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Tankless water heater installers in Cohasset

Avatar for EAST Plumbing & Heating
EAST Plumbing & Heating
7 Stuart Ave
5.00(
13
)
Approved Pro
EAST Plumbing & Heating
7 Stuart Ave
5.00(
13
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
12 local quotes requested

East Plumbing and Heating delivers top-quality plumbing and heating services to the community. With years of experience, reliable, efficient, and affordable solutions are provided for both residential and commercial projects. From routine maintenance and emergency repairs to new installations and system upgrades, East Plumbing and Heating ensures exceptional results. A strong commitment to outstanding customer service, quick response times, and complete satisfaction sets this service apart. When dependable service is needed, East Plumbing and Heating is the trusted partner. Services Offered: Plumbing Repairs and Installations Heating System Maintenance and Installations Water Heater Services Emergency Plumbing and Heating Services System Upgrades and Efficiency Improvements Experience the East Plumbing and Heating difference—where comfort and satisfaction are the top priorities.

"Tad was on time, efficient, professional, improved my existing rusted pipe lines replacing them with copper and affordable. Very pleased with the outcome."

Dee J on October 2024

East Plumbing and Heating delivers top-quality plumbing and heating services to the community. With years of experience, reliable, efficient, and affordable solutions are provided for both residential and commercial projects. From routine maintenance and emergency repairs to new installations and system upgrades, East Plumbing and Heating ensures exceptional results. A strong commitment to outstanding customer service, quick response times, and complete satisfaction sets this service apart. When dependable service is needed, East Plumbing and Heating is the trusted partner. Services Offered: Plumbing Repairs and Installations Heating System Maintenance and Installations Water Heater Services Emergency Plumbing and Heating Services System Upgrades and Efficiency Improvements Experience the East Plumbing and Heating difference—where comfort and satisfaction are the top priorities.

"Tad was on time, efficient, professional, improved my existing rusted pipe lines replacing them with copper and affordable. Very pleased with the outcome."

Dee J on October 2024


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 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 Comfort Cool Mass
Comfort Cool Mass
80 South St, Apt. 2
4.88(
8
)
Approved Pro
Comfort Cool Mass
80 South St, Apt. 2
4.88(
8
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

With several years experience, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. We welcome your questions.

"Giovanni Colon was extremely competent, informed and well spoken. I would definitely recommend him."

Jonathan M on July 2023

With several years experience, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. We welcome your questions.

"Giovanni Colon was extremely competent, informed and well spoken. I would definitely recommend him."

Jonathan M on July 2023


M.A. Paone Plumbing & Heating
429 Watertown St, Ste 201
4.65(
421
)
Approved Pro
M.A. Paone Plumbing & Heating
429 Watertown St, Ste 201
4.65(
421
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
24 local quotes requested

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.

"Michael is the BEST! No mansplaining and he patiently answered an abundance of my questions offering flexibility in solutions. He is knowledgable, quick and had the best rate. I am so appreciative! Thank you!"

Elyse G on March 2025

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.

"Michael is the BEST! No mansplaining and he patiently answered an abundance of my questions offering flexibility in solutions. He is knowledgable, quick and had the best rate. I am so appreciative! Thank you!"

Elyse G on March 2025


Avatar for JLG Plumbing
JLG Plumbing
66 Torrey St
New on HomeAdvisorNew on Angi
Approved Pro
JLG Plumbing
66 Torrey St
New on AngiNew on HomeAdvisor
Approved Pro
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.

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.


Jordans Plumbing and Heating
16 Highland Road
4.87(
214
)
Approved Pro
Jordans Plumbing and Heating
16 Highland Road
4.87(
214
)
Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
65 local quotes requested

We are dedicated to providing our clients with the very best in service, installation, and repair for all phases of your plumbing needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail put into each of the projects we are involved with. We are 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.

"Really fast response to my inquiry. Work was done with in a week.very fast and professional. Will be using for any future plumbing problems."

Jonathan K on April 2025

We are dedicated to providing our clients with the very best in service, installation, and repair for all phases of your plumbing needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail put into each of the projects we are involved with. We are 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.

"Really fast response to my inquiry. Work was done with in a week.very fast and professional. Will be using for any future plumbing problems."

Jonathan K on April 2025


Avatar for Addario, Inc.
Addario, Inc.
2 Gill Street, Suite J
3.93(
220
)
Approved Pro
Addario, Inc.
2 Gill Street, Suite J
3.93(
220
)
Approved Pro
Customers say: True professional
1041 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!

"I am genuinely flabbergasted that this company has so many five star reviews. From the marketing practices to their customer service, my frustration with them was pervasive. The work they did seemed to be fine enough, but it was overpriced (I later discovered) and their communication at several stages was just abysmal. My attempts to have them remedy the shortcomings of their process gained no satisfaction. It also left a really, really bad taste to discover that their signs plastered all over the furnaces and water heaters in the basement of our condo building was not because they had some kind of relationship with the condo *and in most cases had no relationship with the equipment that their signs were on*. Just obnoxious. To top it all off, someone my email address was leaked from their organization which led to it being the target of hacking. How would I know it was them? They were the only company that I had given that particular email address to, Then they had the nerve to ask for a customer testimonial video. As if. Would not do business with them again."

Dave L on November 2024

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!

"I am genuinely flabbergasted that this company has so many five star reviews. From the marketing practices to their customer service, my frustration with them was pervasive. The work they did seemed to be fine enough, but it was overpriced (I later discovered) and their communication at several stages was just abysmal. My attempts to have them remedy the shortcomings of their process gained no satisfaction. It also left a really, really bad taste to discover that their signs plastered all over the furnaces and water heaters in the basement of our condo building was not because they had some kind of relationship with the condo *and in most cases had no relationship with the equipment that their signs were on*. Just obnoxious. To top it all off, someone my email address was leaked from their organization which led to it being the target of hacking. How would I know it was them? They were the only company that I had given that particular email address to, Then they had the nerve to ask for a customer testimonial video. As if. Would not do business with them again."

Dave L on November 2024


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 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
1650 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

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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.
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