Top-rated tankless water heater repair pros.

Get matched with top tankless water heater repair pros in Rialto, 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.

Top-Rated Tankless water heater repair pros in Rialto - Updated Nov 2026

Avatar for All Pro Cooling, Heating, Plumbing & Electrical
All Pro Cooling, Heating, Plumbing & Electrical
5.0(
16
)
Tankless Water Heater - Repair

Serving Rialto, CA and surrounding areas

Approved

In business since 1982

Free estimates

Emergency services offered

Since we opened our doors in 1991, All Pro Plumbing, Heating, Air & Electrical has been dedicated to providing residential and commercial customers in Ontario, CA with top-notch plumbing, heating, air conditioning, indoor air quality, and electrical services. Nearly 30 years later, we have grown significantly, but our values have not changed. We are just as committed to customer service and providing you with personalized options to meet your specific needs. We know that when you are dealing with an urgent plumbing, HVAC, or electrical issue, there isn't always time to wait around for hours for your technician to show up. Today, with more technicians, we are able to answer your call 24 hours a day, 7 days a week, and respond to your needs faster, almost always within the hour! When you call us for service, we'll work with you to make sure your problem gets solved according to your specific needs and budget.

My jobs
My jobs
My jobs
My jobs
My jobs

+7

204 neighbors recently requested a quote
Avatar for Alpine Plumbing, Heating, and Air
Alpine Plumbing, Heating, and Air
4.7(
36
)
Tankless Water Heater - Repair

Serving Rialto, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"I Called to get an in person quote for a tankless water heater flush and left this job with a whole house filter and a fridge connection. When Michael first arrived we inspected the tankless unit and tested the water to conclude flushing was not my best option. He then walked me through my options for home filters and we decided on a Halo system. Michael was very well educated on the subject and gave me the best value filter for my needs. He installed the unit the next day in less than a few hours and left me with a flawless work of art. I couldn't be more impressed with the professionalism he brings to this trade! I also requested to hook up a fridge and he did that in what seemed like 30 minutes. He will be the only plumber I call from now on!! Thank you Michael!!!"
Plumbing - Drain Cleaning Project
Sewer cleaned of roots and ready for lining
Prepping pipe for lining by removing massive roots
Mixing resin for liners, this resin gardens to create a solid pipe
Sewer robot in the pipe

+26

Response time9 hrs
7 neighbors recently requested a quote
Recommended by67%of homeowners
Avatar for Service Champions Plumbing, Heating & AC
Service Champions Plumbing, Heating & AC
4.4(
50
)
Tankless Water Heater - Repair

Serving Rialto, CA and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"Kayvan was a wonderful service tech! He was on time and professionally checked out the water heater and the HVAC system. He was so polite and friendly. He explained the need for a new filter in the heating unit and showed me photos of the unit located in the attic. He also offered to do a friendly deed for free, which I greatly appreciated, He’s a great asset to Service Champions!"
Area Drain Cleaning
Plumbing
Plumbing
Garbage Disposal
Drain Cleaning

+13

Response time4 hrs
Recommended by79%of homeowners
Avatar for Service Flow Plumbing
Service Flow Plumbing
5.0(
23
)
Tankless Water Heater - Repair

Serving Rialto, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"Service Flow Plumbing did an excellent job flushing my tankless water heater at a very reasonable cost. Rose provided outstanding customer service from start to finish, and Andrew—the technician who performed the flushing—was extremely professional, knowledgeable, and sure to explain everything clearly. The whole process was smooth and stress-free. Highly recommend their team!"
Sewer Main Valve
Sewer Main Valve
Sewer Main Valve
Sewer Main Valve
Sewer Main Valve

+81

Response time8 hrs
Response rate98%
22 neighbors recently requested a quote
Avatar for Right Solution Plumbing
Right Solution Plumbing
4.8(
16
)
Tankless Water Heater - Repair

Serving Rialto, CA and surrounding areas

Approved

In business since 2008

Emergency services offered

Warranties offered

"They were on time, knowledgeable, professional, friendly and cleaned up after job was done. They will be our professional plumbers when ever we need plumbing service. They came on date scheduled and finished that day. Thank you so much"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+13

Response time7 hrs
3 neighbors recently requested a quote
Recommended by69%of homeowners
Avatar for We Care Plumbing, Heating and Air - Murrieta
We Care Plumbing, Heating and Air - Murrieta
4.3(
137
)
Tankless Water Heater - Repair

Serving Rialto, CA and surrounding areas

Approved

In business since 1999

Warranties offered

Credit card accepted

We Care Plumbing, Heating and Air is the trusted plumbing company and HVAC contractor in Murrieta, CA, proudly serving Southern California since 2000. Our team specializes in reliable plumbing, heating, cooling, and indoor air quality solutions for both homes and businesses. Available 24/7, we handle everything from emergency plumbing repairs to complete HVAC installations with unmatched care and professionalism. As a top-rated service provider, we’re dedicated to keeping your family comfortable year-round. Count on We Care Plumbing, Heating and Air for dependable service, honest pricing, and long-lasting results in Murrieta and beyond. \n \nWe Care To Go the Extra Mile! We have 24 hour LIVE answering!

11 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Ace’s Plumbing Services
Ace’s Plumbing Services
5.0(
20
)
Tankless Water Heater - Repair

Serving Rialto, CA and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Athen was very professional. He emailed me and text me to confirm our appointment. He provided me with a written estimate and completed the job as agreed. I believe he was very reasonable in his cost for replacing the garbage disposal. He was quick and efficient. I would use his services again."
Water Heater Installation
Valve/Regulator
Tankless Heater
Copper Spot Repair
Automatic Shutoff

+2

Avatar for ASCENT PLUMBING INC
ASCENT PLUMBING INC
4.7(
99
)
Tankless Water Heater - Repair

Serving Rialto, CA and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

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 basis of our business.

Sink Install
Sink Install
Sink Install
Sink Install
Sink Install

+3

7 neighbors recently requested a quote
Recommended by89%of homeowners
...
Showing 1-10 of 140