Get matched with top tankless water heater repair pros in your area
Enter your zip and get matched with up to 3 pros
Matching on HomeAdvisor
Tankless water heater repair pros in Holtsville
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.
1-800-Plumber + Air of Babylon is focused on being the BEST! It's not about being better than everyone else, instead our focus is on providing you with the fast, dependable plumbing and emergency services when you need it most. Our goal is to give you the BEST experience you have ever received from a service based business.
"Had 1800 plumber come out to fix a leaking valve in my basement. Super convenient and friendly! 10/10"
Mike M on April 2025
1-800-Plumber + Air of Babylon is focused on being the BEST! It's not about being better than everyone else, instead our focus is on providing you with the fast, dependable plumbing and emergency services when you need it most. Our goal is to give you the BEST experience you have ever received from a service based business.
"Had 1800 plumber come out to fix a leaking valve in my basement. Super convenient and friendly! 10/10"
Mike M on April 2025
At Drain Away Sewer Service, Inc., we put our customers needs first! We offer a range of drain services and we know that our customer's are the backbone of our success. Response times are quick through our 24-hour emergency service and we pride ourselves on providing competitive, up-front costs. Whether you take advantage of our maintenance and service contracts for savings, or you use us for one-time emergency services, Drain Away Sewer Service, Inc. will deliver on professional, reliable and quality work. Drain Away Sewer Service, Inc. provides both residential and commercial drain cleaning services 24 hours a day, 7 days a week and 365 days per year. Offering over 10 years of experience in the drain cleaning business, our qualified staff is prepared to handle everything from a clogged toilet to main sewer services. We are centrally located to service both Westchester and Fairfield Counties.
"Richard from Drain Away service came out the next day and fixed the clogged drain. He was also very helpful with getting Servpro out to do clean up. Richard provided full and efficient services. Very pleasant and reasonably priced. I would definitely recommend Drain Away for any plumbing issues and would use them again if needed."
Paula A on February 2025
At Drain Away Sewer Service, Inc., we put our customers needs first! We offer a range of drain services and we know that our customer's are the backbone of our success. Response times are quick through our 24-hour emergency service and we pride ourselves on providing competitive, up-front costs. Whether you take advantage of our maintenance and service contracts for savings, or you use us for one-time emergency services, Drain Away Sewer Service, Inc. will deliver on professional, reliable and quality work. Drain Away Sewer Service, Inc. provides both residential and commercial drain cleaning services 24 hours a day, 7 days a week and 365 days per year. Offering over 10 years of experience in the drain cleaning business, our qualified staff is prepared to handle everything from a clogged toilet to main sewer services. We are centrally located to service both Westchester and Fairfield Counties.
"Richard from Drain Away service came out the next day and fixed the clogged drain. He was also very helpful with getting Servpro out to do clean up. Richard provided full and efficient services. Very pleasant and reasonably priced. I would definitely recommend Drain Away for any plumbing issues and would use them again if needed."
Paula A on February 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.
"Great. Justin is great. Reliable and professional. Solve the problem and generous with his knowledge and expertise. Very responsive and punctual. I’ll recommend him to my friends and family."
Patrick C on June 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.
"Great. Justin is great. Reliable and professional. Solve the problem and generous with his knowledge and expertise. Very responsive and punctual. I’ll recommend him to my friends and family."
Patrick C on June 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.
"The initial meeting with John was promising. He was straightforward, easy to talk to, and quickly provided a quote without being pushy. I appreciated that he offered light recommendations without trying to upsell us. After that first meeting, I felt comfortable moving forward. I had John come out one more time so my boyfriend could meet him, ask a few more questions, and finalize the siding and color choices. The next morning, John texted early, saying he’d be by within the hour to pick up the $10,000 deposit. We were told materials would be ordered right away and the project would begin by the end of the month. However, as that date approached, we hadn’t heard anything. When we reached out, we were told it would be delayed by another week — and then again, another week. We were okay with some delays, but the complete lack of communication was extremely frustrating, especially since we needed to coordinate our work schedules. We were also told the work wouldn’t involve anything on the inside, but that turned out not to be true — which was a big issue since we have two pets. During the project, our flower beds and garden were completely destroyed. While some wear and tear is expected, there was no reason for a large boxwood bush to be crushed with a cinder block when there was clearly space to work around it. Several things were damaged, including blinds, window sills, a shelf, and part of the entrance flooring. While I understand that accidents happen during construction, what bothered us most was the lack of accountability. None of these issues were addressed until we specifically called them back out to deal with them. John never showed up for a single walkthrough, and to our surprise, the entire job was done by a different company altogether — not his own crew. That was something we hadn't anticipated, and unfortunately, we didn’t think to confirm it beforehand again our fault. The windows installed were low quality and very off-brand compared to what we expected. We had also discussed having decorative grills/grid lines in the windows, which were completely left out. In the end, while everything listed in the contract was technically delivered, the overall experience left a lot to be desired. The workmanship felt sloppy, communication was almost nonexistent, and the lack of oversight from the owner was disappointing. We definitely feel we overpaid for what we received. It’s partly on us for not being more proactive during the process, but someone who takes pride in their business would have at least done one final inspection or walkthrough."
julianne p on July 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.
"The initial meeting with John was promising. He was straightforward, easy to talk to, and quickly provided a quote without being pushy. I appreciated that he offered light recommendations without trying to upsell us. After that first meeting, I felt comfortable moving forward. I had John come out one more time so my boyfriend could meet him, ask a few more questions, and finalize the siding and color choices. The next morning, John texted early, saying he’d be by within the hour to pick up the $10,000 deposit. We were told materials would be ordered right away and the project would begin by the end of the month. However, as that date approached, we hadn’t heard anything. When we reached out, we were told it would be delayed by another week — and then again, another week. We were okay with some delays, but the complete lack of communication was extremely frustrating, especially since we needed to coordinate our work schedules. We were also told the work wouldn’t involve anything on the inside, but that turned out not to be true — which was a big issue since we have two pets. During the project, our flower beds and garden were completely destroyed. While some wear and tear is expected, there was no reason for a large boxwood bush to be crushed with a cinder block when there was clearly space to work around it. Several things were damaged, including blinds, window sills, a shelf, and part of the entrance flooring. While I understand that accidents happen during construction, what bothered us most was the lack of accountability. None of these issues were addressed until we specifically called them back out to deal with them. John never showed up for a single walkthrough, and to our surprise, the entire job was done by a different company altogether — not his own crew. That was something we hadn't anticipated, and unfortunately, we didn’t think to confirm it beforehand again our fault. The windows installed were low quality and very off-brand compared to what we expected. We had also discussed having decorative grills/grid lines in the windows, which were completely left out. In the end, while everything listed in the contract was technically delivered, the overall experience left a lot to be desired. The workmanship felt sloppy, communication was almost nonexistent, and the lack of oversight from the owner was disappointing. We definitely feel we overpaid for what we received. It’s partly on us for not being more proactive during the process, but someone who takes pride in their business would have at least done one final inspection or walkthrough."
julianne p on July 2025
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
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
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.
"Fast clean and good work"
edward c on June 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.
"Fast clean and good work"
edward c on June 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.
"I am very pleased with my remodel. Dave was professional and his crew were on time, worked every day and took care of my house like it was their own!"
Jennie D on July 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.
"I am very pleased with my remodel. Dave was professional and his crew were on time, worked every day and took care of my house like it was their own!"
Jennie D on July 2025
WELCOME! We are so glad you are here! At SMG Home Services we truly are a Full-Service Licensed & Insured Home Improvement Company. We take pride in transforming homes & spaces with top-quality craftsmanship & exceptional customer service. We specialize in everything from Water damage Restoration to Remodeling, Carpentry, Painting, & all handyman services. SMG Home Services will be there for every phase! Whether you need mold removal, minor repairs or a complete renovation, our experienced team is committed to delivering outstanding results tailored to your vision & budget, Guaranteed!
"They were a great choice! I will use them whenever I have new projects for my house. Gave us a quote which was reasonable. Did the work + on time, and the job came out great. Definitely a great company!"
ERIC F on March 2025
WELCOME! We are so glad you are here! At SMG Home Services we truly are a Full-Service Licensed & Insured Home Improvement Company. We take pride in transforming homes & spaces with top-quality craftsmanship & exceptional customer service. We specialize in everything from Water damage Restoration to Remodeling, Carpentry, Painting, & all handyman services. SMG Home Services will be there for every phase! Whether you need mold removal, minor repairs or a complete renovation, our experienced team is committed to delivering outstanding results tailored to your vision & budget, Guaranteed!
"They were a great choice! I will use them whenever I have new projects for my house. Gave us a quote which was reasonable. Did the work + on time, and the job came out great. Definitely a great company!"
ERIC F on March 2025
FAQs for tankless water heater installation projects in Holtsville, 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.
- Birmingham
- Phoenix
- Tucson
- Fresno
- Long Beach
- Los Angeles
- Modesto
- Sacramento
- San Diego
- San Francisco
- San Jose
- Denver
- Hartford
- Washington DC
- Fort Lauderdale
- Jacksonville
- Miami
- Orlando
- Tampa
- Atlanta
- Chicago
- Indianapolis
- Louisville
- New Orleans
- Baltimore
- Boston
- Detroit
- Grand Rapids
- Minneapolis
- Saint Paul
- Kansas City
- Saint Louis
- Las Vegas
- Albany
- New York
- Asheville
- Charlotte
- Greensboro
- Raleigh
- Winston Salem
- Cincinnati
- Cleveland
- Columbus
- Oklahoma City
- Portland
- Harrisburg
- Philadelphia
- Pittsburgh
- Providence
- Memphis
- Nashville
- Austin
- Dallas
- El Paso
- Fort Worth
- Houston
- San Antonio
- Salt Lake City
- Norfolk
- Richmond
- Virginia Beach
- Seattle
- Madison
- Milwaukee
Get our Angi-powered app
