Top-rated tankless water heater installers.

Get matched with top tankless water heater installers 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 installers in Duxbury

Avatar for Eighthbend Plumbing, LLC
Eighthbend Plumbing, LLC
PO Box 297
5.00(
3
)
Approved Pro
Eighthbend Plumbing, LLC
PO Box 297
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
7 years of experience

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 start to 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.

"He was very efficient. He did the job in a timely manner."

Lynne M on September 2022

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 start to 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.

"He was very efficient. He did the job in a timely manner."

Lynne M on September 2022


Justin Pierson, Licensed Plumber
74 Elliot Lane
5.00(
19
)
Approved Pro
Justin Pierson, Licensed Plumber
74 Elliot Lane
5.00(
19
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
17 years of experience

Justin Pierson, Licensed Plumber has been in business for several years and would love the opportunity to show you what experience and expertise can mean for the overall value of your project.

"Justin was very responsive. Same day service. Excellent work product."

Alan P on August 2023

Justin Pierson, Licensed Plumber has been in business for several years and would love the opportunity to show you what experience and expertise can mean for the overall value of your project.

"Justin was very responsive. Same day service. Excellent work product."

Alan P on August 2023


Avatar for Mac's Plumbing and Heating
Mac's Plumbing and Heating
3 Wharf Ln
5.00(
12
)
Approved Pro
Mac's Plumbing and Heating
3 Wharf Ln
5.00(
12
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
4 years of experience

Mac's Plumbing and Heating s a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have several years of hands-on experience to provide innovative ideas and suggestions tailored to your projects. 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!

"Donnie did the install and he was fantastic. He put them both in in about 2 hrs and the place was spotless when he finished."

chuck d on December 2023

Mac's Plumbing and Heating s a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have several years of hands-on experience to provide innovative ideas and suggestions tailored to your projects. 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!

"Donnie did the install and he was fantastic. He put them both in in about 2 hrs and the place was spotless when he finished."

chuck d on December 2023


Avatar for Whalen Plumbing & Heating
Whalen Plumbing & Heating
7 Barbara Lane
4.82(
11
)
Approved Pro
Whalen Plumbing & Heating
7 Barbara Lane
4.82(
11
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
5 years of experience

We take great pride in our experience, expertise, quality and customer service that we provide to meet your needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to 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 a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"Ryan was very prompt. He took the extra step of checking with our town water supplier when another contractor told us our town water would be damaging to a tankless water heater. He also adjusted his estimate when we received a lower quote for part of the work we needed done. Thank you, Ryan!"

Joan S on December 2022

We take great pride in our experience, expertise, quality and customer service that we provide to meet your needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to 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 a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"Ryan was very prompt. He took the extra step of checking with our town water supplier when another contractor told us our town water would be damaging to a tankless water heater. He also adjusted his estimate when we received a lower quote for part of the work we needed done. Thank you, Ryan!"

Joan S on December 2022


Avatar for Trust 1 Services LLC
Trust 1 Services LLC
11 Newbury St
4.60(
10
)
Approved Pro
Trust 1 Services LLC
11 Newbury St
4.60(
10
)
Approved Pro
5 years of experience
Free onsite estimate

With over 100 years of experience, Trust 1 Heating, Cooling, Plumbing is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"I recently worked with Trust1 Services and the experience was fantastic. A technician came to my home and informed me that my system was outdated and broken. They provided me with options to either repair or replace it, but without any pressure. We decided to go with the replacement as it was the more economical choice in the long run. During the process, the owner, Anthony, stopped by to check on the job and express his gratitude for our business. He even brought pizza from Town Spa after learning that it was my favorite place. Anthony shared some stories about how he got started in the business, making the entire experience even more enjoyable. This was hands down the best experience we have ever had with a contractor. The work was exceptional, and the overall experience was amazing. Anthony truly impressed us."

Devon H on May 2025

With over 100 years of experience, Trust 1 Heating, Cooling, Plumbing is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"I recently worked with Trust1 Services and the experience was fantastic. A technician came to my home and informed me that my system was outdated and broken. They provided me with options to either repair or replace it, but without any pressure. We decided to go with the replacement as it was the more economical choice in the long run. During the process, the owner, Anthony, stopped by to check on the job and express his gratitude for our business. He even brought pizza from Town Spa after learning that it was my favorite place. Anthony shared some stories about how he got started in the business, making the entire experience even more enjoyable. This was hands down the best experience we have ever had with a contractor. The work was exceptional, and the overall experience was amazing. Anthony truly impressed us."

Devon H on May 2025


Avatar for JLG Plumbing
JLG Plumbing
66 Torrey St
5.00(
2
)
Approved Pro
JLG Plumbing
66 Torrey St
5.00(
2
)
Approved Pro
Customers say: Quick response
1 years of experience
Free onsite estimate

9+ years of experience! We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"I hired JLG Plumbing to replace the pipes under our kitchen sink. Jack responded quickly and professionally, he came to our house the next morning and took care of the problem efficiently. We are extremely pleased with the work he did, I highly recommend hiring him!"

Hannah F on May 2025

9+ years of experience! We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"I hired JLG Plumbing to replace the pipes under our kitchen sink. Jack responded quickly and professionally, he came to our house the next morning and took care of the problem efficiently. We are extremely pleased with the work he did, I highly recommend hiring him!"

Hannah F on May 2025


Avatar for RJ Laperle Plumbing & Heating
RJ Laperle Plumbing & Heating
PO Box 464
5.00(
1
)
Approved Pro
RJ Laperle Plumbing & Heating
PO Box 464
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

We take great pride in our experience, expertise, quality, and customer service that we provide. It is our mission to provide excellent workmanship, and complete customer satisfaction from start to completion of a project. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Amazing experience all around. Easy to schedule and to work with, good deal and amazing work installing a tankless water heater. I will definitely call for any future needs."

Danielle B on April 2018

We take great pride in our experience, expertise, quality, and customer service that we provide. It is our mission to provide excellent workmanship, and complete customer satisfaction from start to completion of a project. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Amazing experience all around. Easy to schedule and to work with, good deal and amazing work installing a tankless water heater. I will definitely call for any future needs."

Danielle B on April 2018


Avatar for Addario, Inc.
Addario, Inc.
2 Gill Street, Suite J
3.94(
221
)
Approved Pro
Addario, Inc.
2 Gill Street, Suite J
3.94(
221
)
Approved Pro
Customers say: True professional
977 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!

"The service was excellent "

James T 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!

"The service was excellent "

James T on May 2025


Steve Ricci & Sons
75 Knott Ave
4.72(
47
)
Approved Pro
Steve Ricci & Sons
75 Knott Ave
4.72(
47
)
Approved Pro
Super Service Award
Customers say: True professional
17 local quotes requested
6 years of experience

At Steve Ricci & Sons plumbing and heating we pride our company on reliability, great communication, integrity and quality work.from the small repairs to the larger jobs we are there for our customers

"Great company to work with, highly recommended. Steve was easy to work with, communication and attention to details was the biggest highlight. He did a complete rough and finish plumbing for us including water heater installation"

Jose T on April 2025

At Steve Ricci & Sons plumbing and heating we pride our company on reliability, great communication, integrity and quality work.from the small repairs to the larger jobs we are there for our customers

"Great company to work with, highly recommended. Steve was easy to work with, communication and attention to details was the biggest highlight. He did a complete rough and finish plumbing for us including water heater installation"

Jose T on April 2025


Avatar for ALV Tile
ALV Tile
Dante Ave
5.00(
1
)
Approved Pro
ALV Tile
Dante Ave
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1950 local quotes requested

With over 10 years of professional installation experience I expertly install new tile and make repairs in a clean timely manner for an affordable price! We also offer demolition!

"These guys were fantastic. We had replaced our kitchen tile without using Angi’s two years ago. They did a terrible job, not lining the tiles properly, not grouting properly, and they didn’t remove the issues at the base of the tiles, so overtime our tiles were cracking. The contractor had promised us he’d come back to finish the grouting when he left in Friday, but asked for payment. New homeowner mistake, I paid him. He never responded to my messages after that. ALV came in the same day I posted on Angi’s, gave a reasonable quote, and then bought the tiles we were looking at the next day. 3 days later, the project is complete, the grout finished, everything looks fantastic. 10/10 would use these guys again."

Conrad K on January 2025

With over 10 years of professional installation experience I expertly install new tile and make repairs in a clean timely manner for an affordable price! We also offer demolition!

"These guys were fantastic. We had replaced our kitchen tile without using Angi’s two years ago. They did a terrible job, not lining the tiles properly, not grouting properly, and they didn’t remove the issues at the base of the tiles, so overtime our tiles were cracking. The contractor had promised us he’d come back to finish the grouting when he left in Friday, but asked for payment. New homeowner mistake, I paid him. He never responded to my messages after that. ALV came in the same day I posted on Angi’s, gave a reasonable quote, and then bought the tiles we were looking at the next day. 3 days later, the project is complete, the grout finished, everything looks fantastic. 10/10 would use these guys again."

Conrad K on January 2025

...
Showing 1-10 of 928

Tankless water heater installations FAQs

Yes, although they have a higher upfront cost compared to traditional units, tankless water heaters can be worth the investment for many homeowners. They heat water on demand, eliminating standby energy losses and leading to 24% to 34% greater energy efficiency for homes using up to 41 gallons of hot water daily. Tankless units last longer—around 20 years with proper maintenance—and require less space than traditional units. They also reduce the risk of leaks and water damage since there's no tank to corrode and fail.

Tankless water heaters, including gas-powered models, do require electricity to operate components like the ignition and control systems. This means they won't function during a power outage. If you live in an area prone to outages and want to ensure a continuous hot water supply, consider installing a battery backup system or generator to keep your tankless water heater running when the power goes out.

You should set your tankless water heater to 120 degrees Fahrenheit for optimal safety and efficiency, as recommended by the U.S. Consumer Product Safety Commission. Setting the temperature at 120 degrees prevents scalding accidents, particularly for children and the elderly, and reduces energy consumption. Temperatures above 140 degrees increase the risk of burns and promote mineral buildup, which can decrease the system's efficiency.

A 20-minute shower uses 50 to 60 gallons of water, assuming a flow rate of 2.5 to 3 gallons per minute. A typical whole-house tankless water heater can produce 4 to 8 gallons of hot water per minute, providing continuous hot water for long showers. By installing low-flow showerheads and reducing shower time, you decrease water consumption and energy costs, maximizing the efficiency of your tankless system.

With proper maintenance, a tankless water heater lasts around 20 years, significantly longer than conventional tank water heaters, which last between 8 and 12 years. Regular inspections and timely repairs can further extend its lifespan. To keep your tankless system operating efficiently, have it inspected or serviced annually and address any minor issues promptly by contacting a local tankless water heater repair service.

The homeowners guide to tankless water heater installations
From average costs to expert advice, get all the answers you need to get your job done.
Toilet and bidet in bathroom
Apr 28, 2025
Apr 28, 2025
Use this guide to budget for bidet installation costs based on factors such as bidet type, attachments, features, parts, labor, and more.
water main being installed in yard
Apr 30, 2025
Apr 30, 2025
Budget for main water line replacement costs based on factors such as accessibility, depth, length, materials, permits, labor, and more.
Beautiful large white bathroom
Apr 30, 2025
Apr 30, 2025
Budget for walk-in bathtub costs based on factors such as bathtub type, labor, plumbing and electrical work, additional accessibility features, and more.
marble kitchen counter with gold faucet
Apr 28, 2025
Apr 28, 2025
Explore the average cost to replace a kitchen faucet with a professional plumber based on factors like faucet type, features, labor, and unexpected costs.
plumber installing sewer main pipes in the ground
Apr 25, 2025
Apr 25, 2025
Understand what goes into installing a sewer line, including materials, labor, permits, and potential landscaping considerations, to ensure a smooth and compliant connection to your local sewer system.
water main being repaired by plumbers
Apr 24, 2025
Apr 24, 2025
Main water line leak repair costs depend on how much of the line needs repair and other factors. Learn what influences the price before you take on this project.
Share project details to get started.