, Cooling and Electrical - Plumbing
131 Steadman Street, Suite 6
4.51(
309
)
Approved Pro
Customers say: Quick response
74 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.

"STAY AWAY. Numerous issues and they will cost you more money without you knowing it. I just found out that I was on a **DO NOT SERVICE** list (after all the grief they have given me.) I am ticked off. Here is a summary due to the character limit: 1. They installed a faulty HTP tankless hybrid water heater. I argued with them for what I think was a good year before a HTP tech finally determined that I was right. Replaced it with a Rinnai RUR199in. 2. They took (stole) my oval ductwork and replaced it. I was fine with the replacement. I looked the other way but it was expensive and they never asked - they just hauled it away. Most homeowners probably do not realize how expensive and unusual that oval ductwork is. I could have even recycled it at a profit. 3. I recommended them to a neighbor only to find cops all over their home one day. Their plumber stole their special needs kids controlled medications after having them go into other rooms to turn on and off the faucets. I just chalked it up to a bad apple. 4. HUGE ROOKIE mistake. They short-cycled the new air handler. Vent was right next to the main return (2in. away.) Unecessary wear and tear, high electric and gas usage, and discomfort. Whatever was coming out was immediately suck back in. Unfortunately I did not realize this until a couple years later. 5. HUGE ROOKIE mistake. They never installed the 2-stage wiring. See directly above. Look it up. HUGE discrepancies in temperatures and sky high bills. Premature wear and tear. I wrote Freddy Jr. about this which might be the reason why I am on their list. But still, that is their job to get it right and not mine. Most people would have no clue for the life of their system. 6. They did not hook up the high-limit kill switch/float on the condensation pump which led to a flood and destroyed antiques. I hooked it up in less than 10 minutes. 7. I was told one day that the original manger was fired because he was skimming clients from the company. 8. There is no check valve on the recirculation line which they installed on the new tankless they replaced. I believe it is code and now I have to hire someone else ([business name removed]) to fix their screwup which likely killed my internal recirculation pump. Again, unecessary wear and tear along with high energy bills. I was willing to look the other way on so many things but the truth is they get away with this because most homeowners do not know any better. In other cases, I figured that no one is perfect and we all make mistakes. But then to find out that I was blacklisted a few years later because I called them out on their BS after I needed their help yesterday? The only thing I can think is that I ended up costing them more money on things they should have done properly in the first place. It is a company that needs better oversight and apparently has awful management. I am not bragging but I have an advanced engineeering background creating petroleum engineering training material for big oil (aka plumbing on steroids--makes this look like childs play), programming, developing systems for hydroponics, working with heat and waste recovery systems, fixing combustion engines, and building computers for over 20 years. My point is that I noticed a lot of things that most people would overlook because I know how many things work. I called them out and that is the only explanation as to why I could have been blacklisted. But do yourself a favor and go with [business name removed] or [business name removed] instead. It is not to say that others cannot screw up, but this is my experience with them and the straw that broke the camels back. Mention that you read this here and thank you. Perhaps the next company will not mess you up under the guise/protection of teamsters and protectionist unions that overcharge with ridiculous licensing requirements that ends up meani..."

Charles L on January 2024

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.

"STAY AWAY. Numerous issues and they will cost you more money without you knowing it. I just found out that I was on a **DO NOT SERVICE** list (after all the grief they have given me.) I am ticked off. Here is a summary due to the character limit: 1. They installed a faulty HTP tankless hybrid water heater. I argued with them for what I think was a good year before a HTP tech finally determined that I was right. Replaced it with a Rinnai RUR199in. 2. They took (stole) my oval ductwork and replaced it. I was fine with the replacement. I looked the other way but it was expensive and they never asked - they just hauled it away. Most homeowners probably do not realize how expensive and unusual that oval ductwork is. I could have even recycled it at a profit. 3. I recommended them to a neighbor only to find cops all over their home one day. Their plumber stole their special needs kids controlled medications after having them go into other rooms to turn on and off the faucets. I just chalked it up to a bad apple. 4. HUGE ROOKIE mistake. They short-cycled the new air handler. Vent was right next to the main return (2in. away.) Unecessary wear and tear, high electric and gas usage, and discomfort. Whatever was coming out was immediately suck back in. Unfortunately I did not realize this until a couple years later. 5. HUGE ROOKIE mistake. They never installed the 2-stage wiring. See directly above. Look it up. HUGE discrepancies in temperatures and sky high bills. Premature wear and tear. I wrote Freddy Jr. about this which might be the reason why I am on their list. But still, that is their job to get it right and not mine. Most people would have no clue for the life of their system. 6. They did not hook up the high-limit kill switch/float on the condensation pump which led to a flood and destroyed antiques. I hooked it up in less than 10 minutes. 7. I was told one day that the original manger was fired because he was skimming clients from the company. 8. There is no check valve on the recirculation line which they installed on the new tankless they replaced. I believe it is code and now I have to hire someone else ([business name removed]) to fix their screwup which likely killed my internal recirculation pump. Again, unecessary wear and tear along with high energy bills. I was willing to look the other way on so many things but the truth is they get away with this because most homeowners do not know any better. In other cases, I figured that no one is perfect and we all make mistakes. But then to find out that I was blacklisted a few years later because I called them out on their BS after I needed their help yesterday? The only thing I can think is that I ended up costing them more money on things they should have done properly in the first place. It is a company that needs better oversight and apparently has awful management. I am not bragging but I have an advanced engineeering background creating petroleum engineering training material for big oil (aka plumbing on steroids--makes this look like childs play), programming, developing systems for hydroponics, working with heat and waste recovery systems, fixing combustion engines, and building computers for over 20 years. My point is that I noticed a lot of things that most people would overlook because I know how many things work. I called them out and that is the only explanation as to why I could have been blacklisted. But do yourself a favor and go with [business name removed] or [business name removed] instead. It is not to say that others cannot screw up, but this is my experience with them and the straw that broke the camels back. Mention that you read this here and thank you. Perhaps the next company will not mess you up under the guise/protection of teamsters and protectionist unions that overcharge with ridiculous licensing requirements that ends up meani..."

Charles L on January 2024


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
125 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 S.A.A.B. Plumbing and Heating, Inc.
S.A.A.B. Plumbing and Heating, Inc.
9 Summer Street
4.68(
11
)
Approved Pro
S.A.A.B. Plumbing and Heating, Inc.
9 Summer Street
4.68(
11
)
Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
10 years of experience

Hiring a plumber can be difficult because they are going to be working inside of your home. You want to have someone that you can trust; someone who will give a professional appearance and will treat you with respect. As a local plumber, we recognize the need to care for people and to respect their property. You will recognize that factor from the moment that you contact us and we will continue to make you comfortable as we get the job done. Having plumbing problems is more than just an inconvenience, it can be devastating. When you have a plumber you can trust and that is reliable to get the job done, it takes a lot of the pressure off of you as the homeowner. Contact us if you have any plumbing need and rest assured, we will care for that need professionally. We look forward to working with you!

"Came same day I called and repaired my leaking pipes in just a couple hours! Great service and friendly technician."

Zachary G on April 2021

Hiring a plumber can be difficult because they are going to be working inside of your home. You want to have someone that you can trust; someone who will give a professional appearance and will treat you with respect. As a local plumber, we recognize the need to care for people and to respect their property. You will recognize that factor from the moment that you contact us and we will continue to make you comfortable as we get the job done. Having plumbing problems is more than just an inconvenience, it can be devastating. When you have a plumber you can trust and that is reliable to get the job done, it takes a lot of the pressure off of you as the homeowner. Contact us if you have any plumbing need and rest assured, we will care for that need professionally. We look forward to working with you!

"Came same day I called and repaired my leaking pipes in just a couple hours! Great service and friendly technician."

Zachary G on April 2021


Avatar for Super Service Today Inc
Super Service Today Inc
4 Jewel Drive
3.62(
39
)
Approved Pro
Super Service Today Inc
4 Jewel Drive
3.62(
39
)
Approved Pro
Customers say: Super punctual
491 local quotes requested
15 years of experience

Super Service Today is a full service plumbing and drain cleaning company. Our team is experienced and fully equipped to solve your problem. We are your regular plumber's drain cleaning professional. Your home or business will be treated as if it were our own! Customer service is our number one priority and you will see first hand when you call! 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. We do not service Window AC units.

"Over charged my father for a backwater valve repair gave him an invoice with no specific breakdown on the job that was done. Had to request for a breakdown invoice Charged him $4k for a 4 hour job that was not done properly as the basement re flooded again. Gave me a run around for 3 weeks to get a breakdown on the invoice. As you can see from the screenshot.poor work Watch out for these guys. They don’t get the job done and they overcharge. We had to also pay for their the permits they were suppose to already have. And also pay for the rental truck and fuel! Second image is from the basement re flooded again after work was done"

Sheila S on March 2025

Super Service Today is a full service plumbing and drain cleaning company. Our team is experienced and fully equipped to solve your problem. We are your regular plumber's drain cleaning professional. Your home or business will be treated as if it were our own! Customer service is our number one priority and you will see first hand when you call! 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. We do not service Window AC units.

"Over charged my father for a backwater valve repair gave him an invoice with no specific breakdown on the job that was done. Had to request for a breakdown invoice Charged him $4k for a 4 hour job that was not done properly as the basement re flooded again. Gave me a run around for 3 weeks to get a breakdown on the invoice. As you can see from the screenshot.poor work Watch out for these guys. They don’t get the job done and they overcharge. We had to also pay for their the permits they were suppose to already have. And also pay for the rental truck and fuel! Second image is from the basement re flooded again after work was done"

Sheila S on March 2025


Avatar for Clear Water Pump & Well Service, Inc.
Clear Water Pump & Well Service, Inc.
PO Box 6
4.49(
37
)
Approved Pro
Clear Water Pump & Well Service, Inc.
PO Box 6
4.49(
37
)
Approved Pro
Customers say: Quality work
282 local quotes requested
14 years of experience

Clear Water Pump & Well Service, Inc. is your trusted partner for all your well, water filtration and pump service needs in Massachusetts and Rhode Island. With over 15 years of experience, we are the leading experts in the industry. Our commitment is to deliver exceptional service without compromising on quality, all at an affordable price. We have extensive knowledge of the latest technology in the Water Well Industry in Massachusetts and beyond, and our services are available throughout the region. Contact us today and let us earn your business.

"Good job done."

John N on November 2024

Clear Water Pump & Well Service, Inc. is your trusted partner for all your well, water filtration and pump service needs in Massachusetts and Rhode Island. With over 15 years of experience, we are the leading experts in the industry. Our commitment is to deliver exceptional service without compromising on quality, all at an affordable price. We have extensive knowledge of the latest technology in the Water Well Industry in Massachusetts and beyond, and our services are available throughout the region. Contact us today and let us earn your business.

"Good job done."

John N on November 2024


Avatar for Drain Defense
Drain Defense
19 East Street
4.14(
14
)
Approved Pro
Drain Defense
19 East Street
4.14(
14
)
Approved Pro
Customers say: Super punctual
126 local quotes requested
1 years of experience

We focus on all kinds of drainage blockage and drain cleaning! We can do anywhere from 1-1/2” line to 10” line. We also can do water jetting, grease issues, smaller drain cleaning (like for slow drain sinks, toilets, floor drains, etc), camera pipe inspections, underground pipe locating, and more! We offer a diverse range of services tailored to meet the unique needs of every customer. We take a personalized approach to each project. We work closely with our clients to understand their vision, preferences, and budgetary requirements. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!

"Fast, friendly service. They went the extra mile from the original job and fixed out basement sink. Thanks!"

Rob C on March 2025

We focus on all kinds of drainage blockage and drain cleaning! We can do anywhere from 1-1/2” line to 10” line. We also can do water jetting, grease issues, smaller drain cleaning (like for slow drain sinks, toilets, floor drains, etc), camera pipe inspections, underground pipe locating, and more! We offer a diverse range of services tailored to meet the unique needs of every customer. We take a personalized approach to each project. We work closely with our clients to understand their vision, preferences, and budgetary requirements. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!

"Fast, friendly service. They went the extra mile from the original job and fixed out basement sink. Thanks!"

Rob C on March 2025

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FAQs for tankless water heater installation projects in Worcester, MA

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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