Top-rated tankless water heater installers.

Get matched with top tankless water heater installers in Red Oak, TX

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 installers in Red Oak - Updated Nov 2026

Avatar for Local Legend Plumbing
Local Legend Plumbing
5.0(
11
)
Tankless Water Heater - Install

Serving Red Oak, TX and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Had the unfortunate need of having our whole sewer system replaced which seemed so daunting to me. We met with a few companies and ended up going with Local Legend and are so glad we did. They were easy to work with and did such a thorough job. They also offered a good warranty which was nice on such a big job. We'll be calling them back for any and all of our plumbing needs from now on."
Installing Gas Line
Installing Gas Line
New P-Trap
9 neighbors recently requested a quote
Avatar for Mother Modern Plumbing, Sewer & Drain
Mother Modern Plumbing, Sewer & Drain
4.9(
61
)
Tankless Water Heater - Install

Serving Red Oak, TX and surrounding areas

Approved

In business since 2007

Free estimates

Warranties offered

"This was a tough decision for me to spend a lot of money to fix my seeer line. But the people at Mother Modern made me glad I did this, that I chose them. Tyler was top notch and Jerry was the best plumber I have ever hired and the excavation crew were the best."
Mother
Mother
Mother
Mother
Mother

+69

498 neighbors recently requested a quote
Recommended by34%of homeowners
Avatar for Ecowater Texas
Ecowater Texas
4.7(
142
)
Tankless Water Heater - Install

Serving Red Oak, TX and surrounding areas

In business since 2006

Free estimates

Emergency services offered

"TL:DR The American-made equipment works very well. The company ultimately assured the installation was complete and correct. But it was a rocky road. It was easy to schedule an appointment with a sales person. He spent a lot of time trying to sell me a system, when in fact I'd already done my research and knew I wanted to buy their products if they could improve my water quality. The salesman was able to give me measurements of dissolved solids and pH, which was important to me. Installation was fast; within about a week, our system was in place! Unfortunately, the installation did not pass inspection. When I contacted EcoWater Texas about the problem, the owner said the inspector was being unreasonable, and this had never happened before. He said he was uncomfortable having his plumber do the work the inspector required, and I would have to find someone else to do it. He said he'd pay the cost if it was reasonable. I contacted the inspector to get a detailed explanation of the work to be done. The inspector came over and gave me a red tag, formally failing the installation. He said I should call EcoWater Texas and tell them I had the tag, and if I submitted the tag to the licensing board they'd make it right. When I did that, EcoWater Texas agreed to find a plumber to do the work and cover the costs. The new plumber finished the installation, and it passed inspection. I then asked EcoWater Texas to test my water to make sure the system was working as advertised. This took a little time, but the salesman returned and did the testing. That's when I learned the system was only treating half my water! The rest entered the house in a different place. Apparently EcoWater Texas didn't check for that when they did the original installation. So EcoWater Texas had the second plumber come back and tie in the rest of the house water. The entire process took several months."
ERO 375
Credits
Softeners and Refiners
Recommended by91%of homeowners
Avatar for STUART HVAC, LLC
STUART HVAC, LLC
4.7(
49
)
Tankless Water Heater - Install

Serving Red Oak, TX and surrounding areas

In business since 2005

Emergency services offered

Credit card accepted

"Stuart HVAC, LLC Was amazing.  Stuart's knowledge, professionalism and attention to detail saved me time and money.  The man really knows his AC and heating.  He did so well on my air-conditioning system replacement that I had him come back out and replace my hot water heater.  All of which are working perfectly! 
I would recommend him to anyone who is seeking an honest, hardworking and skilled person in this area.
Regards,
Leslie
"
Recommended by93%of homeowners
Avatar for Lone Star Water Services
Lone Star Water Services
4.6(
93
)
Tankless Water Heater - Install

Serving Red Oak, TX and surrounding areas

In business since 2004

Free estimates

Credit card accepted

"Checked the entire house and water heater.? We discussed the water in depth, it would need to be replaced in the next year and it was 10 years old, at the end of it's life.? Adjusted all toilets and installed two new flappers, so the toilets don't run constantly and saves water.? Checked the shower and replaced the shower head.? We were entirely satisfied with the service."
Recommended by88%of homeowners
Avatar for Myles Plumbing LLC
Myles Plumbing LLC
5.0(
11
)
Tankless Water Heater - Install

Serving Red Oak, TX and surrounding areas

In business since 2022

Free estimates

Emergency services offered

"Work was done really good and I will definitely hire this company again and tell all my friends and family members how great this team is with customer satisfaction. I highly recommend Myles plumbing LLC."
full house remodel
full house remodel
full house remodel
full house remodel
full house remodel

+1

Response time11 hrs
Response rate85%
...
Showing 1-10 of 85

The Red Oak, TX homeowners’ guide to tankless water heater installations

From average costs to expert advice, get all the answers you need to get your job done.