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

Avatar for George Plumbing Co Inc
George Plumbing Co Inc
4.9(
328
)
Tankless Water Heater - Repair

Serving San Antonio, TX and surrounding areas

Approved

In business since 1947

Warranties offered

Credit card accepted

"Dan and Austin did a great job replacing our dead water heater. We were really impressed with these gentlemen. George Plumbing Company gave a reasonable estimate, but it took significantly longer (6 hours versus 2 hours) than anticipated because the previous water heater installation had been botched. Dan is obviously very observant and detail-oriented. He may be a perfectionist. My wife thinks that they left the laundry room cleaner than when they began the job. They were punctual, polite, pleasant and worked quietly. We can't say enough good things about George Plumbing, a GREAT company!"
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+3

Response time12 hrs
2 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for ReliaBee Air Electric Plumbing
ReliaBee Air Electric Plumbing
5.0(
33
)
Tankless Water Heater - Repair

Serving San Antonio, TX and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

Our plumbing team handles leak detection and repairs, drain clearing, plumbing inspections, repiping, tank and tankless water heaters, and water softeners. High-definition drain cameras and locating equipment help us pinpoint underground pipe problems, including breaks and root intrusions, so we can recommend the right repair.\n\nNeed help with your comfort or electrical system? Our team also provides HVAC repairs and replacements, duct sealing, airflow improvements, blown-in insulation, and electrical services.\n\nWith more than 35 years of industry experience, we deliver clear explanations, practical options, and upfront pricing. Our technicians are background-checked and drug-screened, and our company is licensed and insured.\n\nHundreds of 5-star reviews. Financing and lease-to-own options available. Free replacement estimates.\n\nOne call for your whole home. Safety, Comfort & Protection—that’s ReliaBee.

Tankless
Tankless in Attic
Drain Clogs?
Hydro-Jetter
sewage lift station

+125

8 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Jims Plumbing Now
Jims Plumbing Now
4.5(
199
)
Tankless Water Heater - Repair

Serving San Antonio, TX and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Chris came out and was very professional and knowledgeable. He was able to diagnose the problem with my sewer line and give me a great deal with a water heater. Completed the work in a timely matter and was very clean! Very impressed with his work, definitely using them again!"
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+14

Response time6 hrs
2 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Emergency Plumber LLC
Emergency Plumber LLC
4.7(
27
)
Tankless Water Heater - Repair

Serving San Antonio, TX and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"This guy was extremely nice. He was very helpful. He came in and took care of the water heater pretty quickly. He gave me some pointers on how to keep the water heater better. He cleaned up after himself, something that a previous company never did. He was courteous and treated me with respect. I would recommend him to other people."
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Response time6 hrs
Response rate100%
Recommended by81%of homeowners
Will Fix It
4.1(
88
)
Tankless Water Heater - Repair

Serving San Antonio, TX and surrounding areas

Approved (Corporate)

In business since 1994

Free estimates

Emergency services offered

"The repairmen was very professional and experience in his craft, I was shocked at how fast they responded to my request. It is a known fact that electricians,plumbers, carpenters and etc. are very expensive, but three or four hundred dollars to replace just a water faucet is entirely to much. As stated previously, I hired them to replace my air conditioner and they did a masterful job."
Unclogging a drain.
36 neighbors recently requested a quote
Recommended by71%of homeowners
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