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Tankless water heater repair pros in Oyster Bay

Avatar for ANQOR PLUMBING & HEATING INC.
ANQOR PLUMBING & HEATING INC.
12 Saxon Ct
New on HomeAdvisorNew on Angi
Approved Pro
ANQOR PLUMBING & HEATING INC.
12 Saxon Ct
New on AngiNew on HomeAdvisor
Approved Pro
3 years of experience
Free onsite estimate

At ANQOR PLUMBING & HEATING INC. we pride our ourselves in quality, value, and service! We are experts in our trade and will do our best to keep you as educated as we can on your particular project. We look forward to earning your business! When you contact us, you'll be given the exceptional customer service you deserve, including free quotes, up-front pricing, and no hidden fees. These benefits are provided to our clients in order to show that our company genuinely cares about customer satisfaction. Give us a call today to schedule your free estimate!

At ANQOR PLUMBING & HEATING INC. we pride our ourselves in quality, value, and service! We are experts in our trade and will do our best to keep you as educated as we can on your particular project. We look forward to earning your business! When you contact us, you'll be given the exceptional customer service you deserve, including free quotes, up-front pricing, and no hidden fees. These benefits are provided to our clients in order to show that our company genuinely cares about customer satisfaction. Give us a call today to schedule your free estimate!


Avatar for Islandwide Plumbing and Heating, LLC
Islandwide Plumbing and Heating, LLC
170 Delaware Avenue
5.00(
1
)
Approved Pro
Islandwide Plumbing and Heating, LLC
170 Delaware Avenue
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
17 years of experience

At Islandwide Plumbing and Heating LLC I pride my company on reliability, great communication, integrity, and quality work. I am an expert in my trade and will do my best to keep you as educated as I can on your particular task or project. I look forward to earning your business!

"He is an awesome guy to work with! I would highly recommend him!"

Todd Y on August 2020

At Islandwide Plumbing and Heating LLC I pride my company on reliability, great communication, integrity, and quality work. I am an expert in my trade and will do my best to keep you as educated as I can on your particular task or project. I look forward to earning your business!

"He is an awesome guy to work with! I would highly recommend him!"

Todd Y on August 2020


Avatar for NYC Emergency Plumbing
NYC Emergency Plumbing
8046 246th St
4.75(
4
)
Approved Pro
NYC Emergency Plumbing
8046 246th St
4.75(
4
)
Approved Pro
1 years of experience
Free onsite estimate

NYC Emergency Plumbing is your number one choice for all your plumbing needs. Our commitment to quality is second to none, and we guarantee your complete satisfaction. We enjoy creating long term relationships with each of our clients and we look forward to working with you!

"I couldn’t be happier with the plumbing repair that was done. The service was prompt, the technician was courteous, and the problem was resolved without any hassle. It’s such a relief to have everything back in working order. Great job and thank you again for the excellent service!"

joshua g on June 2025

NYC Emergency Plumbing is your number one choice for all your plumbing needs. Our commitment to quality is second to none, and we guarantee your complete satisfaction. We enjoy creating long term relationships with each of our clients and we look forward to working with you!

"I couldn’t be happier with the plumbing repair that was done. The service was prompt, the technician was courteous, and the problem was resolved without any hassle. It’s such a relief to have everything back in working order. Great job and thank you again for the excellent service!"

joshua g on June 2025


Avatar for Universe Home Services, Inc.
Universe Home Services, Inc.
3782 Merrick Road
4.50(
361
)
Approved Pro
Universe Home Services, Inc.
3782 Merrick Road
4.50(
361
)
Approved Pro
Customers say: Quick response
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
62 local quotes requested

Since 1954, Universe Home Services, inc., has been proudly serving the Nassau County community and customers throughout the entire region. With Universe Home Services, one call solves it all! Their highly trained technicians offer everything from heating and air conditioning to plumbing to appliance repair and electrical services on Long Island and beyond. Whether you are dealing with an inefficient heating system, a noisy air conditioner, clogged toilet, broken dishwasher, or outdated electrical service panel, you can get the fast, affordable service you need with Universe Home Services. They go above and beyond to ensure that you are completely satisfied with the quality of their work, offering service guarantees and parts and labor guarantees on new HVAC installations.

"The town ordered an inspection of my mother’s home. After being stood up by different companies I scheduled an appointment with Universe. One of their plumbers, Brandon, called me to discuss what needed to be done. He came over on a Sunday to do an emergency plumbing inspection for the town. He was so caring & empathetic to the situation. He completed the inspection in a timely & efficient manner. He really was a blessing from above."

Karina B on December 2024

Since 1954, Universe Home Services, inc., has been proudly serving the Nassau County community and customers throughout the entire region. With Universe Home Services, one call solves it all! Their highly trained technicians offer everything from heating and air conditioning to plumbing to appliance repair and electrical services on Long Island and beyond. Whether you are dealing with an inefficient heating system, a noisy air conditioner, clogged toilet, broken dishwasher, or outdated electrical service panel, you can get the fast, affordable service you need with Universe Home Services. They go above and beyond to ensure that you are completely satisfied with the quality of their work, offering service guarantees and parts and labor guarantees on new HVAC installations.

"The town ordered an inspection of my mother’s home. After being stood up by different companies I scheduled an appointment with Universe. One of their plumbers, Brandon, called me to discuss what needed to be done. He came over on a Sunday to do an emergency plumbing inspection for the town. He was so caring & empathetic to the situation. He completed the inspection in a timely & efficient manner. He really was a blessing from above."

Karina B on December 2024


Avatar for J.A.D Mechanical
J.A.D Mechanical
1075 Steel Boulevard
5.00(
6
)
Approved Pro
J.A.D Mechanical
1075 Steel Boulevard
5.00(
6
)
Approved Pro
27 years of experience
Free onsite estimate

With over 24 years of experience, J.A.D. Mechanical, 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. Call us today!

"I had a broken and corroded water main valve in my home as well as another corroded valve I wanted replaced as one of them was dripping. They came in and were Absolutely professional, had all the appropriate tools, priced very well for the job I needed done, gave me a time when he would be there and was right on time. Excellent service and all around great person. I will be saving the contact information for the future. "

Richard H on May 2025

With over 24 years of experience, J.A.D. Mechanical, 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. Call us today!

"I had a broken and corroded water main valve in my home as well as another corroded valve I wanted replaced as one of them was dripping. They came in and were Absolutely professional, had all the appropriate tools, priced very well for the job I needed done, gave me a time when he would be there and was right on time. Excellent service and all around great person. I will be saving the contact information for the future. "

Richard H on May 2025


Top Gun Kitchen & Cabinets
110 Brook Ave C
5.00(
11
)
Approved Pro
Top Gun Kitchen & Cabinets
110 Brook Ave C
5.00(
11
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
618 local quotes requested

Full service Kitchen Remodeling company. Specializing in cabinet painting and kitchen face lifts with over 25 years experience. Free consultations. ZERO pressure sales. Let us save you thousands. Call today.

"The work went very well Robert was pleasant, easy to to talk to and very skilled!. He repaired and touched up cabinet doors. They matched perfectly. He is vey dependable. I highly recommend him. I was really thrilled with the work he did!"

Alice C on April 2025

Full service Kitchen Remodeling company. Specializing in cabinet painting and kitchen face lifts with over 25 years experience. Free consultations. ZERO pressure sales. Let us save you thousands. Call today.

"The work went very well Robert was pleasant, easy to to talk to and very skilled!. He repaired and touched up cabinet doors. They matched perfectly. He is vey dependable. I highly recommend him. I was really thrilled with the work he did!"

Alice C on April 2025


Avatar for AR Home Construction
AR Home Construction
25 Berry Hill Rd
5.00(
29
)
Approved Pro
AR Home Construction
25 Berry Hill Rd
5.00(
29
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
634 local quotes requested

A.R. Home Construction is a premier design and build construction company specializing in luxury new home construction and high-end remodeling projects. With expertise in all aspects of construction, from conceptual design to final touches, A.R. Home Construction delivers exquisite and luxurious transformations. Our team of skilled professionals is dedicated to exceeding client expectations and creating stunning spaces that reflect unparalleled craftsmanship. Explore luxury and sophistication at our home design showroom, offering a curated selection of top -quality products for your project.

"Completed beyond on expectations. Total Transformation. One comment by our neighbors - You have raised the bar for the community."

Christy V on October 2024

A.R. Home Construction is a premier design and build construction company specializing in luxury new home construction and high-end remodeling projects. With expertise in all aspects of construction, from conceptual design to final touches, A.R. Home Construction delivers exquisite and luxurious transformations. Our team of skilled professionals is dedicated to exceeding client expectations and creating stunning spaces that reflect unparalleled craftsmanship. Explore luxury and sophistication at our home design showroom, offering a curated selection of top -quality products for your project.

"Completed beyond on expectations. Total Transformation. One comment by our neighbors - You have raised the bar for the community."

Christy V on October 2024


Avatar for Classic Remodeling Group Inc
Classic Remodeling Group Inc
1839 Bellmore Ave
4.79(
43
)
Approved Pro
Classic Remodeling Group Inc
1839 Bellmore Ave
4.79(
43
)
Approved Pro
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
2401 local quotes requested

Full service remodeling, roofing and siding contractors serving Long Island. Whether you are in need of new roof installation, roof restoration, or roof repairs; new siding installation, siding repairs; new windows & doors installation; kitchen remodeling; bathroom remodeling; we are the Long Island home remodeling contractors to call, due to our professionalism and affordability.

"John and his crew did a fabulous job renovating my bathroom. It was done in a timely manner and they were extremely neat and cleaned up very well after themselves. I would definitely hire them again!"

Denise S on March 2025

Full service remodeling, roofing and siding contractors serving Long Island. Whether you are in need of new roof installation, roof restoration, or roof repairs; new siding installation, siding repairs; new windows & doors installation; kitchen remodeling; bathroom remodeling; we are the Long Island home remodeling contractors to call, due to our professionalism and affordability.

"John and his crew did a fabulous job renovating my bathroom. It was done in a timely manner and they were extremely neat and cleaned up very well after themselves. I would definitely hire them again!"

Denise S on March 2025


Avatar for JBL HOME IMPROVEMENTS INC
JBL HOME IMPROVEMENTS INC
PO BOX 584
4.67(
255
)
Approved Pro
JBL HOME IMPROVEMENTS INC
PO BOX 584
4.67(
255
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
2113 local quotes requested

JBL Home Improvements, Inc, located in St. James, is a family owned and operated remodeling business specializing in residential projects. Owner & Contractor David Kaplan, General Manager Jill Kaplan, along with their team of talented professionals, are dedicated to providing outstanding workmanship and customer service to homeowners who live in their community.

"JBL Home Improvements is a great company to work with. Dave and Jill are friendly, helpful, reliable and punctual! When they stay they will start, the do. They are there early each day and keep things as tidy as possible. For our recent job they finished just 1 day past the expected time-frame. Considering the many stories you probably have heard - the timing was spot on! They have great resources and talented workers who did an excellent job installing new floors and a new set of stairs, as well as new doors, sheet rock and molding! Highly recommend using JBL Home Improvements!"

Jeff G on March 2025

JBL Home Improvements, Inc, located in St. James, is a family owned and operated remodeling business specializing in residential projects. Owner & Contractor David Kaplan, General Manager Jill Kaplan, along with their team of talented professionals, are dedicated to providing outstanding workmanship and customer service to homeowners who live in their community.

"JBL Home Improvements is a great company to work with. Dave and Jill are friendly, helpful, reliable and punctual! When they stay they will start, the do. They are there early each day and keep things as tidy as possible. For our recent job they finished just 1 day past the expected time-frame. Considering the many stories you probably have heard - the timing was spot on! They have great resources and talented workers who did an excellent job installing new floors and a new set of stairs, as well as new doors, sheet rock and molding! Highly recommend using JBL Home Improvements!"

Jeff G on March 2025


Avatar for TAS Construction Corporation
TAS Construction Corporation
1879 Park Ave
4.92(
12
)
Approved Pro
TAS Construction Corporation
1879 Park Ave
4.92(
12
)
Approved Pro
Customers say: Quick response
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
761 local quotes requested

TAS Construction was established in 1996. I personally have 46 years of experience in construction and I take pride in holding customers' hands throughout projects from beginning to end. We pass along any discounts we get from our suppliers onto our customers and we treat your home like it's our own. We look forward to helping you in your construction needs.

"Very well."

Bob S on August 2024

TAS Construction was established in 1996. I personally have 46 years of experience in construction and I take pride in holding customers' hands throughout projects from beginning to end. We pass along any discounts we get from our suppliers onto our customers and we treat your home like it's our own. We look forward to helping you in your construction needs.

"Very well."

Bob S on August 2024

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FAQs for tankless water heater installation projects in Oyster Bay, NY

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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