Top-rated tankless water heater repair pros.

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

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Tankless water heater repair pros in Morristown

Avatar for Imperial Plumbing and Drain Cleaning LLC
Imperial Plumbing and Drain Cleaning LLC
4118 Fulton Rd
4.88(
12
)
Approved Pro
Imperial Plumbing and Drain Cleaning LLC
4118 Fulton Rd
4.88(
12
)
Approved Pro
Customers say: Super punctual
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
14 local quotes requested

With several years of 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 and thank you for your interest.

"excellent service for the task"

Rosa T on March 2024

With several years of 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 and thank you for your interest.

"excellent service for the task"

Rosa T on March 2024


Avatar for The Plumbing Authority, Inc.
The Plumbing Authority, Inc.
1209 Buchanan Ave
4.67(
201
)
Approved Pro
The Plumbing Authority, Inc.
1209 Buchanan Ave
4.67(
201
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
36 local quotes requested

At The Plumbing Authority, we know that you want to be able to relax and not deal with plumbing problems. Undependable plumbing causes you stress and frustration. You deserve to enjoy your home without worrying about your plumbing. This is why we send licensed plumbers out to your home, so that you can relax knowing your problem is in good hands. We do not just care about plumbing. We care about you and your home. We have helped thousands of homeowners solve their plumbing problems for over 29 years. Do not let unexpected plumbing issues ruin your day. Instead, find relief when you call us or schedule online.

"Great work, fast & cleaned up after. Ray & Josh were extremely knowledgeable and explained everything to me. Would definitely hire again."

Susan H on May 2025

At The Plumbing Authority, we know that you want to be able to relax and not deal with plumbing problems. Undependable plumbing causes you stress and frustration. You deserve to enjoy your home without worrying about your plumbing. This is why we send licensed plumbers out to your home, so that you can relax knowing your problem is in good hands. We do not just care about plumbing. We care about you and your home. We have helped thousands of homeowners solve their plumbing problems for over 29 years. Do not let unexpected plumbing issues ruin your day. Instead, find relief when you call us or schedule online.

"Great work, fast & cleaned up after. Ray & Josh were extremely knowledgeable and explained everything to me. Would definitely hire again."

Susan H on May 2025


Avatar for ALC Masonry Construction
ALC Masonry Construction
5.00(
6
)
Approved Pro
ALC Masonry Construction
5.00(
6
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1073 local quotes requested

Do you need help with new construction or want to add on a project or even to repair your precious home? LOOK NO FURTHER!!! We can take care of all your remodeling, masonry projects/repairs, roofing, drywall, paint and framing needs. Let us make your dream become reality. We've been in business for 17 years Insured and License

"Great Company, really nice work they sure know what they are doing, call them for your roofing needs"

Cesar M on February 2025

Do you need help with new construction or want to add on a project or even to repair your precious home? LOOK NO FURTHER!!! We can take care of all your remodeling, masonry projects/repairs, roofing, drywall, paint and framing needs. Let us make your dream become reality. We've been in business for 17 years Insured and License

"Great Company, really nice work they sure know what they are doing, call them for your roofing needs"

Cesar M on February 2025


Avatar for Blue Hickory Services LLC
Blue Hickory Services LLC
1576 Old Chisholm Trail
New on HomeAdvisorNew on Angi
Approved Pro
Blue Hickory Services LLC
1576 Old Chisholm Trail
New on AngiNew on HomeAdvisor
Approved Pro
334 local quotes requested
2 years of experience

Transform your home with Blue Hickory Services LLC . Our expert team specializes in remodeling projects, bringing your vision to life. With our attention to detail and commitment to quality, we'll create a space that exceeds your expectations. Contact us today to start your home transformation journey.

Transform your home with Blue Hickory Services LLC . Our expert team specializes in remodeling projects, bringing your vision to life. With our attention to detail and commitment to quality, we'll create a space that exceeds your expectations. Contact us today to start your home transformation journey.


Avatar for Robin’s Pro Remodeling LLC
Robin’s Pro Remodeling LLC
Based In
5.00(
9
)
Approved Pro
Robin’s Pro Remodeling LLC
Based In
5.00(
9
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
704 local quotes requested

We are a company that offers different services such as painting with more then 7 years of experience , remodeling and much more. We are responsible and offer quality services and guaranteed customer satisfaction.

"Last year in 2024 I hard them to come and remodel my kitchen and flooring. I am disabled and I have a hover around which I can take outside. However when the weather got warm I was going to take my hub around out into the yard but the door frame was too small from what it used to be. I called and asked if they could come and modify the door frame and they were quick to respond and modified my door frame from the kitchen out to the porch. Now I can take my hub around outside and enjoy working in my flowers. I highly highly recommend Robin's remodeling. They are a fantastic crew and deserve nothing but the best. Thank you ever so much Mary Knight"

Mary E K on May 2025

We are a company that offers different services such as painting with more then 7 years of experience , remodeling and much more. We are responsible and offer quality services and guaranteed customer satisfaction.

"Last year in 2024 I hard them to come and remodel my kitchen and flooring. I am disabled and I have a hover around which I can take outside. However when the weather got warm I was going to take my hub around out into the yard but the door frame was too small from what it used to be. I called and asked if they could come and modify the door frame and they were quick to respond and modified my door frame from the kitchen out to the porch. Now I can take my hub around outside and enjoy working in my flowers. I highly highly recommend Robin's remodeling. They are a fantastic crew and deserve nothing but the best. Thank you ever so much Mary Knight"

Mary E K on May 2025


Avatar for Above and Beyond Bathplanet of Tri Cities
Above and Beyond Bathplanet of Tri Cities
1330 East Main Street
5.00(
38
)
Approved Pro
Above and Beyond Bathplanet of Tri Cities
1330 East Main Street
5.00(
38
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
316 local quotes requested

We Specialize in Kitchen & Bathroom remodels. We can change your bathtub to a custom shower of your dreams. New high tech polymer showers and tubs can be installed in as little as 1-2 days. We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today!

"Excellent. Dennis and his crew were professional and did not take long to start and complete the job. The four doors were professionally installed and have made my home a safer and more valuable asset. The doors are now plumb and seal to prevent energy loss in summer and winter months. Would definitely hire again."

Clay S on June 2020

We Specialize in Kitchen & Bathroom remodels. We can change your bathtub to a custom shower of your dreams. New high tech polymer showers and tubs can be installed in as little as 1-2 days. We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today!

"Excellent. Dennis and his crew were professional and did not take long to start and complete the job. The four doors were professionally installed and have made my home a safer and more valuable asset. The doors are now plumb and seal to prevent energy loss in summer and winter months. Would definitely hire again."

Clay S on June 2020


Avatar for S & M Customs
S & M Customs
5885 Sycamore Manor Cv
4.49(
137
)
Approved Pro
S & M Customs
5885 Sycamore Manor Cv
4.49(
137
)
Approved Pro
Customers say: Quality work
754 local quotes requested
15 years of experience

We are a complete home repair and remodeling company as well as a handyman service. We install windows and doors, paint interior and exterior, remodel full bathrooms, repair rotten wood and termite damage repair, install ceramic tile and laminate flooring. We are insured, licensed, offer great discounts and give free estimates within 100 miles. We are a family based company so our customers are our priority!

"More than we expected. Did the work to a standard you don’t expect these days."

Nat A on March 2025

We are a complete home repair and remodeling company as well as a handyman service. We install windows and doors, paint interior and exterior, remodel full bathrooms, repair rotten wood and termite damage repair, install ceramic tile and laminate flooring. We are insured, licensed, offer great discounts and give free estimates within 100 miles. We are a family based company so our customers are our priority!

"More than we expected. Did the work to a standard you don’t expect these days."

Nat A on March 2025


Avatar for Neli Virtual Appliance Repair
Neli Virtual Appliance Repair
143 Charlotte Ave
4.29(
573
)
Approved Pro
Neli Virtual Appliance Repair
143 Charlotte Ave
4.29(
573
)
Approved Pro
Customers say: Super punctual
54463 local quotes requested
9 years of experience

Virtually diagnose and/or repair your appliances and HVAC units today without anyone stepping foot inside your home! Starting at $45 you can take control of your home appliance repairs via video chat with a certified technician when it’s convenient for you. Make an appointment today on our website. Neli's certified technicians will work with you to conduct either a diagnosis to find out what's wrong or a repair. You will use Neli’s advanced video chat technology during your appointment. Schedule your appointment today at nelihome.com or call us at 833-876-0900!

"They did fine"

Keavon R on May 2025

Virtually diagnose and/or repair your appliances and HVAC units today without anyone stepping foot inside your home! Starting at $45 you can take control of your home appliance repairs via video chat with a certified technician when it’s convenient for you. Make an appointment today on our website. Neli's certified technicians will work with you to conduct either a diagnosis to find out what's wrong or a repair. You will use Neli’s advanced video chat technology during your appointment. Schedule your appointment today at nelihome.com or call us at 833-876-0900!

"They did fine"

Keavon R on May 2025


Scott Kinsler Construction LLC
1505 Majesty Dr
4.57(
7
)
Scott Kinsler Construction LLC
1505 Majesty Dr
4.57(
7
)
Customers say: Quality work
21 years of experience

I am a licensed contractor; specializing in residential and commercial construction. If you can dream it; I can build it.

I am a licensed contractor; specializing in residential and commercial construction. If you can dream it; I can build it.


Mr. Appliance of Knoxville
200 Prosperity Drive
2.47(
19
)
Mr. Appliance of Knoxville
200 Prosperity Drive
2.47(
19
)
18 years of experience

Mr. Appliance specializes in appliance repair and maintenance to keep your appliances in peak working condition. But repairing your appliances is only part of the job. Our goal is to deliver superior service by taking extra steps to protect your home and become your preferred appliance repair expert. Calling Mr. Appliance ensures: * Prompt, efficient attention * Our ""leave no trace"" clean-up commitment * A solid quote before the service begins - no surprises * Courteous and skilled in-home service professionals * Never an over-time charge - we charge by the job, not by the hour * All work & parts guaranteed Mr. Appliance is locally owned and operated and is part of the largest and fastest growing full service appliance repair company in the world. When your appliances are in need of repair, contact the appliance repair experts at Mr. Appliance.

"We called Mr Appliance in June to help with a smell in our dishwasher. At that time the tech told us he found what he thought was the source and remedied it. He also informed us that if the smell comes back within a year it would be covered under warranty. Fast forward 3 months later, the smell is back. When we called to ask about a followup visit they proceeded to say it was not covered under warranty and charged us another $140 to come out for diagnostics... okay, cheaper than a new dishwasher, please come out. On scene the new tech tells us he cannot find anything wrong. Proceeds to tell my wife to clean it more often then charges us another $50 for customer consult. $190 later we're in the same spot + a HUGE scratch on our hardwood floors. Would not recommend. I am in the process of following up for refund of the $50. 😡"

Brendan P on September 2024

Mr. Appliance specializes in appliance repair and maintenance to keep your appliances in peak working condition. But repairing your appliances is only part of the job. Our goal is to deliver superior service by taking extra steps to protect your home and become your preferred appliance repair expert. Calling Mr. Appliance ensures: * Prompt, efficient attention * Our ""leave no trace"" clean-up commitment * A solid quote before the service begins - no surprises * Courteous and skilled in-home service professionals * Never an over-time charge - we charge by the job, not by the hour * All work & parts guaranteed Mr. Appliance is locally owned and operated and is part of the largest and fastest growing full service appliance repair company in the world. When your appliances are in need of repair, contact the appliance repair experts at Mr. Appliance.

"We called Mr Appliance in June to help with a smell in our dishwasher. At that time the tech told us he found what he thought was the source and remedied it. He also informed us that if the smell comes back within a year it would be covered under warranty. Fast forward 3 months later, the smell is back. When we called to ask about a followup visit they proceeded to say it was not covered under warranty and charged us another $140 to come out for diagnostics... okay, cheaper than a new dishwasher, please come out. On scene the new tech tells us he cannot find anything wrong. Proceeds to tell my wife to clean it more often then charges us another $50 for customer consult. $190 later we're in the same spot + a HUGE scratch on our hardwood floors. Would not recommend. I am in the process of following up for refund of the $50. 😡"

Brendan P on September 2024

...
Showing 1-10 of 283

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.

Share project details to get started.