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Tankless water heater repair pros in West Islip

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 Energywise, Inc.
Energywise, Inc.
2231 5th Avenue
New on HomeAdvisorNew on Angi
Approved Pro
Energywise, Inc.
2231 5th Avenue
New on AngiNew on HomeAdvisor
Approved Pro
40 years of experience
Emergency services offered

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers 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.

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers 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.


Avatar for Brandon Electric
Brandon Electric
56 Elm Drive North
4.88(
166
)
Approved Pro
Brandon Electric
56 Elm Drive North
4.88(
166
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
11 local quotes requested

Brandon specialize in HVAC [multi zone central air-condition system ,heat pump, swimming pool heater, mini split, wine cellar cooling system, gas or oil boiler and furnace ]repaired and installation and also do smart thermostat,wi-fi bridge stem , smart water main valve installations, .We take pride in our quality of work and our commitment to outstanding results. We are committed to providing a personalized service for each individual project we take on. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

"Brandon did an excellent job replacing our old pool heater. He is very knowledgeable and immediately responds to phone calls. I would highly recommend Brandon Electric."

Savva S on August 2024

Brandon specialize in HVAC [multi zone central air-condition system ,heat pump, swimming pool heater, mini split, wine cellar cooling system, gas or oil boiler and furnace ]repaired and installation and also do smart thermostat,wi-fi bridge stem , smart water main valve installations, .We take pride in our quality of work and our commitment to outstanding results. We are committed to providing a personalized service for each individual project we take on. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

"Brandon did an excellent job replacing our old pool heater. He is very knowledgeable and immediately responds to phone calls. I would highly recommend Brandon Electric."

Savva S on August 2024


Avatar for Tedco Group, Inc.
Tedco Group, Inc.
140 North 9th Street
4.54(
323
)
Approved Pro
Tedco Group, Inc.
140 North 9th Street
4.54(
323
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
15 years of experience

We are dedicated to providing our clients with the very best in service, installation, and repair for your heating and cooling needs. We are a locally owned and operated company that values honesty and integrity. We specialize in central A/C and cooling systems as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results and look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"Fantastic service. Job was completed quickly, and staff was clean."

Panagiotis S on May 2025

We are dedicated to providing our clients with the very best in service, installation, and repair for your heating and cooling needs. We are a locally owned and operated company that values honesty and integrity. We specialize in central A/C and cooling systems as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results and look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"Fantastic service. Job was completed quickly, and staff was clean."

Panagiotis S on May 2025


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


Avatar for BuildRite Pro Inc.
BuildRite Pro Inc.
Suffolk County
4.11(
19
)
Approved Pro
BuildRite Pro Inc.
Suffolk County
4.11(
19
)
Approved Pro
1430 local quotes requested
Free onsite estimate

Here at Bawa Construction Group, we sustain our business on quality and integrity. We are experts in general contracting specializing in all types of remodeling, Concrete work, Hardscaping/Pavers, Kitchen/Bath/ and Basements. We are committed to providing quality services from the beginning to the end of your project or scope of work. We look forward to earning your business. We also offer financing options to all customers dealing with 30+ banks and lenders. Book your FREE ESTIMATE today!!!

"Didn’t make good on a project gone bed."

Gale M on February 2024

Here at Bawa Construction Group, we sustain our business on quality and integrity. We are experts in general contracting specializing in all types of remodeling, Concrete work, Hardscaping/Pavers, Kitchen/Bath/ and Basements. We are committed to providing quality services from the beginning to the end of your project or scope of work. We look forward to earning your business. We also offer financing options to all customers dealing with 30+ banks and lenders. Book your FREE ESTIMATE today!!!

"Didn’t make good on a project gone bed."

Gale M on February 2024


Top Gun Kitchen & Cabinets
5.00(
11
)
Approved Pro
Top Gun Kitchen & Cabinets
5.00(
11
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
592 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 Kitchen & Bath Works INC
Kitchen & Bath Works INC
1551 LIincoln Ave
5.00(
101
)
Approved Pro
Kitchen & Bath Works INC
1551 LIincoln Ave
5.00(
101
)
Approved Pro
Customers say: Quick response
Recommended by 99% of Angi customers
Recommended by 99% of HomeAdvisor customers
470 local quotes requested

Kitchen and Bath Works Inc has been owner operated and successfully in business since 1994. Offering a consultative approach and delivering on quality, custom work, our business has been overwhelmingly driven by word of mouth referrals. From start to finish, we stand by our work and our owner is committed to being present on all jobs.

"Lou renovated my kitchen last year and I was completely satisfied. I called him back this summer to gut and remodel my bathroom. He was extremely considerate, and he treated my house as if it were his own. My house is small, and I only have one bathroom. The project took nine days. I was anticipating that there would be a big mess and a huge inconvenience. But even the demo was done very neatly and efficiently. Lou even took the time to re-connect the toilet each night so that I wouldn't be left without. Lou did an amazing job, and it was a pleasure working with him. Once again, I am pleased to recommend Lou for your kitchen or bath project."

Janet M on November 2023

Kitchen and Bath Works Inc has been owner operated and successfully in business since 1994. Offering a consultative approach and delivering on quality, custom work, our business has been overwhelmingly driven by word of mouth referrals. From start to finish, we stand by our work and our owner is committed to being present on all jobs.

"Lou renovated my kitchen last year and I was completely satisfied. I called him back this summer to gut and remodel my bathroom. He was extremely considerate, and he treated my house as if it were his own. My house is small, and I only have one bathroom. The project took nine days. I was anticipating that there would be a big mess and a huge inconvenience. But even the demo was done very neatly and efficiently. Lou even took the time to re-connect the toilet each night so that I wouldn't be left without. Lou did an amazing job, and it was a pleasure working with him. Once again, I am pleased to recommend Lou for your kitchen or bath project."

Janet M on November 2023


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
Super Service Award
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
2039 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 JNM Sewer
JNM Sewer
36 1st Ave
5.00(
28
)
Approved Pro
JNM Sewer
36 1st Ave
5.00(
28
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
122 local quotes requested

Here at JNM Sewer & Drain we know how difficult it can be to experience plumbing problems. We’re a family owned and operated company that wants to take on your challenges efficiently, quickly, and at the lowest cost possible. We won’t tell you we can’t help you over the phone. Instead we’ll discuss, provide estimated costs over the phone, and if we need more information, you can even send a text message with a photo of your issue. We don’t pretend to specialize in various industries. Instead we focus on one thing and do it well: sewer and drain cleaning. We offer solutions for homeowners, plumbers, and small business owners. WHY ELSE SHOULD YOU CONSIDER US? We offer warranties. We’ve got the equipment on-hand to tackle your challenges. We offer maintenance programs (monthly or yearly options available). We’re great communicators so we make sure you understand the issue and how we’re going to solve it before we take it on. We charge on a job basis, not hourly. No hidden fees. AREAS WE SERVE We cater to homes and businesses located in Nassau County, Suffolk County, Queens, Brooklyn, and the Bronx.

"Job was done very well. Fairly priced and conscientious and respectful. I would definitely use him again."

Al S on May 2025

Here at JNM Sewer & Drain we know how difficult it can be to experience plumbing problems. We’re a family owned and operated company that wants to take on your challenges efficiently, quickly, and at the lowest cost possible. We won’t tell you we can’t help you over the phone. Instead we’ll discuss, provide estimated costs over the phone, and if we need more information, you can even send a text message with a photo of your issue. We don’t pretend to specialize in various industries. Instead we focus on one thing and do it well: sewer and drain cleaning. We offer solutions for homeowners, plumbers, and small business owners. WHY ELSE SHOULD YOU CONSIDER US? We offer warranties. We’ve got the equipment on-hand to tackle your challenges. We offer maintenance programs (monthly or yearly options available). We’re great communicators so we make sure you understand the issue and how we’re going to solve it before we take it on. We charge on a job basis, not hourly. No hidden fees. AREAS WE SERVE We cater to homes and businesses located in Nassau County, Suffolk County, Queens, Brooklyn, and the Bronx.

"Job was done very well. Fairly priced and conscientious and respectful. I would definitely use him again."

Al S on May 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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