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Tankless water heater repair pros in North Haven

Avatar for Jefferson Plumbing
Jefferson Plumbing
373 Hill Street
4.92(
19
)
Approved Pro
Jefferson Plumbing
373 Hill Street
4.92(
19
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
21 years of experience

Our mission at Jefferson Plumbing is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on a home owners face at the end of a project! Jefferson Plumbing stacks up with the competition and surpasses it with competitive prices, second to none workmanship and a prompt/responsive team! We give you quality that you can measure, and a finished product that will enhance your home forever. Call us today! (203) 859-8718

"Amazing work, outstanding price and Lightening fast."

Robert R on December 2024

Our mission at Jefferson Plumbing is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on a home owners face at the end of a project! Jefferson Plumbing stacks up with the competition and surpasses it with competitive prices, second to none workmanship and a prompt/responsive team! We give you quality that you can measure, and a finished product that will enhance your home forever. Call us today! (203) 859-8718

"Amazing work, outstanding price and Lightening fast."

Robert R on December 2024


Avatar for E and R Mechanical
E and R Mechanical
410 W River St
4.73(
238
)
Approved Pro
E and R Mechanical
410 W River St
4.73(
238
)
Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
83 local quotes requested

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects, no matter how big, or small. We are experts in our trade, and will always keep you educated on your particular task or project. We look forward to earning your business.

"They were very professional, punctual, and overall great!"

julius f on May 2025

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects, no matter how big, or small. We are experts in our trade, and will always keep you educated on your particular task or project. We look forward to earning your business.

"They were very professional, punctual, and overall great!"

julius f on May 2025


Avatar for Airtech Heating and Cooling, LLC
Airtech Heating and Cooling, LLC
12 Summer Island Point
4.78(
32
)
Approved Pro
Airtech Heating and Cooling, LLC
12 Summer Island Point
4.78(
32
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
17 years of experience

Airtech Heating and Cooling, LLC, is a New Haven locally owned and operated company that values quality in all aspects of business. The cornerstone of our service is responsiveness with professional quality guaranteed. We have over 40 years experience in the heating and cooling industry. Our services are customized to your individual needs, paying close attention to the details of your project. We look forward to gaining you as another satisfied customer.

"AirTech and Mark Miller responded by calling me almost immediately after my online inquiry to Home Advisor's for service on my gas furnace. It was on December 23rd, Saturday approximately 6pm. He came within the hour and fixed the problem with my furnace. Considering a weekend, after hours and also a holiday weekend at that, extremely reasonable price. I would use them again and I would recommend them highly, as well."

Pat H on January 2024

Airtech Heating and Cooling, LLC, is a New Haven locally owned and operated company that values quality in all aspects of business. The cornerstone of our service is responsiveness with professional quality guaranteed. We have over 40 years experience in the heating and cooling industry. Our services are customized to your individual needs, paying close attention to the details of your project. We look forward to gaining you as another satisfied customer.

"AirTech and Mark Miller responded by calling me almost immediately after my online inquiry to Home Advisor's for service on my gas furnace. It was on December 23rd, Saturday approximately 6pm. He came within the hour and fixed the problem with my furnace. Considering a weekend, after hours and also a holiday weekend at that, extremely reasonable price. I would use them again and I would recommend them highly, as well."

Pat H on January 2024


Avatar for Connecticut Custom Creations
Connecticut Custom Creations
260 Hartford Avenue
4.82(
22
)
Approved Pro
Connecticut Custom Creations
260 Hartford Avenue
4.82(
22
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
1062 local quotes requested

At Connecticut Custom Creations™, we specialize in transforming kitchens, bathrooms, basements, and attics into beautiful, functional spaces tailored to your needs. We take great pride in helping people build their dream homes, a core value that drives everything we do. As an owner-operated business with over a decade of experience, I bring seasoned expertise to every project, no matter the size. Whether it’s a small renovation or a large-scale remodel, we’re committed to delivering exceptional results with care and precision.

"I'm amazed of how my shower upgrade turned out. I still can't believe cts creation finished in one day. I recommend cts creation to anybody and everybody. They killed it!"

Zach t on August 2024

At Connecticut Custom Creations™, we specialize in transforming kitchens, bathrooms, basements, and attics into beautiful, functional spaces tailored to your needs. We take great pride in helping people build their dream homes, a core value that drives everything we do. As an owner-operated business with over a decade of experience, I bring seasoned expertise to every project, no matter the size. Whether it’s a small renovation or a large-scale remodel, we’re committed to delivering exceptional results with care and precision.

"I'm amazed of how my shower upgrade turned out. I still can't believe cts creation finished in one day. I recommend cts creation to anybody and everybody. They killed it!"

Zach t on August 2024


Avatar for Long Home Products
Long Home Products
16 International Dr
5.00(
1
)
Approved Pro
Long Home Products
16 International Dr
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2799 local quotes requested

With over 70 years of experience in home improvement, Long Home Products is the industry-leading company you can trust to give you peace of mind. We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We are experts in all aspects of roofing, bathroom, window and door projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

"Quick, one day service, cleaned up after, friendly they even double checked with us before installing safety handles and shelves to make sure they were exactly where we wanted them."

Shelley A on March 2025

With over 70 years of experience in home improvement, Long Home Products is the industry-leading company you can trust to give you peace of mind. We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We are experts in all aspects of roofing, bathroom, window and door projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

"Quick, one day service, cleaned up after, friendly they even double checked with us before installing safety handles and shelves to make sure they were exactly where we wanted them."

Shelley A on March 2025


Avatar for Custom Build and Remodeling, LLC
Custom Build and Remodeling, LLC
Wildflower Drive
5.00(
4
)
Approved Pro
Custom Build and Remodeling, LLC
Wildflower Drive
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1073 local quotes requested

We are dedicated to providing our clients with the very best in excavation and building site services. We specialize in residential and commercial services and 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.

"Fast quote and service with high quality work! Happy about everything with our remodel"

Ryan B on May 2025

We are dedicated to providing our clients with the very best in excavation and building site services. We specialize in residential and commercial services and 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.

"Fast quote and service with high quality work! Happy about everything with our remodel"

Ryan B on May 2025


Avatar for Rdo Construction LLC
Rdo Construction LLC
171 Payne Dr
5.00(
6
)
Approved Pro
Rdo Construction LLC
171 Payne Dr
5.00(
6
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
827 local quotes requested

RDO Construction LLC is a premier general contracting company dedicated to delivering high-quality construction services across residential and commercial sectors. With a commitment to excellence, our team of skilled professionals combines expertise, innovation, and integrity to build structures that meet our clients' needs and stand the test of time.

"This company is fabulous. Renald and his workers gave a great estimate, and did the job flawlessly designing and executing the building of my exquisite patio. He met us at the supply house to help us pick out materials, he took a personal interest. Beside our beautiful patio, I had him redo our fireplace which looks like a work of art! And since the chimney needed some attention, they fixed some problems with the chimney. All work was beautifully done. I recommended this company to friends of mine, and they hired Renald and his crew and got back to me as to how terrific they found his work and the ease it was to work with them. This is how things should be....attention to detail, quality craftsmanship! I'm happy I could submit this review!"

Matt V on March 2025

RDO Construction LLC is a premier general contracting company dedicated to delivering high-quality construction services across residential and commercial sectors. With a commitment to excellence, our team of skilled professionals combines expertise, innovation, and integrity to build structures that meet our clients' needs and stand the test of time.

"This company is fabulous. Renald and his workers gave a great estimate, and did the job flawlessly designing and executing the building of my exquisite patio. He met us at the supply house to help us pick out materials, he took a personal interest. Beside our beautiful patio, I had him redo our fireplace which looks like a work of art! And since the chimney needed some attention, they fixed some problems with the chimney. All work was beautifully done. I recommended this company to friends of mine, and they hired Renald and his crew and got back to me as to how terrific they found his work and the ease it was to work with them. This is how things should be....attention to detail, quality craftsmanship! I'm happy I could submit this review!"

Matt V on March 2025


Avatar for Everything Under The Roof LLC
Everything Under The Roof LLC
PO Box 844
4.87(
39
)
Approved Pro
Everything Under The Roof LLC
PO Box 844
4.87(
39
)
Approved Pro
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
155 local quotes requested

We pride ourselves on being a unique construction company. Everything Under the Roof is an interior, residential construction company owned by Kim and Jay Spanier. At work we are a husband and wife team, but at home we are mom and dad, so we truly understand the importance of keeping your project orderly and on time, while keeping your family (including your pets) safe. We can also guarantee NO high pressure sales calls, and no crabby, condescending construction guys working on your home improvement project – just our family helping yours! Kim is your main point of contact through the project. She walks you through the construction process, acts as your personal construction jargon translator, and, most importantly, she is the budget master. Kim will help you shop for materials so that you stay on budget. Jay is the jobsite superintendent. He manages the day to day activities of your remodeling/construction project, he coordinates and manages the sub-contractors, and it’s his skillful carpentry that will transform your home. All of our projects work within the existing footprint of your house. What exactly does that mean? Well, in a nut shell, we don’t do additions, and we won’t raise your roof. We find all the hidden, un-used spaces in your house and re-create your floor plan to work for you and your family.

"Kim and Jay created a beautiful master bath for us. The combination of Kim’s selections and Jay’s workmanship was a perfect fit. They listened to our needs and fulfilled all of our expectations."

Rick L on May 2025

We pride ourselves on being a unique construction company. Everything Under the Roof is an interior, residential construction company owned by Kim and Jay Spanier. At work we are a husband and wife team, but at home we are mom and dad, so we truly understand the importance of keeping your project orderly and on time, while keeping your family (including your pets) safe. We can also guarantee NO high pressure sales calls, and no crabby, condescending construction guys working on your home improvement project – just our family helping yours! Kim is your main point of contact through the project. She walks you through the construction process, acts as your personal construction jargon translator, and, most importantly, she is the budget master. Kim will help you shop for materials so that you stay on budget. Jay is the jobsite superintendent. He manages the day to day activities of your remodeling/construction project, he coordinates and manages the sub-contractors, and it’s his skillful carpentry that will transform your home. All of our projects work within the existing footprint of your house. What exactly does that mean? Well, in a nut shell, we don’t do additions, and we won’t raise your roof. We find all the hidden, un-used spaces in your house and re-create your floor plan to work for you and your family.

"Kim and Jay created a beautiful master bath for us. The combination of Kim’s selections and Jay’s workmanship was a perfect fit. They listened to our needs and fulfilled all of our expectations."

Rick L on May 2025


Avatar for  Elite Remodeling Services LLC
Elite Remodeling Services LLC
29 Deerfield Lane
5.00(
5
)
Approved Pro
Elite Remodeling Services LLC
29 Deerfield Lane
5.00(
5
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1970 local quotes requested

10 years worth of construction experience in various industries.

"Mike and his crew were wonderful, knowledgable, professional and efficient. The quality of the work was outstanding and the whole process was smooth and easy! Can’t recommend them highly enough!"

Brianna P on November 2024

10 years worth of construction experience in various industries.

"Mike and his crew were wonderful, knowledgable, professional and efficient. The quality of the work was outstanding and the whole process was smooth and easy! Can’t recommend them highly enough!"

Brianna P on November 2024


Avatar for Wps remodeling
Wps remodeling
40a Brookside Ave E
4.96(
24
)
Approved Pro
Wps remodeling
40a Brookside Ave E
4.96(
24
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
322 local quotes requested

Remodeling general, kitchen, bathroom, finish carpentry and framing, small addition and decks. We do not offer solar panel installation or services.

"Very professional, if I called I received a response right away. I live my newly remodeled bathroom."

Diane g on February 2025

Remodeling general, kitchen, bathroom, finish carpentry and framing, small addition and decks. We do not offer solar panel installation or services.

"Very professional, if I called I received a response right away. I live my newly remodeled bathroom."

Diane g on February 2025

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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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