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 Rio Vista

Pedro Galvan Plumbing, Inc.
5405 Ace Ct
4.84(
16
)
Approved Pro
Pedro Galvan Plumbing, Inc.
5405 Ace Ct
4.84(
16
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
21 years of experience

Pedro Galvan Ramirez Plumbing, Inc., is the premier plumbing contractor in the Richmond Area. We finish every job to the customer's standards. Call today for a free quote!

"Pedro is professional, patient and prompt. His skill level is top notch. I'd rehire him in a second."

Rolanda B on December 2018

Pedro Galvan Ramirez Plumbing, Inc., is the premier plumbing contractor in the Richmond Area. We finish every job to the customer's standards. Call today for a free quote!

"Pedro is professional, patient and prompt. His skill level is top notch. I'd rehire him in a second."

Rolanda B on December 2018


Avatar for R Plumbing Companies, Inc.
R Plumbing Companies, Inc.
202 Kingswood Ave
5.00(
3
)
Approved Pro
R Plumbing Companies, Inc.
202 Kingswood Ave
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
13 local quotes requested

We are 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 baasis of our business

"Helped me right away. Did not have to wait all day."

Julie H on September 2023

We are 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 baasis of our business

"Helped me right away. Did not have to wait all day."

Julie H on September 2023


Avatar for Budget Plumbing
Budget Plumbing
100 PERSIMMON CIRCLE
New on HomeAdvisorNew on Angi
Approved Pro
Budget Plumbing
100 PERSIMMON CIRCLE
New on AngiNew on HomeAdvisor
Approved Pro
8 years of experience
Free onsite estimate

We've been proudly serving the Bay Area and surrounding cities since 2015 and have created longstanding, trusting relationships with clients along the way. We are family owned and operated. Whether it's a drain cleaning or you'd like to remodel your whole bathroom/sewer, we've got you covered. "Affordable Plumbing Done Right" is our motto because we believe in fair pricing and treating everyone as if they were our family member.We know plumbing emergencies are never fun and always unexpected so our goal is to get them fixed expeditiously and correctly so you don't have to worry any longer. We can dry up all of your plumbing problems. By taking advantage of the latest plumbing methods and technology, we can quickly and efficiently take care of any job, saving you time and money. Budget Plumbing has the most experienced and knowledgeable plumbers in the Bay Area and beyond.

We've been proudly serving the Bay Area and surrounding cities since 2015 and have created longstanding, trusting relationships with clients along the way. We are family owned and operated. Whether it's a drain cleaning or you'd like to remodel your whole bathroom/sewer, we've got you covered. "Affordable Plumbing Done Right" is our motto because we believe in fair pricing and treating everyone as if they were our family member.We know plumbing emergencies are never fun and always unexpected so our goal is to get them fixed expeditiously and correctly so you don't have to worry any longer. We can dry up all of your plumbing problems. By taking advantage of the latest plumbing methods and technology, we can quickly and efficiently take care of any job, saving you time and money. Budget Plumbing has the most experienced and knowledgeable plumbers in the Bay Area and beyond.


Avatar for Platinum Plus Plumbing
Platinum Plus Plumbing
1550 Broadstone Parkway #1107
4.87(
378
)
Approved Pro
Platinum Plus Plumbing
1550 Broadstone Parkway #1107
4.87(
378
)
Approved Pro
Customers say: Super punctual
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
72 local quotes requested

We have 42 years of experience on our staff. We guaranty all of our work to the finest quality. There is no job too big or too small that we can't handle in a very timely manner.

"They showed up on time and got the job done in the time they said (1 hour). They were very competent and knew their trade well. Very professional and polite."

Stephen J on April 2025

We have 42 years of experience on our staff. We guaranty all of our work to the finest quality. There is no job too big or too small that we can't handle in a very timely manner.

"They showed up on time and got the job done in the time they said (1 hour). They were very competent and knew their trade well. Very professional and polite."

Stephen J on April 2025


Avatar for Gray Plumbing, Inc.
Gray Plumbing, Inc.
1735 Enterprise Dr, Ste 101
5.00(
5
)
Approved Pro
Gray Plumbing, Inc.
1735 Enterprise Dr, Ste 101
5.00(
5
)
Approved Pro
Super Service Award
Customers say: Quick response
22 local quotes requested
9 years of experience

We take great pride in our experience, expertise, and quality of the customer service we provide to meet our consumers needs. It is our mission to provide excellent workmanship, and 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

"Gray plumbing did a great job. Brandon, Andrew and Eric worked so hard to ensure that the work they did on our house is great and to our full satisfaction. They are all very professional and hardworking. I will recommend them and the company they represent to use for the plumbing needs anyone need done in their home. Thank you!"

Domingo D on March 2025

We take great pride in our experience, expertise, and quality of the customer service we provide to meet our consumers needs. It is our mission to provide excellent workmanship, and 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

"Gray plumbing did a great job. Brandon, Andrew and Eric worked so hard to ensure that the work they did on our house is great and to our full satisfaction. They are all very professional and hardworking. I will recommend them and the company they represent to use for the plumbing needs anyone need done in their home. Thank you!"

Domingo D on March 2025


Avatar for Beastbay Plumbing
Beastbay Plumbing
4562 E. 2nd St. Suite H
4.67(
186
)
Approved Pro
Beastbay Plumbing
4562 E. 2nd St. Suite H
4.67(
186
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
196 local quotes requested

Welcome to Beastbay Plumbing! We are committed to exceeding your expectations. We specialize in all plumbing needs. Whether its a regular or On Demand water heater, water filtration or water/drain re-pipe we can handle the job. We will always give you more that one option and guarantee customer satisfaction. We take pride in diagnosing problems and offering solutions that fit your needs. You can book appointment here (highlight, copy and paste link): https://bit.ly/3SxIfar

"Free competitive quote and technician was informative."

George D on April 2025

Welcome to Beastbay Plumbing! We are committed to exceeding your expectations. We specialize in all plumbing needs. Whether its a regular or On Demand water heater, water filtration or water/drain re-pipe we can handle the job. We will always give you more that one option and guarantee customer satisfaction. We take pride in diagnosing problems and offering solutions that fit your needs. You can book appointment here (highlight, copy and paste link): https://bit.ly/3SxIfar

"Free competitive quote and technician was informative."

George D on April 2025


Avatar for Oak Plumbing Inc
Oak Plumbing Inc
3852 Industrial Way
4.61(
90
)
Approved Pro
Oak Plumbing Inc
3852 Industrial Way
4.61(
90
)
Approved Pro
Super Service Award
Customers say: Super punctual
917 local quotes requested
9 years of experience

Oak Plumbing is a locally owned and operated plumbing company serving Solano, Marin & Contra Costa Counties. We provide options to prevent, repair, and maintain your water system to best fit your family’s needs. Our goal is to bring customer service back to the plumbing industry. We specialize in residential plumbing repair as well as preventative maintenance. We offer up-front pricing and also Pace financing to be able to service everyone equally. We want to fix the cause of the problem, not just the symptom. Safety is extremely important to us which is why all our technicians are fully trained, background checked, and drug tested.

"Excellent. Two employees did the job. Nice guys. Very polite and they were able to complete a complex job on time. I would definitely hire this company if I ever needed a plumber. The guy who sold us on the job was extremely knowledgeable which is why I selected this company."

Michael D on April 2025

Oak Plumbing is a locally owned and operated plumbing company serving Solano, Marin & Contra Costa Counties. We provide options to prevent, repair, and maintain your water system to best fit your family’s needs. Our goal is to bring customer service back to the plumbing industry. We specialize in residential plumbing repair as well as preventative maintenance. We offer up-front pricing and also Pace financing to be able to service everyone equally. We want to fix the cause of the problem, not just the symptom. Safety is extremely important to us which is why all our technicians are fully trained, background checked, and drug tested.

"Excellent. Two employees did the job. Nice guys. Very polite and they were able to complete a complex job on time. I would definitely hire this company if I ever needed a plumber. The guy who sold us on the job was extremely knowledgeable which is why I selected this company."

Michael D on April 2025


Avatar for Chriswell Home Improvements
Chriswell Home Improvements
3628 Madison Ave
4.39(
44
)
Approved Pro
Chriswell Home Improvements
3628 Madison Ave
4.39(
44
)
Approved Pro
Super Service Award
Customers say: Quality work
1716 local quotes requested
15 years of experience

Chriswell Home Improvements, Inc. is a veteran-owned home remodeling company offering various services, including roof replacement, Trex composite decking, James Hardie siding, exterior home coatings, Milgard and Anlin windows, sliding glass doors, entry doors, bathroom, and kitchen remodeling. We also have many financing options available to help make your home remodeling dreams a reality. Also, we offer discounts to Veterans, Teachers, and Seniors. Contact us today for a complimentary consultation!

"CHI has done an excellent job for me and I recommend them without hesitation for any remodeling work. Here's why: My job started out with an entry door replacement, evolved into a pantry expansion, and finally finished with an entire kitchen countertop replacement. I was very pleased with how they worked, the materials they used, and the attention to detail in the workmanship. And they were very responsive, communicated well and frequently, and checked in regularly to make sure the job was getting done right and on time. Each of their craftsmen were highly skilled, knew what they were doing, and didn't cut any corners. And each one was friendly and courteous to boot! I very much appreciated their attention to protecting the rest of the house, and they cleaned up the jobsite every single day at the end of their work day. Remodels are disruptive, no matter what. But this was about the least painful I've experienced. I have worked with a lot of contractors. CHI is a 10 out of 10."

Mark N on November 2024

Chriswell Home Improvements, Inc. is a veteran-owned home remodeling company offering various services, including roof replacement, Trex composite decking, James Hardie siding, exterior home coatings, Milgard and Anlin windows, sliding glass doors, entry doors, bathroom, and kitchen remodeling. We also have many financing options available to help make your home remodeling dreams a reality. Also, we offer discounts to Veterans, Teachers, and Seniors. Contact us today for a complimentary consultation!

"CHI has done an excellent job for me and I recommend them without hesitation for any remodeling work. Here's why: My job started out with an entry door replacement, evolved into a pantry expansion, and finally finished with an entire kitchen countertop replacement. I was very pleased with how they worked, the materials they used, and the attention to detail in the workmanship. And they were very responsive, communicated well and frequently, and checked in regularly to make sure the job was getting done right and on time. Each of their craftsmen were highly skilled, knew what they were doing, and didn't cut any corners. And each one was friendly and courteous to boot! I very much appreciated their attention to protecting the rest of the house, and they cleaned up the jobsite every single day at the end of their work day. Remodels are disruptive, no matter what. But this was about the least painful I've experienced. I have worked with a lot of contractors. CHI is a 10 out of 10."

Mark N on November 2024


Avatar for Service Champions Heating & Air Conditioning
Service Champions Heating & Air Conditioning
4430 Yankee Hill Rd
4.64(
653
)
Approved Pro
Service Champions Heating & Air Conditioning
4430 Yankee Hill Rd
4.64(
653
)
Approved Pro
Super Service Award
Customers say: Super punctual
6150 local quotes requested
22 years of experience

Service Champions is the leading heating and air conditioning contractor in Northern California servicing homeowners in East Bay, South Bay and Sacramento areas. We can make your home more comfortable and improve the quality of air you and your family breathe. We specialize in maintenance, repair and sales of all brands of air conditioners and heaters, and are experts in indoor air quality improvement through filtration, duct replacement, insulation and hospital grade UV lights. All the air conditioners we install have the new environmentally friendly refrigerant that does not damage the ozone. We also are huge proponents of super high efficient equipment, such as 95% efficient furnaces. This equipment saves homeowners a tremendous amount of money on their utility bills.

"Service was good and timely."

Gerald W on April 2025

Service Champions is the leading heating and air conditioning contractor in Northern California servicing homeowners in East Bay, South Bay and Sacramento areas. We can make your home more comfortable and improve the quality of air you and your family breathe. We specialize in maintenance, repair and sales of all brands of air conditioners and heaters, and are experts in indoor air quality improvement through filtration, duct replacement, insulation and hospital grade UV lights. All the air conditioners we install have the new environmentally friendly refrigerant that does not damage the ozone. We also are huge proponents of super high efficient equipment, such as 95% efficient furnaces. This equipment saves homeowners a tremendous amount of money on their utility bills.

"Service was good and timely."

Gerald W on April 2025


Avatar for Water Heaters Masters
Water Heaters Masters
2330 Bates Ave Suite D5
4.89(
105
)
Approved Pro
Water Heaters Masters
2330 Bates Ave Suite D5
4.89(
105
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
371 local quotes requested

We are a small family owned business and our reputation is built one satisfied customer at a time. In a time where finding honest and well trained experts in the plumbing industry is difficult, we pride ourselves in serving you better. We know you have choices and will make every effort to demonstrate that we are the best option for your water heater, tankless water heater, and high efficiency water heater needs. We offer competitive pricing, the best products, and most important great customer service. We also want to do work for your friends and family, so the best endorsement for us is a job well done and a happy customer. We do standard water heater repairs and replacement but also bigger projects like relocation jobs and tankless water heater installations to name a few. Our technicians are highly experienced and have installed thousands of water heaters. Call or text us at 925-817-8342 for a free estimate. We serve residential or commercial customers, including apartments and condos.

"Quite excellent with relatively affordable compare to other provider ( although still expensive ). I would recommend. Excellent service."

Bill Y on December 2024

We are a small family owned business and our reputation is built one satisfied customer at a time. In a time where finding honest and well trained experts in the plumbing industry is difficult, we pride ourselves in serving you better. We know you have choices and will make every effort to demonstrate that we are the best option for your water heater, tankless water heater, and high efficiency water heater needs. We offer competitive pricing, the best products, and most important great customer service. We also want to do work for your friends and family, so the best endorsement for us is a job well done and a happy customer. We do standard water heater repairs and replacement but also bigger projects like relocation jobs and tankless water heater installations to name a few. Our technicians are highly experienced and have installed thousands of water heaters. Call or text us at 925-817-8342 for a free estimate. We serve residential or commercial customers, including apartments and condos.

"Quite excellent with relatively affordable compare to other provider ( although still expensive ). I would recommend. Excellent service."

Bill Y on December 2024

...
Showing 1-10 of 757

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.