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Tankless water heater installers in San Antonio

Avatar for Plumbing Diagnostic & Repair
Plumbing Diagnostic & Repair
PO BOX 116
New on HomeAdvisorNew on Angi
Approved Pro
Plumbing Diagnostic & Repair
PO BOX 116
New on AngiNew on HomeAdvisor
Approved Pro
6 years of experience
Free onsite estimate

Plumbing Diagnostic & Repair is 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. Please give us a call today!

Plumbing Diagnostic & Repair is 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. Please give us a call today!


Avatar for Juan's Plumbing Services, LLC
Juan's Plumbing Services, LLC
10730 Potranco Rd, Suite 122 Box 203
5.00(
5
)
Approved Pro
Juan's Plumbing Services, LLC
10730 Potranco Rd, Suite 122 Box 203
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
6 years of experience

Juan's Plumbing Services is a locally owned & operated business located in San Antonio. With over 14 years of experience as a Master Plumber, you can trust us to complete your plumbing project to perfection every single time. We pride ourselves on delivering exceptional customer service and turning every customer into a life-time customer. Call today to set an appointment! You'll be glad you did.

"Will definitely recommend Juanâ s plumbing. Had my repair done the same day."

Maria J on May 2023

Juan's Plumbing Services is a locally owned & operated business located in San Antonio. With over 14 years of experience as a Master Plumber, you can trust us to complete your plumbing project to perfection every single time. We pride ourselves on delivering exceptional customer service and turning every customer into a life-time customer. Call today to set an appointment! You'll be glad you did.

"Will definitely recommend Juanâ s plumbing. Had my repair done the same day."

Maria J on May 2023


Avatar for Palomino Master Plumbing, LLC
Palomino Master Plumbing, LLC
29015 Prospect Creek
5.00(
10
)
Approved Pro
Palomino Master Plumbing, LLC
29015 Prospect Creek
5.00(
10
)
Approved Pro
Customers say: Quality work
6 years of experience
Free onsite estimate

At Palomino Master Plumbing, we offer friendly and courteous service. We use only the best materials and we are always eager 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.

"We had a great experience with Mr Palomino, didn't over sell and was very fair on price, he did a great job"

rafael l on November 2021

At Palomino Master Plumbing, we offer friendly and courteous service. We use only the best materials and we are always eager 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.

"We had a great experience with Mr Palomino, didn't over sell and was very fair on price, he did a great job"

rafael l on November 2021


Avatar for 4m Plumbing Services
4m Plumbing Services
5707 Horizon Dr.
5.00(
11
)
Approved Pro
4m Plumbing Services
5707 Horizon Dr.
5.00(
11
)
Approved Pro
4 years of experience
Free onsite estimate

San Antonio homeowners are smart and we know you’re tired of being overcharged by out-of-town companies that treat you like just another number. At 4M Plumbing, we were born and raised right here in San Antonio. We don’t answer to shareholders, we answer to our neighbors. That’s why we built a plumbing company around what matters to real people here: ✔️ Fair prices that don’t feel like hospital bills ✔️ Quick response times ✔️ Clear communication — start to finish ✔️ Clean, respectful, professional service We specialize in water heaters, sewer line replacements, leak repairs, and more, plus we back our work with real warranties: 🔧 10 years on water heaters 🔧 5 years on sewer line replacements No corporate tricks. Just good plumbing.

"Yes he did! Very knowledgeable and great customer service ?"

devin o on May 2025

San Antonio homeowners are smart and we know you’re tired of being overcharged by out-of-town companies that treat you like just another number. At 4M Plumbing, we were born and raised right here in San Antonio. We don’t answer to shareholders, we answer to our neighbors. That’s why we built a plumbing company around what matters to real people here: ✔️ Fair prices that don’t feel like hospital bills ✔️ Quick response times ✔️ Clear communication — start to finish ✔️ Clean, respectful, professional service We specialize in water heaters, sewer line replacements, leak repairs, and more, plus we back our work with real warranties: 🔧 10 years on water heaters 🔧 5 years on sewer line replacements No corporate tricks. Just good plumbing.

"Yes he did! Very knowledgeable and great customer service ?"

devin o on May 2025


Avatar for Kerrville Plumbing +
Kerrville Plumbing +
516 Sidney Baker St Unit 200C
5.00(
7
)
Approved Pro
Kerrville Plumbing +
516 Sidney Baker St Unit 200C
5.00(
7
)
Approved Pro
Customers say: Quick response
15 local quotes requested
31 years of experience

We take great pride in our experience, expertise, quality and customer service, that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship, and complete customer satisfaction, from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate, with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large, or small the job. Call us today!

"Kerrville Plumbing did an all around great job removing and replacing two toilets for us.They were helpful in finding the exact, difficult to find toilets I wanted. They were helpful price they quoted was very fair. Two plumbers arrived promptly, got everything done in about an hour, and cleaned up after the installation. It was great doing business with them and I would definitely hire then again in the future."

Patricia M on May 2025

We take great pride in our experience, expertise, quality and customer service, that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship, and complete customer satisfaction, from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate, with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large, or small the job. Call us today!

"Kerrville Plumbing did an all around great job removing and replacing two toilets for us.They were helpful in finding the exact, difficult to find toilets I wanted. They were helpful price they quoted was very fair. Two plumbers arrived promptly, got everything done in about an hour, and cleaned up after the installation. It was great doing business with them and I would definitely hire then again in the future."

Patricia M on May 2025


Avatar for Nation Plumbing, LLC
Nation Plumbing, LLC
9012 FM 1976 Suite 302
4.75(
4
)
Approved Pro
Nation Plumbing, LLC
9012 FM 1976 Suite 302
4.75(
4
)
Approved Pro
Customers say: Quick response
8 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer’s needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Jorge and his crew came out quickly after setting up the job for a new water heater. Very knowledgable, quick, and did the install the correct way that hadn’t been done with the previous install. They went above and beyond my expectations and the pricing was excellent. Will be getting my business for all my future plumbing needs"

Christopher C on March 2025

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer’s needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Jorge and his crew came out quickly after setting up the job for a new water heater. Very knowledgable, quick, and did the install the correct way that hadn’t been done with the previous install. They went above and beyond my expectations and the pricing was excellent. Will be getting my business for all my future plumbing needs"

Christopher C on March 2025


Owners have combined 10+ years in service, Plumbers have over 50

"Wonderful. "

Samantha B on June 2025


Avatar for 1-800-Plumber + Air of East San Antonio
1-800-Plumber + Air of East San Antonio
8845 FM 1976 Suite 107
4.80(
5
)
Approved Pro
1-800-Plumber + Air of East San Antonio
8845 FM 1976 Suite 107
4.80(
5
)
Approved Pro
Customers say: Quick response
133 local quotes requested
1 years of experience

1-800-Plumber + Air is focused on being the BEST! It's not about being better than everyone else, instead our focus is on providing you with the fast, dependable plumbing and emergency services when you need it most. Our goal is to give you the BEST experience you have ever received from a service based business.

"Polite, fast friendly service. They were really nice to work with. Replaced outdoor faucet and washing machine faucets, and did a great job. Quick even with our older quirky house. I would recommend this company for friendly, professional service with a very fair price."

Suzanne L on July 2025

1-800-Plumber + Air is focused on being the BEST! It's not about being better than everyone else, instead our focus is on providing you with the fast, dependable plumbing and emergency services when you need it most. Our goal is to give you the BEST experience you have ever received from a service based business.

"Polite, fast friendly service. They were really nice to work with. Replaced outdoor faucet and washing machine faucets, and did a great job. Quick even with our older quirky house. I would recommend this company for friendly, professional service with a very fair price."

Suzanne L on July 2025


Avatar for Kings Plumbing LLC
Kings Plumbing LLC
215 W BANDERA RD. #114-218
5.00(
7
)
Approved Pro
Kings Plumbing LLC
215 W BANDERA RD. #114-218
5.00(
7
)
Approved Pro
1 years of experience
Free onsite estimate

At Kings Plumbing, we deliver plumbing services fit for royalty across Boerne, San Antonio, and the Texas Hill Country. Locally owned and operated, we are proud to offer expert craftsmanship, honest pricing, and reliable service you can trust. From minor repairs to major installations, our licensed professionals treat your home with respect, working quickly and cleanly to get the job done right the first time. We specialize in everything from leak detection and water heater replacement to full system repipes and emergency plumbing. With a commitment to quality, integrity, and customer satisfaction, Kings Plumbing is where quality meets character, every job, every time.

"Gilbert took care of resetting our Rheem tankless water heater. Was professional and efficient about it and quite kind explaining what went wrong with it. Sam, in the office, was also fantastic in regards to scheduling and invoicing, addressing all requests promptly, customer service first in mind."

Bianca M on May 2025

At Kings Plumbing, we deliver plumbing services fit for royalty across Boerne, San Antonio, and the Texas Hill Country. Locally owned and operated, we are proud to offer expert craftsmanship, honest pricing, and reliable service you can trust. From minor repairs to major installations, our licensed professionals treat your home with respect, working quickly and cleanly to get the job done right the first time. We specialize in everything from leak detection and water heater replacement to full system repipes and emergency plumbing. With a commitment to quality, integrity, and customer satisfaction, Kings Plumbing is where quality meets character, every job, every time.

"Gilbert took care of resetting our Rheem tankless water heater. Was professional and efficient about it and quite kind explaining what went wrong with it. Sam, in the office, was also fantastic in regards to scheduling and invoicing, addressing all requests promptly, customer service first in mind."

Bianca M on May 2025


Avatar for Caliente Water, LLC
Caliente Water, LLC
141 Industrial Dr, Suite 204
4.88(
347
)
Approved Pro
Caliente Water, LLC
141 Industrial Dr, Suite 204
4.88(
347
)
Approved Pro
Customers say: Quick response
Recommended by 99% of Angi customers
Recommended by 99% of HomeAdvisor customers
30 local quotes requested

Our company welcomes you to experience a tradition of customer satisfaction that will exceed your greatest expectations. Our professionalism and quality craftsmanship will accurately reflect your tasks and lifestyle. We are known for our prompt service and superior attention to detail. You can count on us to get the job done right the first time. We will meet with you at your convenience and will not keep you waiting. Call us today for your free estimate. You’ll be pleased you did. Thank you

"Prompt and honest"

Stephen B on December 2024

Our company welcomes you to experience a tradition of customer satisfaction that will exceed your greatest expectations. Our professionalism and quality craftsmanship will accurately reflect your tasks and lifestyle. We are known for our prompt service and superior attention to detail. You can count on us to get the job done right the first time. We will meet with you at your convenience and will not keep you waiting. Call us today for your free estimate. You’ll be pleased you did. Thank you

"Prompt and honest"

Stephen B on December 2024

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FAQs for tankless water heater installation projects in San Antonio, TX

Yes, although they have a higher upfront cost compared to traditional units, tankless water heaters can be worth the investment for many homeowners. They heat water on demand, eliminating standby energy losses and leading to 24% to 34% greater energy efficiency for homes using up to 41 gallons of hot water daily. Tankless units last longer—around 20 years with proper maintenance—and require less space than traditional units. They also reduce the risk of leaks and water damage since there's no tank to corrode and fail.

Tankless water heaters, including gas-powered models, do require electricity to operate components like the ignition and control systems. This means they won't function during a power outage. If you live in an area prone to outages and want to ensure a continuous hot water supply, consider installing a battery backup system or generator to keep your tankless water heater running when the power goes out.

You should set your tankless water heater to 120 degrees Fahrenheit for optimal safety and efficiency, as recommended by the U.S. Consumer Product Safety Commission. Setting the temperature at 120 degrees prevents scalding accidents, particularly for children and the elderly, and reduces energy consumption. Temperatures above 140 degrees increase the risk of burns and promote mineral buildup, which can decrease the system's efficiency.

A 20-minute shower uses 50 to 60 gallons of water, assuming a flow rate of 2.5 to 3 gallons per minute. A typical whole-house tankless water heater can produce 4 to 8 gallons of hot water per minute, providing continuous hot water for long showers. By installing low-flow showerheads and reducing shower time, you decrease water consumption and energy costs, maximizing the efficiency of your tankless system.

With proper maintenance, a tankless water heater lasts around 20 years, significantly longer than conventional tank water heaters, which last between 8 and 12 years. Regular inspections and timely repairs can further extend its lifespan. To keep your tankless system operating efficiently, have it inspected or serviced annually and address any minor issues promptly by contacting a local tankless water heater repair service.

The San Antonio, TX homeowners’ guide to tankless water heater installations
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