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 Castro Valley

Pedro Galvan Plumbing, Inc.
5405 Ace Ct
4.85(
17
)
Approved Pro
Pedro Galvan Plumbing, Inc.
5405 Ace Ct
4.85(
17
)
Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% 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!

"We are incredibly grateful to Pedro Galvan and his team for stepping in during a moment of urgent need. When our hot water system suddenly failed, leaving us without hot water for daily essentials, Pedro responded with a level of professionalism, clarity, and compassion that is truly rare. From the very first call, Pedro was attentive, transparent about pricing, and committed to solving the problem quickly. He provided us with the most cost-effective and honest quote out of several we obtained—and, even more importantly, was able to come almost immediately when others could not. His workmanship was precise, efficient, and tidy. It was clear we were in the hands of someone who genuinely takes pride in his craft. In a world where so many service professionals overpromise and underdeliver, Pedro Galvan delivers exactly what he promises—and does so with warmth, integrity, and a deep respect for his clients. We recommend him without hesitation to anyone needing plumbing services."

nicola s on July 2025

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!

"We are incredibly grateful to Pedro Galvan and his team for stepping in during a moment of urgent need. When our hot water system suddenly failed, leaving us without hot water for daily essentials, Pedro responded with a level of professionalism, clarity, and compassion that is truly rare. From the very first call, Pedro was attentive, transparent about pricing, and committed to solving the problem quickly. He provided us with the most cost-effective and honest quote out of several we obtained—and, even more importantly, was able to come almost immediately when others could not. His workmanship was precise, efficient, and tidy. It was clear we were in the hands of someone who genuinely takes pride in his craft. In a world where so many service professionals overpromise and underdeliver, Pedro Galvan delivers exactly what he promises—and does so with warmth, integrity, and a deep respect for his clients. We recommend him without hesitation to anyone needing plumbing services."

nicola s on July 2025


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
3 years of experience

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 Prime Time Plumbing
Prime Time Plumbing
1804 Hoke Ct
5.00(
3
)
Approved Pro
Prime Time Plumbing
1804 Hoke Ct
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2 years of experience

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!

"I had a great experience with them. They did a tankless water heater for a fair price and helped install new water lines for my espresso machine in my cafe. Would recommend to anyone who needs the job done right!"

Alex H on October 2023

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!

"I had a great experience with them. They did a tankless water heater for a fair price and helped install new water lines for my espresso machine in my cafe. Would recommend to anyone who needs the job done right!"

Alex H on October 2023


Avatar for Handy Plumbing Man, LLC
Handy Plumbing Man, LLC
1011 American St
4.96(
27
)
Approved Pro
Handy Plumbing Man, LLC
1011 American St
4.96(
27
)
Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
71 local quotes requested

Our company provides exceptional service to the surrounding areas. Always taking pride our services, striving to execute with excellence, and putting our customer's in the forefront, is our philosophy. Whatever your home improvement needs may be, you can count on our company to leave you satisfied and happy. Call today , you'll be pleased you did. Thank you!

"I love these guys! They were attentive to all my needs and helped me feel at ease with the installation. 100/10 service!"

Olive F on June 2024

Our company provides exceptional service to the surrounding areas. Always taking pride our services, striving to execute with excellence, and putting our customer's in the forefront, is our philosophy. Whatever your home improvement needs may be, you can count on our company to leave you satisfied and happy. Call today , you'll be pleased you did. Thank you!

"I love these guys! They were attentive to all my needs and helped me feel at ease with the installation. 100/10 service!"

Olive F on June 2024


Avatar for Oak Plumbing
Oak Plumbing
3852 Industrial Way
4.63(
467
)
Approved Pro
Oak Plumbing
3852 Industrial Way
4.63(
467
)
Approved Pro
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
44 local quotes requested

Oak Plumbing is 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 basis of our business. Our customer's safety is extremely important, which is why all of our technicians are fully trained, background checked, and drug tested.

"Malik was very punctual, polite and went into detail about the work, what it will require and estimate time on how long the job will take. I am happy with the work and for sure hired Oak Plumbing for any future work, highly recommended them."

Marco G on April 2025

Oak Plumbing is 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 basis of our business. Our customer's safety is extremely important, which is why all of our technicians are fully trained, background checked, and drug tested.

"Malik was very punctual, polite and went into detail about the work, what it will require and estimate time on how long the job will take. I am happy with the work and for sure hired Oak Plumbing for any future work, highly recommended them."

Marco G on April 2025


Avatar for Pinnacle Plumbing, Inc.
Pinnacle Plumbing, Inc.
5432 Gary Blvd, Unit 603
5.00(
10
)
Approved Pro
Pinnacle Plumbing, Inc.
5432 Gary Blvd, Unit 603
5.00(
10
)
Approved Pro
Free onsite estimate
Emergency services offered

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"Camilo quickly responded to my request. He helped me with my rental property issues while I was out of the country. Very reliable, efficient and did not overcharge. Tenants were happy as well. I’ll use Pinnacle Plumbing again. Thanks again."

Alan H on June 2025

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"Camilo quickly responded to my request. He helped me with my rental property issues while I was out of the country. Very reliable, efficient and did not overcharge. Tenants were happy as well. I’ll use Pinnacle Plumbing again. Thanks again."

Alan H on June 2025


Avatar for Jose's Plumbing & Rooter Incorporated
Jose's Plumbing & Rooter Incorporated
3621 Lafayette Street, Unit 4
5.00(
5
)
Approved Pro
Jose's Plumbing & Rooter Incorporated
3621 Lafayette Street, Unit 4
5.00(
5
)
Approved Pro
Customers say: Quick response
15 local quotes requested
26 years of experience

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! Book with us online or feel free to give us a call today!

"Professional & knowleadeable of our plumbing needs . Jose was honest & sincere with communication & resolved and immediately remediated a better solution . The utility sink & plumbing is excellent work & efficiently completed the job with expectancy . The plumber was courteous & tidy around work area . We are happy with the job done especially customer service we received . Thank you ! "

Melany R 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! Book with us online or feel free to give us a call today!

"Professional & knowleadeable of our plumbing needs . Jose was honest & sincere with communication & resolved and immediately remediated a better solution . The utility sink & plumbing is excellent work & efficiently completed the job with expectancy . The plumber was courteous & tidy around work area . We are happy with the job done especially customer service we received . Thank you ! "

Melany R on May 2025


Avatar for Beastbay Plumbing
Beastbay Plumbing
4562 E. 2nd St. Suite H
4.67(
187
)
Approved Pro
Beastbay Plumbing
4562 E. 2nd St. Suite H
4.67(
187
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
273 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

"They were great!"

Dana W on July 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

"They were great!"

Dana W on July 2025


Avatar for 360 FULL SERVICE CONSTRUCTION
360 FULL SERVICE CONSTRUCTION
5.00(
2
)
Approved Pro
360 FULL SERVICE CONSTRUCTION
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
750 local quotes requested

360 Full Service Construction delivers exceptional results for residential, commercial, and industrial construction projects. Our skilled team brings innovation, expertise, and attention to detail to every project. We strive to exceed client expectations by delivering projects on time and within budget, regardless of their size and complexity. Contact us to turn your vision into a reality.

"Everything went well, did a thorough job & didn't cut corners. I had a number of holes in the wall from previous screws drilled in and 360FSC came prepared with spackle to fill it all in prior to paint. I love how the room turned out, it wouldn't have been the same if I tried to do it myself."

Rachel G on July 2024

360 Full Service Construction delivers exceptional results for residential, commercial, and industrial construction projects. Our skilled team brings innovation, expertise, and attention to detail to every project. We strive to exceed client expectations by delivering projects on time and within budget, regardless of their size and complexity. Contact us to turn your vision into a reality.

"Everything went well, did a thorough job & didn't cut corners. I had a number of holes in the wall from previous screws drilled in and 360FSC came prepared with spackle to fill it all in prior to paint. I love how the room turned out, it wouldn't have been the same if I tried to do it myself."

Rachel G on July 2024


Avatar for Skytech Builders
Skytech Builders
1714 Seville Way
5.00(
21
)
Approved Pro
Skytech Builders
1714 Seville Way
5.00(
21
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1311 local quotes requested

Welcome to Sky Tech builders, a general professional construction company. Our Decades of experience in the construction and home improvement Industry will help you achieve all your dreams and have the home you always wanted. At Sky Tech we are not just general contractors, we are also homeowners. We know what it’s like to have a big home improvement project in front of you. But we also know the satisfaction of the finished job, enjoying a new, updated home that you created. That’s why we are dedicated to making it as easy as possible for you to get exactly what you are seeking. As a construction company we want to help each and any of our customers accomplish their dreams of a complete home renovation. Our mission is to give you the best quality products and customer service making you and us enjoy this mutual adventure. 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! Check out our services offered and call or click to schedule an estimate today!

"The Hall and Master Bathrooms were fully renovated with new cabinets, countertops, showers and fixtures. Leo from Skytech assisted me along the way with option choices and recommendations. The crew was exceptional in their workmanship and were very detail oriented and made sure to clean the area prior to departure each day. I have received multiple compliments on the finished bathrooms. I would highly recommend Skytech Builders to anyone considering renovations and Leo in particular."

Bob H on July 2025

Welcome to Sky Tech builders, a general professional construction company. Our Decades of experience in the construction and home improvement Industry will help you achieve all your dreams and have the home you always wanted. At Sky Tech we are not just general contractors, we are also homeowners. We know what it’s like to have a big home improvement project in front of you. But we also know the satisfaction of the finished job, enjoying a new, updated home that you created. That’s why we are dedicated to making it as easy as possible for you to get exactly what you are seeking. As a construction company we want to help each and any of our customers accomplish their dreams of a complete home renovation. Our mission is to give you the best quality products and customer service making you and us enjoy this mutual adventure. 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! Check out our services offered and call or click to schedule an estimate today!

"The Hall and Master Bathrooms were fully renovated with new cabinets, countertops, showers and fixtures. Leo from Skytech assisted me along the way with option choices and recommendations. The crew was exceptional in their workmanship and were very detail oriented and made sure to clean the area prior to departure each day. I have received multiple compliments on the finished bathrooms. I would highly recommend Skytech Builders to anyone considering renovations and Leo in particular."

Bob H on July 2025

...
Showing 1-10 of 964
Share project details to get started.