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 Denver

Avatar for Mr. Rooter Plumbing of Charlotte
Mr. Rooter Plumbing of Charlotte
9305-G Monroe Rd.
4.75(
71
)
Approved Pro
Mr. Rooter Plumbing of Charlotte
9305-G Monroe Rd.
4.75(
71
)
Approved Pro
Customers say: Super punctual
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
364 local quotes requested

We pride our company, on reliability, great communication, integrity and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business.

"Prompt, friendly, honest, fair, and preformed quality workmanship!"

BRUCE C on May 2025

We pride our company, on reliability, great communication, integrity and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business.

"Prompt, friendly, honest, fair, and preformed quality workmanship!"

BRUCE C on May 2025


Avatar for Superior Plumbing & Drains, LLC
Superior Plumbing & Drains, LLC
116 West 3rd Avenue
4.66(
34
)
Approved Pro
Superior Plumbing & Drains, LLC
116 West 3rd Avenue
4.66(
34
)
Approved Pro
Customers say: True professional
119 local quotes requested
5 years of experience

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

"Comorey was fantastic. Even came back after issue with first disposal not working. Friendly and polite and prompt"

Thomas V on May 2025

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

"Comorey was fantastic. Even came back after issue with first disposal not working. Friendly and polite and prompt"

Thomas V on May 2025


Avatar for 100 Percent Plumbing Of North Carolina LLC
100 Percent Plumbing Of North Carolina LLC
5540 Centerview Dr Ste 204 Pmb 700085
New on HomeAdvisorNew on Angi
Approved Pro
100 Percent Plumbing Of North Carolina LLC
5540 Centerview Dr Ste 204 Pmb 700085
New on AngiNew on HomeAdvisor
Approved Pro
8 years of experience
Free onsite estimate

100% Plumbing is the #1 trusted plumbing company in North Carolina. We deliver top-notch services to North Carolina metropolitan residents. Our expert plumbers offer Free onsite estimates low cost solutions, timely services, and a 100% satisfaction guarantee. With transparent pricing and a courteous staff, we guarantee your plumbing needs are met with excellence. Contact us today for reliable plumbing expertise. We service: Charlotte, SouthPark, Myers Park, Ballantyne, Waxhaw, Weddington, Marvin, Providence Plantation, Dilworth, Cornelius, Davidson, Mooresville, Fort Mill, Tega Cay

100% Plumbing is the #1 trusted plumbing company in North Carolina. We deliver top-notch services to North Carolina metropolitan residents. Our expert plumbers offer Free onsite estimates low cost solutions, timely services, and a 100% satisfaction guarantee. With transparent pricing and a courteous staff, we guarantee your plumbing needs are met with excellence. Contact us today for reliable plumbing expertise. We service: Charlotte, SouthPark, Myers Park, Ballantyne, Waxhaw, Weddington, Marvin, Providence Plantation, Dilworth, Cornelius, Davidson, Mooresville, Fort Mill, Tega Cay


Avatar for Ace Hardware Home Services
Ace Hardware Home Services
1204 1st St W
5.00(
2
)
Approved Pro
Ace Hardware Home Services
1204 1st St W
5.00(
2
)
Approved Pro
Customers say: Quick response
65 local quotes requested
35 years of experience

Ace Hardware Home Services specializes in installation, repair, and maintenance services for residential and commercial customers. We offer service for heating, air conditioning, and plumbing systems, as well as indoor air quality solutions including whole house humidifiers and air purification systems. Craig Canella founded Canella Heating and Air in 1990, and now, with the acquisition of Rye Heating and Air and Minyard Plumbing, the teams have combined under the Ace Hardware Home Services banner. Today, Craig and his team uphold the reputation for outstanding customer care, offering enhanced service for customers in the Hickory and Catawba Valley regions, Lincolnton, and the Lake Norman Area of North Carolina.

"They were very professional and answered all my questions."

Ann W on August 2024

Ace Hardware Home Services specializes in installation, repair, and maintenance services for residential and commercial customers. We offer service for heating, air conditioning, and plumbing systems, as well as indoor air quality solutions including whole house humidifiers and air purification systems. Craig Canella founded Canella Heating and Air in 1990, and now, with the acquisition of Rye Heating and Air and Minyard Plumbing, the teams have combined under the Ace Hardware Home Services banner. Today, Craig and his team uphold the reputation for outstanding customer care, offering enhanced service for customers in the Hickory and Catawba Valley regions, Lincolnton, and the Lake Norman Area of North Carolina.

"They were very professional and answered all my questions."

Ann W on August 2024


Avatar for Pro Plumbing Heating & Air
Pro Plumbing Heating & Air
446 Teebo Drive
4.46(
1,062
)
Approved Pro
Pro Plumbing Heating & Air
446 Teebo Drive
4.46(
1,062
)
Approved Pro
Customers say: Quick response
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
46 local quotes requested

Pro Plumbing Heating & Air is a friendly, full-service, residential plumbing company focused on providing customer satisfaction and punctual, courteous service. For your convenience, we arrive at your home with our "mobile warehouse on wheels." This Pro Plumbing Heating & Air, fleet of super trucks is stocked with a full line of quality parts and products to keep your project moving quickly and on schedule. Our customers also appreciate our flat rate pricing that allows them to know the price upfront, so there are no surprises. To keep your home neat and clean, our Pro Plumbing Heating & Air employees place runners on the floors and wear protective booties.

"Very experience did not follow instruction or do quality work"

David F on October 2024

Pro Plumbing Heating & Air is a friendly, full-service, residential plumbing company focused on providing customer satisfaction and punctual, courteous service. For your convenience, we arrive at your home with our "mobile warehouse on wheels." This Pro Plumbing Heating & Air, fleet of super trucks is stocked with a full line of quality parts and products to keep your project moving quickly and on schedule. Our customers also appreciate our flat rate pricing that allows them to know the price upfront, so there are no surprises. To keep your home neat and clean, our Pro Plumbing Heating & Air employees place runners on the floors and wear protective booties.

"Very experience did not follow instruction or do quality work"

David F on October 2024


Avatar for Horizon Services LLC
Horizon Services LLC
269 Executive Park Dr NE
4.75(
10
)
Approved Pro
Horizon Services LLC
269 Executive Park Dr NE
4.75(
10
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
38 years of experience

After a quarter of a century in business, Horizons Services, LLC, remains fully committed to setting the industry standard for customer service, installation, and focusing on things that are important to busy homeowners: respect for their time, their home and their property; up-front pricing, and an unconditional 100% money back guarantee.

"A"

Michael G on September 2023

After a quarter of a century in business, Horizons Services, LLC, remains fully committed to setting the industry standard for customer service, installation, and focusing on things that are important to busy homeowners: respect for their time, their home and their property; up-front pricing, and an unconditional 100% money back guarantee.

"A"

Michael G on September 2023


Dryer Doctor
Based In
4.57(
42
)
Approved Pro
Dryer Doctor
Based In
4.57(
42
)
Approved Pro
Customers say: True professional
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
366 local quotes requested

We have the experience and dedication to get the job done right! Specializing in appliance repair services; 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! Kenneth called immediately after our request was submitted. He came to our home within 6 hours of the conversation, diagnosed the problem, and left to purchase the part. 48 hours after first contact, our dishwasher has been repaired. Additionally, Kenneth is kind, professional, and someone we trust."

Kheresa H on February 2024

We have the experience and dedication to get the job done right! Specializing in appliance repair services; 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! Kenneth called immediately after our request was submitted. He came to our home within 6 hours of the conversation, diagnosed the problem, and left to purchase the part. 48 hours after first contact, our dishwasher has been repaired. Additionally, Kenneth is kind, professional, and someone we trust."

Kheresa H on February 2024


Avatar for Superior Plumbing and Drains
Superior Plumbing and Drains
1669 Federal Avenue
5.00(
10
)
Approved Pro
Superior Plumbing and Drains
1669 Federal Avenue
5.00(
10
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
975 local quotes requested

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.

"Arrived quickly. The young man was professional and polite. He got the job done surprisingly fast and made sure to explain what he did and why. The cost was clear and very fair before the work started and payment was easy."

Mary T on August 2024

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.

"Arrived quickly. The young man was professional and polite. He got the job done surprisingly fast and made sure to explain what he did and why. The cost was clear and very fair before the work started and payment was easy."

Mary T on August 2024


Avatar for Medlin's Plumbing
Medlin's Plumbing
3333 IREDELL HGTS RD
4.78(
45
)
Approved Pro
Medlin's Plumbing
3333 IREDELL HGTS RD
4.78(
45
)
Approved Pro
Customers say: Super punctual
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
216 local quotes requested

Thank you for looking at my profile. I do not do tankless. I am a expert in replacing water heaters. I have over 40 years of plumbing experience. Please Google Medlins plumbing out of Iron station NC. Look under HomeAdvisor and you will see a extended reviews of my business. I'm the lowest price in (Charlotte, Huntersville, Cornelius Gastonia) on water heater replacement. Thank you 704-678-7703 . To see my reviews on HomeAdvisor please copy and paste HomeAdvisor down below. https://www.homeadvisor.com/rated.medlinsplumbing.6061150.html

"David Medlin, of Medlin's Plumbing, did an extraordinary job in replacing my water heater. He is honest, fair, and thorough. I cannot recommend him highly enough! He is excellent and a true professional!"

Bert T on April 2025

Thank you for looking at my profile. I do not do tankless. I am a expert in replacing water heaters. I have over 40 years of plumbing experience. Please Google Medlins plumbing out of Iron station NC. Look under HomeAdvisor and you will see a extended reviews of my business. I'm the lowest price in (Charlotte, Huntersville, Cornelius Gastonia) on water heater replacement. Thank you 704-678-7703 . To see my reviews on HomeAdvisor please copy and paste HomeAdvisor down below. https://www.homeadvisor.com/rated.medlinsplumbing.6061150.html

"David Medlin, of Medlin's Plumbing, did an extraordinary job in replacing my water heater. He is honest, fair, and thorough. I cannot recommend him highly enough! He is excellent and a true professional!"

Bert T on April 2025


Avatar for MyNewFloor.com
MyNewFloor.com
1820 Westinghouse Blvd Ste L
4.42(
334
)
Approved Pro
MyNewFloor.com
1820 Westinghouse Blvd Ste L
4.42(
334
)
Approved Pro
Customers say: Terrific value
1322 local quotes requested
20 years of experience

A premier flooring company in the Carolinas, MyNewFloor.com was founded by a talented, design savvy professional with 15 years of experience in designing and installing a variety of flooring products. Our company is built on the principles of honesty, quality, craftsmanship, and a sincere effort to provide 100% customer satisfaction! You can be sure that only our professional, knowledgeable and experienced installers will complete all the work for you. We do not sub-contract any of our projects.

"LVP looks great and tile in the kitchen look great but the trim and baseboards were not finished and I had to have another contractor come in and install them. The stairwell was sanded and stained and I was told they could match the stain for the stairs to the LVP and that wasn’t true either. The stairs came out pink. Now I’m having another contractor come in and fix. I would not recommend to a friend."

Diana V on January 2025

A premier flooring company in the Carolinas, MyNewFloor.com was founded by a talented, design savvy professional with 15 years of experience in designing and installing a variety of flooring products. Our company is built on the principles of honesty, quality, craftsmanship, and a sincere effort to provide 100% customer satisfaction! You can be sure that only our professional, knowledgeable and experienced installers will complete all the work for you. We do not sub-contract any of our projects.

"LVP looks great and tile in the kitchen look great but the trim and baseboards were not finished and I had to have another contractor come in and install them. The stairwell was sanded and stained and I was told they could match the stain for the stairs to the LVP and that wasn’t true either. The stairs came out pink. Now I’m having another contractor come in and fix. I would not recommend to a friend."

Diana V on January 2025

...
Showing 1-10 of 966

FAQs for tankless water heater installation projects in Denver, NC

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.