Top-rated tankless water heater repair pros.

Get matched with top tankless water heater repair pros in Twain Harte, 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 Twain Harte - Updated Nov 2026

Avatar for At Your Service Plumbing
At Your Service Plumbing
5.0(
18
)
Tankless Water Heater - Repair

Serving Twain Harte, CA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"As Atomic Stays, a vacation rental management company, having reliable, fast-responding contractors is crucial to keeping our operations running smoothly and our guests happy. We recently ran into a urgent water heater issue at one of our properties in Arnold, and Frank with At Your Service Plumbing came through in a big way. Frank was exceptionally fast to respond to our messages, arrived promptly at the property, and took care of replacing the water heater without missing a beat. His quick turnaround saved the day for our guests! We highly recommend Frank for any plumbing needs and will definitely be using At Your Service Plumbing again in the future. Thanks, Frank!"
Water heater replacement
Water heater replacement
Shower valve replacement
Shower valve replacement
Toilet replacement

+2

54 neighbors recently requested a quote
Avatar for Dave's Plumbing
Dave's Plumbing
4.5(
22
)
Tankless Water Heater - Repair

Serving Twain Harte, CA and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Dave replaced a Noritz water heater for me and managed to locate the last one in town that matched my existing setup and got it for me at half price. Huge savings!!! Also got the job done from the first visit to install in under 24hrs."
Response time2 hrs
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Mega Power Electric, Inc
Mega Power Electric, Inc
5.0(
191
)
Tankless Water Heater - Repair

Serving Twain Harte, CA and surrounding areas

In business since 2000

Free estimates

Emergency services offered

Founded in 2000, for over 20 years Mega Power has been one of the premier solar companies in all of California, including many cities like Los Angeles, Riverside, Santa Clara, Granite Bay, Van Nuys, San Francisco, San Jose, Pasadena, Sacramento. Complete customer satisfaction, personalized approach and attention to details are our company’s intrinsic core values. We are providing the highest quality service as we enable our customers to save money, increase their property value and help improve the environment. Our team of certified professionals takes genuine pride in giving smooth, practical, Eco-friendly and positive solutions to our residential, commercial and industrial customers’ needs. All equipment and services meet both National Electrical Code requirements and local building codes. Mega Power offers a range of options toward green and energy-efficient solutions to all electrical power needs. We have extensive experience in building a complete solar panel system of all sizes on the roof or on the ground. Mega Power installs them with interconnection to the utility provider so that you could successfully sell excess electricity.

Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+32

Recommended by100%of homeowners
Avatar for J Hart Plumbing
J Hart Plumbing
4.6(
17
)
Tankless Water Heater - Repair

Serving Twain Harte, CA and surrounding areas

In business since 1984

Free estimates

Credit card accepted

""They were on time. We thought the water heater might be fixable, but after scrutinizing the problem, it was decided that we needed a new one. They were able to do it that day and in record time.""
Transformer Deck Drains
Boiler Room
Boiler Room
Boiler Room
Boiler Room

+10

Response time1 day
Recommended by100%of homeowners
Avatar for Landmark Energy Upgrades
Landmark Energy Upgrades
4.8(
59
)
Tankless Water Heater - Repair

Serving Twain Harte, CA and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"I'm very happy with the work that was done by Landmark construction and energy crew. At first, we met with Ron that came over and met with us about the issues that we had with our water heater and with the bills that we currently pay for electric. Ron recommended us to replace the bulky old water heater and to install a tankless system that will supply hot water immediately and with the use of less gas. We liked that idea and we decided to go for this project. Ron came over to our house with his 2 people that basically took care of all the removal and the installation of the new system. The work that they did took only 2 days from start to finish and now we have more space at the garage, and the bills are much lower than before…."
Cool Roof Install
Energy Upgrade
HVAC Air Duct
Home Energy Audit
Energy Upgrade Contractors

+6

Recommended by98%of homeowners
Avatar for Choice Home Warranty
Choice Home Warranty
4.0(
5,678
)
Tankless Water Heater - Repair

Serving Twain Harte, CA and surrounding areas

In business since 2008

Emergency services offered

Credit card accepted

"I specified that it was a tankless water heater, yet not surprisingly I was referred to a plumber who didn't know anything about tankless heaters, resulting in a waste of a couple of days. The second person did know about them, and so far the repair is working (fingers crossed). I wish CHW would pay attention to the details in my claim."
Recommended by81%of homeowners
Avatar for RYL Plumbing Corp
RYL Plumbing Corp
4.7(
7
)
Tankless Water Heater - Repair

Serving Twain Harte, CA and surrounding areas

In business since 2025

Free estimates

Credit card accepted

"The walls were down to the studs so the plumbers could access the pipes to convert them from a tub/shower set-up to a shower only set-up. This included installing a new valve for the shower. They did this part of the job on June 18. It took an afternoon and the job was complete when they left the premises that day. We paid them by check, $475. Once the shower pan, drain, and shower walls were installed the plumbers returned on August 14 to connect the drain and install the outside wall shower fixture and faucet. It took 3/4's of the day because they ran into an unforseen problem with our shut-off valve to the house. It failed to work properly and they ended up having to replace it. That was an additional cost which we agreed to pay ($300). The end of the day came, and the plumber took me into the shower stall to explain that the large rain-style showerhead is dripping, but those type of fixtures do that for a bit after the shower is turned off. We paid them $525 for the fixture and faucet install. Over the next 90 minutes I checked on the dripping fixture, and it had not stopped. It was more than a small drip. It was dripping a lot. I reached out to the plumber and he said the problem was likely the fixture needed replacing. The fixture was brand new out of the box. I did some research on YouTube about dripping shower fixtures and found that it is likely an issue with the valve. It could be damaged, faulty, or dirty. When I told the plumber this he disagreed. The next week he sent one of his guys back to look it it, and he said the same thing: The fixture needs replacing. You need to send it back and get a different type of unit. After this I went online again and found another opinion that it is the valve. So I sent the plumber a video of the unit dripping from the connection where I removed the hose shower head. When he saw this he agreed that it was the valve. However, he did not offer his service to come back to check the valve and provided a solution. This lead me to contact another plumber and this plumber concurred that it was a valve issue, the valve cartridge. He sent his guy over on August 25th, and he removed the cartridge and ordered a replacement one, and is going to come back on August 28th to install it for us. This is estimated to cost us $650, $400 labor and $200 for the cartridge. My gripe with the plumber I hired from Angie is that he left us with a drippy shower and did not care enough to come back and correct it. He made excuses that he was so busy and working out of the area. We did not pay a professional to leave us with a drippy shower unit. It is our opinion that the job was not completed satisfactorily. We kept having to turn our water to the house on and off because the dripping never stopped. The shower unit was turned off and it just kept dripping. The total we paid this company was $1300. $475 for the converted piping, $300 for the new house shut-off valve and $525 for the fixture installation. In addition, I asked the plumber multiple times to provide a receipt for the jobs they did, and have received no paperwork from them. This is most unprofessional. There should be a document with the charges and what they were for, and confirmation of payment."
Response time1 day
Recommended by14%of homeowners
Avatar for Hightower Plumbing Systems
Hightower Plumbing Systems
5.0(
4
)
Tankless Water Heater - Repair

Serving Twain Harte, CA and surrounding areas

In business since 2010

Free estimates

Emergency services offered

10 years experience half in service and repair work and the other half building commercial buildings or doing commercial tenant improvements. I hold Pro-Pex certification and Counterstrike Trac-Pipe(flexible Gas Pipe) certification while working in the area for over 20 years. I went to Granite Bay high school and have built great relationships with customers and suppliers over those years. I hold multiple commercial purchasing accounts with suppliers to enable me to purchase materials at the lowest Price and Best Quality. My company works locally and remains completely honest and straightforward so you get the best install and equipment at the lowest cost.

Water Supply Mainline Repipe
Copper House Mainline Shut-Off New Build+Irrigstion Mainline Shut-Off/Piping
Emergency Mainline Backup Hydro-Jetting
Water Supply Mainline Repipe
Copper House Mainline Shut-Off New Build+Irrigstion Mainline Shut-Off/Piping

+40

Recommended by100%of homeowners
Showing 1-10 of 11