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

Avatar for Will's Plumbing & Testing Service
Will's Plumbing & Testing Service
4.7(
1,819
)
Tankless Water Heater - Install

Serving San Antonio, TX and surrounding areas

Approved

Super Service Award Winner

In business since 1999

Emergency services offered

Warranties offered

"I needed a new hot water heater and decided to go with a tankless heater. Needed either a filtration system to go with it and Marc was the Master Plumber who came by to provide an estimate. Marc was very informative and explained everything he would need to do with rerouting the water line, installing all items and the length of time it would take. I spent weeks researching tankless heaters, etc and calling Marc with questions. He was very patient and answered all my questions. The job was handled with care and Marc and his assistants took their time making sure the job was done correctly. Samantha, in the finance office, was very sweet and handled all the necessary work expertly. I am happy with all the work done. Thank you to everyone at Will’s Plumbing for your professionalism, attention to detail and for answering all my questions with so much patience."
Rinnai Tankless
Rinnai Tankless
Hydro jetting
Hydro jetting
Custom Tub & Tub Spout

+3

Response time12 hrs
Response rate100%
1 neighbors recently requested a quote
Green Ridge Services
4.8(
75
)
Tankless Water Heater - Install

Serving San Antonio, TX and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

We offer friendly and courteous service. We are always ready to answer your questions or address your concerns. We have built our reputation on our commitment to providing quality service. This has earned us an impressive reputation with many valuable customers. We take pride in delivering value through top quality work with excellent prices.

4 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for George Plumbing Co Inc
George Plumbing Co Inc
4.9(
328
)
Tankless Water Heater - Install

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!"
Additional Photos
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+3

Response time12 hrs
2 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Goettl Air Conditioning & Plumbing
Goettl Air Conditioning & Plumbing
4.3(
1,078
)
Tankless Water Heater - Install

Serving San Antonio, TX and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1939

Free estimates

Emergency services offered

"The installers set the water temperature of our new water heater way too low. When we called about not having enough hot water a supervisor came out the next day, determined that the problem was the thermastat, reset it and everything is now working satisfactorly."
Photos
We do things the right way, not the easy way.
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Photos

+10

94 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for ReliaBee Air Electric Plumbing
ReliaBee Air Electric Plumbing
5.0(
33
)
Tankless Water Heater - Install

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

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

Serving San Antonio, TX and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Parker and Sons sent out two guys to quote installation of a tankless hot water heater.  They were very responsive and flexible in scheduling time to come out.  They were also very punctual and professional.  They weren't as thorough as some of the other companies that came out, but perhaps that's just knowing what they have to do.  Where I was let down was the price. The quoted prices was 2X the cost of the other two companies I had out to quote the same job.
"
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+14

Response time6 hrs
2 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for DilMak Services, LLC
DilMak Services, LLC
4.5(
140
)
Tankless Water Heater - Install

Serving San Antonio, TX and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"This was a pool heating heat pump, for which many companies have refused service. DilMak immediately realized it is really just an outside condenser unit to pump heat (hot Freon) through a coil wrapped around another coil through which my pool water circulates. The tech they sent out is a real cracker jack expert and got me up and running!"
Maintenance
Response time6 hrs
Recommended by92%of homeowners
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