Top-rated tankless water heater repair pros.

Get matched with top tankless water heater repair pros in Alta Loma, CA

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.

Find Tankless water heater repair pros in Alta Loma

Avatar for RT Olson Plumbing, Heating and Air Conditioning, LLC

RT Olson Plumbing, Heating and Air Conditioning, LLC

4.69(
162
)
Approved Pro

RT Olson Plumbing, Heating and Air Conditioning, LLC

4.69(
162
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
36 years of experience

RT Olson Plumbing, Heating and Air Conditioning is a Family Owned company out of Corona and Riverside CA with OVER 500 FIVE Star Online Customer Reviews! We specialize in Residential Service and Repair which includes Heating and AC repair. Heating and AC installation, Indoor air quality, Duct repair and replacement, Drain Cleaning, Slab Leak Detection, Whole Home Water Treatment Systems and anything else plumbing or HVAC related. We also specialize in Water Damage Claims, working with and billing your insurance directly for Leak Detections and plumbing repairs along with water damage. We are a one stop shop for all you plumbing needs and offer Free Estimates and flat rate pricing. We also have payment plans for any plumbing job. Don't hesitate to call us TODAY We know what causes water damage and flooding so be proactive and have your home evaluated today! Save thousands on future plumbing or heating and AC problems that could have been avoided with routine maintenance.

"If I can give this plumbing company zero stars I would. I had a slab leak, and this company came out for leak detection. I was told that I have two leaks and they cut two lines. They were charging almost 65000 for rerouting two lines. My insurance company also brought their own plumbers and did their leak detection and they found only one leak. The adjuster called RT Olson a fraud company and he almost declined my claim. The insurance refused to fix the two cut lines. They only covered one line and I had to pay for the other line out of pocket. I asked RT Olson to fix the other line that he cut and was not leaking but he refuse to take responsibility. Then he send me an invoice for the leak detection and threatens me to take it to collection and add extra fees. This company is a fraud."

Masa S on December 2022

RT Olson Plumbing, Heating and Air Conditioning is a Family Owned company out of Corona and Riverside CA with OVER 500 FIVE Star Online Customer Reviews! We specialize in Residential Service and Repair which includes Heating and AC repair. Heating and AC installation, Indoor air quality, Duct repair and replacement, Drain Cleaning, Slab Leak Detection, Whole Home Water Treatment Systems and anything else plumbing or HVAC related. We also specialize in Water Damage Claims, working with and billing your insurance directly for Leak Detections and plumbing repairs along with water damage. We are a one stop shop for all you plumbing needs and offer Free Estimates and flat rate pricing. We also have payment plans for any plumbing job. Don't hesitate to call us TODAY We know what causes water damage and flooding so be proactive and have your home evaluated today! Save thousands on future plumbing or heating and AC problems that could have been avoided with routine maintenance.

"If I can give this plumbing company zero stars I would. I had a slab leak, and this company came out for leak detection. I was told that I have two leaks and they cut two lines. They were charging almost 65000 for rerouting two lines. My insurance company also brought their own plumbers and did their leak detection and they found only one leak. The adjuster called RT Olson a fraud company and he almost declined my claim. The insurance refused to fix the two cut lines. They only covered one line and I had to pay for the other line out of pocket. I asked RT Olson to fix the other line that he cut and was not leaking but he refuse to take responsibility. Then he send me an invoice for the leak detection and threatens me to take it to collection and add extra fees. This company is a fraud."

Masa S on December 2022


Avatar for Cruz Plumbing and Rooter Services

Cruz Plumbing and Rooter Services

4.92(
13
)
Approved Pro

Cruz Plumbing and Rooter Services

4.92(
13
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
24 years of experience

Cruz Plumbing and Rooter Services began our business with the main focus on Customer Service. It is our goal to treat every client as family. We will answer each question, giving you the confidence in our services, repairs and pricing. Our pride is to provide our customers with the information for them to be able to make informed, educated decisions when it comes to their plumbing service needs. Our team has been highly trained in all jobs, large or small, and is in contact with myself to ensure the job is completed to the stated specifics. We thank you for selecting Cruz Plumbing and Rooter Services. We appreciate your call to give us the opportunity to provide you with the best services and pricing available. Christian Cruz

"Very Professional and knowledgeable with plumbing. Mr Cruz provided quick service and understood why we wanted this project done quickly to facilitate my mother's handicap situation. Hoping to give him more business in the future. Thank You"

Kaizad A on June 2022

Cruz Plumbing and Rooter Services began our business with the main focus on Customer Service. It is our goal to treat every client as family. We will answer each question, giving you the confidence in our services, repairs and pricing. Our pride is to provide our customers with the information for them to be able to make informed, educated decisions when it comes to their plumbing service needs. Our team has been highly trained in all jobs, large or small, and is in contact with myself to ensure the job is completed to the stated specifics. We thank you for selecting Cruz Plumbing and Rooter Services. We appreciate your call to give us the opportunity to provide you with the best services and pricing available. Christian Cruz

"Very Professional and knowledgeable with plumbing. Mr Cruz provided quick service and understood why we wanted this project done quickly to facilitate my mother's handicap situation. Hoping to give him more business in the future. Thank You"

Kaizad A on June 2022


Avatar for Pisces Plumbing

Pisces Plumbing

5.00(
10
)
Approved Pro

Pisces Plumbing

5.00(
10
)
Approved Pro
Super Service Award
2 years of experience
Free onsite estimate

We have a single mission: Complete Customer Satisfaction! We have consistently focused on the needs of our customers, providing personalized attention and a stress-free experience. You will find us to be competitively priced with close attention to the details. Our reputation is based on service, safety, and quality, regardless of how large or small the job. We have a service call charge of 60$ this includes first hours worth of work, materials not include. Cost will go up according up to scope of project. We look forward to building a lasting relationship and guarantee your satisfaction!

"He completed a huge job of repiping my entire house in a single day! His crew were incredible, polite, and incredibly professional. Will hire them again!"

Chris B on May 2025

We have a single mission: Complete Customer Satisfaction! We have consistently focused on the needs of our customers, providing personalized attention and a stress-free experience. You will find us to be competitively priced with close attention to the details. Our reputation is based on service, safety, and quality, regardless of how large or small the job. We have a service call charge of 60$ this includes first hours worth of work, materials not include. Cost will go up according up to scope of project. We look forward to building a lasting relationship and guarantee your satisfaction!

"He completed a huge job of repiping my entire house in a single day! His crew were incredible, polite, and incredibly professional. Will hire them again!"

Chris B on May 2025


Avatar for Rooter Warrior Plumbing & Drain Cleaning - Home  Facebook

Rooter Warrior Plumbing & Drain Cleaning - Home Facebook

5.00(
1
)
Approved Pro

Rooter Warrior Plumbing & Drain Cleaning - Home Facebook

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
8 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!

"Very helpful but not pushy about parts made me feel very comfortable."

Alax M on November 2018

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!

"Very helpful but not pushy about parts made me feel very comfortable."

Alax M on November 2018


Avatar for Do It Right Plumbers, Inc.

Do It Right Plumbers, Inc.

4.42(
489
)
Approved Pro

Do It Right Plumbers, Inc.

4.42(
489
)
Approved Pro
Customers say: True professional
128 local quotes requested
19 years of experience

Do It Right Plumbers, Inc., started with the mission of providing customers with the highest quality and experience possible. With our company, you will no longer experience a plumber that talks, looks, and smells like the average plumber. Our technicians are professional, courteous, and knowledgeable and are an integral part of our existence as a business. We value our employees and, in turn, they carry out our mission of providing the best experience possible to all of our customers throughout Orange County, Santa Ana, and Tustin. Our goal is to provide you with a WOW experience every time so that you consider us your family plumber for years to come.

"Joe from Do It Right Plumbers was great. Fast and efficient."

DAVID S on September 2025

Do It Right Plumbers, Inc., started with the mission of providing customers with the highest quality and experience possible. With our company, you will no longer experience a plumber that talks, looks, and smells like the average plumber. Our technicians are professional, courteous, and knowledgeable and are an integral part of our existence as a business. We value our employees and, in turn, they carry out our mission of providing the best experience possible to all of our customers throughout Orange County, Santa Ana, and Tustin. Our goal is to provide you with a WOW experience every time so that you consider us your family plumber for years to come.

"Joe from Do It Right Plumbers was great. Fast and efficient."

DAVID S on September 2025


Avatar for Thompson Family Plumbing and Drain

Thompson Family Plumbing and Drain

5.00(
5
)
Approved Pro

Thompson Family Plumbing and Drain

5.00(
5
)
Approved Pro
7 years of experience
Emergency services offered

Thompson Family Plumbing and Drain, is a family-owned and operated business that takes pride in honest, dependable service. We believe in doing the job right the first time, treating every customer with fairness, respect, and integrity. Our hands-on experience and knowledge of the trade allow us to provide quality workmanship you can trust. As a family business, we look out for our customers’ best interests and make their concerns our top priority, because when you invite us into your home, you become part of the Thompson family.

Thompson Family Plumbing and Drain, is a family-owned and operated business that takes pride in honest, dependable service. We believe in doing the job right the first time, treating every customer with fairness, respect, and integrity. Our hands-on experience and knowledge of the trade allow us to provide quality workmanship you can trust. As a family business, we look out for our customers’ best interests and make their concerns our top priority, because when you invite us into your home, you become part of the Thompson family.


Avatar for Western Rooter & Plumbing

Western Rooter & Plumbing

4.89(
155
)
Approved Pro

Western Rooter & Plumbing

4.89(
155
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
193 local quotes requested

Call NOW: (626) 889-7990! Available 24/7 for all your plumbing needs! At the heart of our services is a commitment to comprehensive plumbing solutions - from water, sewer, to gas lines, we handle it all. Our expertise spans routine maintenance to urgent emergency repairs, ensuring your plumbing is always in top condition. Drain cleaning? We're on it with both traditional and hydro jetting techniques. But that's just the start. We offer water heater services, including both classic and cutting-edge tankless installations, repairs, and maintenance, ensuring your hot water flow is uninterrupted. Our approach to clean, safe water extends to installing water treatment systems, including softeners and filtration, for pure, drinkable water right from your tap. We're also proactive about the health of your plumbing and sewer lines, offering detailed inspections with our sewer scope technology. Many maintenance services come with complimentary camera inspections to extend your system's lifespan and pinpoint any issues early on. Gas lines and safety valves, especially emergency earthquake shutoffs, are within our expertise, along with certified under street repairs. And for those with septic systems, we provide thorough septic pumping services. No matter the challenge - water, sewer, or gas lines - we're fully equipped to tackle it. Plus, we're thrilled to extend our free travel zone, now covering the Victorville area, bringing our reliable services closer to you!

"They were excellent. The guy was super nice and explained everything as he went and showed me things about it. I couldn’t have asked for any better service. Would definitely hire them again!"

Steve L S on January 2026

Call NOW: (626) 889-7990! Available 24/7 for all your plumbing needs! At the heart of our services is a commitment to comprehensive plumbing solutions - from water, sewer, to gas lines, we handle it all. Our expertise spans routine maintenance to urgent emergency repairs, ensuring your plumbing is always in top condition. Drain cleaning? We're on it with both traditional and hydro jetting techniques. But that's just the start. We offer water heater services, including both classic and cutting-edge tankless installations, repairs, and maintenance, ensuring your hot water flow is uninterrupted. Our approach to clean, safe water extends to installing water treatment systems, including softeners and filtration, for pure, drinkable water right from your tap. We're also proactive about the health of your plumbing and sewer lines, offering detailed inspections with our sewer scope technology. Many maintenance services come with complimentary camera inspections to extend your system's lifespan and pinpoint any issues early on. Gas lines and safety valves, especially emergency earthquake shutoffs, are within our expertise, along with certified under street repairs. And for those with septic systems, we provide thorough septic pumping services. No matter the challenge - water, sewer, or gas lines - we're fully equipped to tackle it. Plus, we're thrilled to extend our free travel zone, now covering the Victorville area, bringing our reliable services closer to you!

"They were excellent. The guy was super nice and explained everything as he went and showed me things about it. I couldn’t have asked for any better service. Would definitely hire them again!"

Steve L S on January 2026


Avatar for 811 PLUMBING

811 PLUMBING

5.00(
2
)
Approved Pro

811 PLUMBING

5.00(
2
)
Approved Pro
1 years of experience

Our mission at 811 PLUMBING is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on a home owners face at the end of a project! 811 PLUMBING stacks up with the competition and surpasses it with competitive prices, second to none workmanship and a prompt/responsive team! We give you quality that you can measure, and a finished product that will enhance your home forever. Call us today!

"I had a clogged drain line that has bin giving me issues for the past few months i thought it was a simple clog that was in my kitchen but after trying many diys using drano, vinegar with hot water would only help temporarily after that i just decided to call the professionals the owner alex was extremely helpful and knowledgeable and showed me were my clog was with a camera and cleared the line after everything was done my sink worked like new turns out i had grease buildup up and hair im happy and satisfied great customer service and speedy solution as well as affordable pricing "

jose p on January 2026

Our mission at 811 PLUMBING is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on a home owners face at the end of a project! 811 PLUMBING stacks up with the competition and surpasses it with competitive prices, second to none workmanship and a prompt/responsive team! We give you quality that you can measure, and a finished product that will enhance your home forever. Call us today!

"I had a clogged drain line that has bin giving me issues for the past few months i thought it was a simple clog that was in my kitchen but after trying many diys using drano, vinegar with hot water would only help temporarily after that i just decided to call the professionals the owner alex was extremely helpful and knowledgeable and showed me were my clog was with a camera and cleared the line after everything was done my sink worked like new turns out i had grease buildup up and hair im happy and satisfied great customer service and speedy solution as well as affordable pricing "

jose p on January 2026


"I just wanna talk about Marco. He’s fantastic. Very fine gentleman. He do a very good job appreciating thank you and thank you. Have a good day."

Douglas M on August 2025

We are a Family Owned Business here at Super Marco Plumbing we offer Free estimates to All our Customers. We service All Plumbing Services and Drains.

"I just wanna talk about Marco. He’s fantastic. Very fine gentleman. He do a very good job appreciating thank you and thank you. Have a good day."

Douglas M on August 2025


Avatar for Authority Plumbing, Heating and Air

Authority Plumbing, Heating and Air

5.00(
9
)
Approved Pro

Authority Plumbing, Heating and Air

5.00(
9
)
Approved Pro
Customers say: Quick response
22 local quotes requested
2 years of experience

We take great pride in our experience, expertise, quality, and customer service that we provide to meet your 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.

" I recently had the pleasure of working with Authority Plumbing, and I cannot recommend them highly enough. From the outset, they came to my home with a plan that demonstrated their deep understanding of plumbing challenges. Clayton, the technician assigned to my project, was exceptional. He took the time to listen to my concerns and opinions, making sure that I felt heard and valued. He explained each step, ensuring I was comfortable with the plan before proceeding. When a sub-contractor was brought on to streamline the process started making several errors, Clayton quickly took charge of the situation. They fixed these mistakes, alongside resolving my initial drainage issues, at no additional expense, was truly remarkable. The team demonstrated a genuine commitment to ensuring the work was completed to the highest standard. Thanks to their efforts, my plumbing issues have been resolved. I would not hesitate to recommend them to anyone in need of professional plumbing services. "

Sherrie P on October 2025

We take great pride in our experience, expertise, quality, and customer service that we provide to meet your 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.

" I recently had the pleasure of working with Authority Plumbing, and I cannot recommend them highly enough. From the outset, they came to my home with a plan that demonstrated their deep understanding of plumbing challenges. Clayton, the technician assigned to my project, was exceptional. He took the time to listen to my concerns and opinions, making sure that I felt heard and valued. He explained each step, ensuring I was comfortable with the plan before proceeding. When a sub-contractor was brought on to streamline the process started making several errors, Clayton quickly took charge of the situation. They fixed these mistakes, alongside resolving my initial drainage issues, at no additional expense, was truly remarkable. The team demonstrated a genuine commitment to ensuring the work was completed to the highest standard. Thanks to their efforts, my plumbing issues have been resolved. I would not hesitate to recommend them to anyone in need of professional plumbing services. "

Sherrie P on October 2025

...
Showing 1-10 of 1031