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 Katy

Avatar for Blue Frog Plumbing & Drain of Northwest Houston
Blue Frog Plumbing & Drain of Northwest Houston
10015 N. Eldridge Pkwy, Ste E-100
4.54(
172
)
Approved Pro
Blue Frog Plumbing & Drain of Northwest Houston
10015 N. Eldridge Pkwy, Ste E-100
4.54(
172
)
Approved Pro
Customers say: True professional
16 years of experience
Free onsite estimate

Blue Frog Plumbing & Drain, is your solution for all your drain and plumbing needs. We take great pride in our honesty, extreme professionalism, timeliness, and superior customer service, on every job, large or small. Blue Frog Plumbing & Drain, will deliver a lasting impression. Developing a relationship with you and your home, so that the next time service is needed, there will be no question regarding who to call. Satisfaction guaranteed. Give us a call today. Our friendly office staff are ready to listen to your needs and help you through our easy financing process if needed so you can save your cash and get what you've always wanted! Blue Frog Plumbing & Drain, service experts are happy to help you with your plumbing project and make sure you understand all the options that are available to you. All services are evaluated on site, at service location, so that you may be completely informed and educated concerning your plumbing needs. We are waiting for your call!

"Great service."

Vanisha S on January 2025

Blue Frog Plumbing & Drain, is your solution for all your drain and plumbing needs. We take great pride in our honesty, extreme professionalism, timeliness, and superior customer service, on every job, large or small. Blue Frog Plumbing & Drain, will deliver a lasting impression. Developing a relationship with you and your home, so that the next time service is needed, there will be no question regarding who to call. Satisfaction guaranteed. Give us a call today. Our friendly office staff are ready to listen to your needs and help you through our easy financing process if needed so you can save your cash and get what you've always wanted! Blue Frog Plumbing & Drain, service experts are happy to help you with your plumbing project and make sure you understand all the options that are available to you. All services are evaluated on site, at service location, so that you may be completely informed and educated concerning your plumbing needs. We are waiting for your call!

"Great service."

Vanisha S on January 2025


Avatar for All the Time Plumbing
All the Time Plumbing
13100 Wortham Center Drive, 3rd Floor
4.94(
85
)
Approved Pro
All the Time Plumbing
13100 Wortham Center Drive, 3rd Floor
4.94(
85
)
Approved Pro
Customers say: Quality work
8 years of experience
Free onsite estimate

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!

"Isaac, was a very amiable and professional Plumber. He was very thorough and honest. We will definitely use," All the Time Plumbing" for any and all of our plumbing needs."

David S on September 2022

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!

"Isaac, was a very amiable and professional Plumber. He was very thorough and honest. We will definitely use," All the Time Plumbing" for any and all of our plumbing needs."

David S on September 2022


Avatar for Affinity Hot Water Technology, Inc.
Affinity Hot Water Technology, Inc.
14831 W Lime Blossom Ct
4.72(
244
)
Approved Pro
Affinity Hot Water Technology, Inc.
14831 W Lime Blossom Ct
4.72(
244
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
28 local quotes requested

Affinity Hot Water Technology exists to serve our clients hot water needs. We provide the highest level of competence, customer service and value when it comes to providing you with hot water. While we service and repair all brands of tankless water heaters, We proudly provide and install Rinnai tankless water heaters with an unmatched warranty. Not only do our clients receive the typical 15 year heat exchanger/5 year parts and labor warranty from Rinnai. We provide a labor warranty that matches the Rinnai heat exchanger and parts warranty giving you an unprecedented 15 year warranty for parts and labor. Call, email or text today so we can show you first hand why we are absolutely your best bet for a new tankless water heater as well as to repair or service your existing tankless water heater.

"Expert, professional service and great value. "

Willem K on June 2025

Affinity Hot Water Technology exists to serve our clients hot water needs. We provide the highest level of competence, customer service and value when it comes to providing you with hot water. While we service and repair all brands of tankless water heaters, We proudly provide and install Rinnai tankless water heaters with an unmatched warranty. Not only do our clients receive the typical 15 year heat exchanger/5 year parts and labor warranty from Rinnai. We provide a labor warranty that matches the Rinnai heat exchanger and parts warranty giving you an unprecedented 15 year warranty for parts and labor. Call, email or text today so we can show you first hand why we are absolutely your best bet for a new tankless water heater as well as to repair or service your existing tankless water heater.

"Expert, professional service and great value. "

Willem K on June 2025


Avatar for Power Plumbing Services
Power Plumbing Services
8717 Humble Westfield Rd, Bldg C
4.59(
388
)
Approved Pro
Power Plumbing Services
8717 Humble Westfield Rd, Bldg C
4.59(
388
)
Approved Pro
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
152 local quotes requested

Power Plumbing Services is not happy unless you are happy! We strive to be professional, reliable, and honest. We look forward to bringing our quality of work and excellence to your homes. Your satisfaction is our guarantee. Call us today, or book an appointment directly on our calendar!

"PR Documentation SF May 2nd, plumber Kody arrived around 14:30, and there was a noticeable odor of alcohol about him upon arrival. As a former Federal Law Enforcement Officer with 13 years of experience, I immediately recognized this. Kody arrived approximately one hour late for the scheduled time, explaining he had forgotten some necessary parts and had to leave to go to Home Depot to retrieve them. He eventually returned and completed all the plumbing work around 16:30, then informed me he was finished. Upon inspecting the completed work, it appeared to be done correctly. I then inquired about a reduction in the labor cost, as Kody was physically present and working for less than two hours in total. I was informed that I was still expected to pay the full quoted amount, as the estimate was now considered a flat rate. I was never informed that the estimate was a flat rate at the time I signed it. I offered to pay a fair amount for the actual time worked (2 hours of labor) plus the cost of the parts. Kody stated that his boss instructed him to leave the premises, and he subsequently did so. For your information, a quick internet search indicates that the average hourly labor fee for a plumber in this area typically ranges from $75 to $150 per hour. Additionally, in the state of Texas, Texas Penal Code 32.53 classifies the exploitation of a child, elderly individual, or disabled individual for monetary or personal gain as a third-degree felony. I am a service-connected disabled veteran and currently serve as the primary caregiver for my 94 year old mother, who resides with me in my home."

Duncan C on May 2025

Power Plumbing Services is not happy unless you are happy! We strive to be professional, reliable, and honest. We look forward to bringing our quality of work and excellence to your homes. Your satisfaction is our guarantee. Call us today, or book an appointment directly on our calendar!

"PR Documentation SF May 2nd, plumber Kody arrived around 14:30, and there was a noticeable odor of alcohol about him upon arrival. As a former Federal Law Enforcement Officer with 13 years of experience, I immediately recognized this. Kody arrived approximately one hour late for the scheduled time, explaining he had forgotten some necessary parts and had to leave to go to Home Depot to retrieve them. He eventually returned and completed all the plumbing work around 16:30, then informed me he was finished. Upon inspecting the completed work, it appeared to be done correctly. I then inquired about a reduction in the labor cost, as Kody was physically present and working for less than two hours in total. I was informed that I was still expected to pay the full quoted amount, as the estimate was now considered a flat rate. I was never informed that the estimate was a flat rate at the time I signed it. I offered to pay a fair amount for the actual time worked (2 hours of labor) plus the cost of the parts. Kody stated that his boss instructed him to leave the premises, and he subsequently did so. For your information, a quick internet search indicates that the average hourly labor fee for a plumber in this area typically ranges from $75 to $150 per hour. Additionally, in the state of Texas, Texas Penal Code 32.53 classifies the exploitation of a child, elderly individual, or disabled individual for monetary or personal gain as a third-degree felony. I am a service-connected disabled veteran and currently serve as the primary caregiver for my 94 year old mother, who resides with me in my home."

Duncan C on May 2025


Avatar for Show Plumbing
Show Plumbing
16717 Grant Rd.
4.81(
805
)
Approved Pro
Show Plumbing
16717 Grant Rd.
4.81(
805
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
95 local quotes requested

With over 25 years experience in the plumbing industry, Show Plumbing is your #1 choice. Family owned and operated in the Cypress area. We are licensed and insured and look forward to serving you and your family. We provide general plumbing services, water heater repair/installation, tankless repair/installation, water purification and analysis, water softeners / conditioners, drain cleaning, sewer cleaning and repairs, as well as, free camera inspection. No job is too small or too big for Show Plumbing. Call us today for a free estimate!

"Fast efficient work once he got here"

Nicole M on June 2025

With over 25 years experience in the plumbing industry, Show Plumbing is your #1 choice. Family owned and operated in the Cypress area. We are licensed and insured and look forward to serving you and your family. We provide general plumbing services, water heater repair/installation, tankless repair/installation, water purification and analysis, water softeners / conditioners, drain cleaning, sewer cleaning and repairs, as well as, free camera inspection. No job is too small or too big for Show Plumbing. Call us today for a free estimate!

"Fast efficient work once he got here"

Nicole M on June 2025


Avatar for 1-800-Plumber of Cypress
1-800-Plumber of Cypress
17109 S. Drive Unit 1
4.21(
7
)
Approved Pro
1-800-Plumber of Cypress
17109 S. Drive Unit 1
4.21(
7
)
Approved Pro
Customers say: True professional
115 local quotes requested
2 years of experience

1-800-Plumber of Cypress 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. We provide the follow discounts on services: -$300 off Water Treatment System. -$100 off any new Water Heater. -$50 off any repairs. Our team of licensed, insured and experienced plumbers are dedicated to delivering exceptional service, quality workmanship, and exceptional customer care. In a way to keep our customers serviced we have a yearly maintenance plan in place that cover both the Plumbing and HVAC side of the business. It covers the following: -Routine Plumbing and HVAC inspections -Water Heater Flushes. -Hard Water Tests. -Priority Service -Discounts. Hire us for all your plumbing needs and we promise to always give you our BEST service.

"Was at my house within 30min of calling! Professional service and fixed issue."

Steven P on May 2025

1-800-Plumber of Cypress 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. We provide the follow discounts on services: -$300 off Water Treatment System. -$100 off any new Water Heater. -$50 off any repairs. Our team of licensed, insured and experienced plumbers are dedicated to delivering exceptional service, quality workmanship, and exceptional customer care. In a way to keep our customers serviced we have a yearly maintenance plan in place that cover both the Plumbing and HVAC side of the business. It covers the following: -Routine Plumbing and HVAC inspections -Water Heater Flushes. -Hard Water Tests. -Priority Service -Discounts. Hire us for all your plumbing needs and we promise to always give you our BEST service.

"Was at my house within 30min of calling! Professional service and fixed issue."

Steven P on May 2025


Avatar for Nick's Plumbing & Sewer Service, Inc.
Nick's Plumbing & Sewer Service, Inc.
1420 North Durham Drive
4.75(
409
)
Approved Pro
Nick's Plumbing & Sewer Service, Inc.
1420 North Durham Drive
4.75(
409
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
80 local quotes requested

For a RELIABLE LOCAL FAMILY OWNED plumbing company in Houston, you can't go wrong with Nick's Plumbing & Sewer Services, Inc. We have provided superior plumbing and air conditioning services to the Greater Houston area since 1979! Please call us with your next plumbing or air conditioning service request!

"Quick, friendly, efficient. Good job!"

Richard M on September 2024

For a RELIABLE LOCAL FAMILY OWNED plumbing company in Houston, you can't go wrong with Nick's Plumbing & Sewer Services, Inc. We have provided superior plumbing and air conditioning services to the Greater Houston area since 1979! Please call us with your next plumbing or air conditioning service request!

"Quick, friendly, efficient. Good job!"

Richard M on September 2024


Avatar for BPC, LP
BPC, LP
17619 South Drive
4.63(
180
)
Approved Pro
BPC, LP
17619 South Drive
4.63(
180
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
24 years of experience

BPC, LP, has been in business since 2001! We specialize in all of your plumbing needs and we guarantee you a job well done! From commercial to residential, we are your guys! We strive to exceed the homeowners expectations each and every time and we get the job done, the way you want it. Call us to schedule an appointment!

"Jose did a very good job installing a water line for the fridge"

Jill O on March 2022

BPC, LP, has been in business since 2001! We specialize in all of your plumbing needs and we guarantee you a job well done! From commercial to residential, we are your guys! We strive to exceed the homeowners expectations each and every time and we get the job done, the way you want it. Call us to schedule an appointment!

"Jose did a very good job installing a water line for the fridge"

Jill O on March 2022


Avatar for Redfin Plumbing Co.
Redfin Plumbing Co.
7238B Wynnwood Lane
4.89(
38
)
Approved Pro
Redfin Plumbing Co.
7238B Wynnwood Lane
4.89(
38
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 local quotes requested

We at Redfin Plumbing Co, 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!

"We had them put to check out a gas leak. The technician was very knowledgeable and friendly. He went above and beyond."

Joey K on April 2024

We at Redfin Plumbing Co, 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!

"We had them put to check out a gas leak. The technician was very knowledgeable and friendly. He went above and beyond."

Joey K on April 2024


Avatar for NEW GEN PLUMBING LLC
NEW GEN PLUMBING LLC
17218 Lilac Vale Ct
5.00(
4
)
Approved Pro
NEW GEN PLUMBING LLC
17218 Lilac Vale Ct
5.00(
4
)
Approved Pro
Customers say: Quick response
50 local quotes requested
1 years of experience

Thank you for visiting NEW GEN PLUMBING LLC. We are your locally owned and operated plumbing specialists based in Houston, TX. We service residential and commercial clients throughout Houston and the surrounding areas. Contact us now for your free estimate--we look forward to working with you soon!

"Amazing"

Brice R on March 2025

Thank you for visiting NEW GEN PLUMBING LLC. We are your locally owned and operated plumbing specialists based in Houston, TX. We service residential and commercial clients throughout Houston and the surrounding areas. Contact us now for your free estimate--we look forward to working with you soon!

"Amazing"

Brice R on March 2025

...
Showing 1-10 of 940

FAQs for tankless water heater installation projects in Katy, TX

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.