Top-rated tankless water heater installers.

Get matched with top tankless water heater installers in your area

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.

Tankless water heater installers in Pasadena

Drain Care Pro Plumbing
2403 El Molino Ave
5.00(
2
)
Approved Pro
Drain Care Pro Plumbing
2403 El Molino Ave
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
35 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"He is professional, fast, and i never have to call him back to repair anything."

Renee . on April 2021

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"He is professional, fast, and i never have to call him back to repair anything."

Renee . on April 2021


Jaxael S Rizo
PO Box 823202
4.95(
11
)
Approved Pro
Jaxael S Rizo
PO Box 823202
4.95(
11
)
Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
2 years of experience

Residential & Commercial Plumbing Licensed, bonded & insured 10+ years of experience Why should you choose to work with us? - Client-first philosophy: Placing client needs above all else, fostering lasting relationships. - Transparent expertise: Educating clients while delivering honest, exceptional work with quality materials. - Integrity-driven excellence: Delivering exceptional results with honesty and quality craftsmanship. I look forward to teaming up and delivering an exceptional service and effortless experience for you. Have questions? Need advice? Feel free to contact us for expert support. Call (818)399-5973 | Email Emergencyplumbingresource@gmail.com View our work on Instagram @emergencyplumbingresource

"Very happy with the promptness and job completion. I have already recommended to others and the experience has been the same, A+."

Jordan J on December 2024

Residential & Commercial Plumbing Licensed, bonded & insured 10+ years of experience Why should you choose to work with us? - Client-first philosophy: Placing client needs above all else, fostering lasting relationships. - Transparent expertise: Educating clients while delivering honest, exceptional work with quality materials. - Integrity-driven excellence: Delivering exceptional results with honesty and quality craftsmanship. I look forward to teaming up and delivering an exceptional service and effortless experience for you. Have questions? Need advice? Feel free to contact us for expert support. Call (818)399-5973 | Email Emergencyplumbingresource@gmail.com View our work on Instagram @emergencyplumbingresource

"Very happy with the promptness and job completion. I have already recommended to others and the experience has been the same, A+."

Jordan J on December 2024


Avatar for Bonafide Plumbing Services
Bonafide Plumbing Services
6317 Bright Ave.
5.00(
2
)
Approved Pro
Bonafide Plumbing Services
6317 Bright Ave.
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
6 years of experience

Bonafide Plumbing Services is a locally owned and operated business located in Whittier, CA. We are a full service plumbing company for both Residential & Commercial. Our services include: abs drain repiping, copper or pex repiping, drain repair, plumbing repair, sewer repair, water heaters and much more!

"Pleasant experience, very professional, a great price because I have worked with other companies before."

Chris M on June 2021

Bonafide Plumbing Services is a locally owned and operated business located in Whittier, CA. We are a full service plumbing company for both Residential & Commercial. Our services include: abs drain repiping, copper or pex repiping, drain repair, plumbing repair, sewer repair, water heaters and much more!

"Pleasant experience, very professional, a great price because I have worked with other companies before."

Chris M on June 2021


Avatar for Homebreeze Contracting, Inc.
Homebreeze Contracting, Inc.
2261 Market St, Unit 4820
5.00(
1
)
Approved Pro
Homebreeze Contracting, Inc.
2261 Market St, Unit 4820
5.00(
1
)
Approved Pro
7 years of experience
Free onsite estimate

HomeBreeze is Southern California's #1 water heater specialist. We offer upfront, transparent prices & remote quotes so that you don't have to wait for an on-site visit to get a scope and price. No surprises once the plumber arrives -- just honest service with low prices. See our reviews to see how much our customers love our service.

HomeBreeze is Southern California's #1 water heater specialist. We offer upfront, transparent prices & remote quotes so that you don't have to wait for an on-site visit to get a scope and price. No surprises once the plumber arrives -- just honest service with low prices. See our reviews to see how much our customers love our service.


Avatar for Drain City Plumbing, Inc.
Drain City Plumbing, Inc.
23238 Normandie Ave
4.61(
266
)
Approved Pro
Drain City Plumbing, Inc.
23238 Normandie Ave
4.61(
266
)
Approved Pro
Customers say: True professional
127 local quotes requested
10 years of experience

Here at Drain City Plumbing, Inc., we are known for our attention to detail and quality work. We are always sure to get the job done right the first time and always put the customer first. You won't regret working with us! ..........................................................................................................................................................................................................................................................................................FAVOR DE NO APLICAR PARA TRABAJO ! Aquí en Drain City Plumbing, Inc., somos conocidos por nuestra atención al detalle y el trabajo de calidad. Siempre estamos seguros de hacer el trabajo bien la primera vez y siempre ponemos al cliente primero.

"Consumer opted to not leave feedback"

Karen E on April 2025

Here at Drain City Plumbing, Inc., we are known for our attention to detail and quality work. We are always sure to get the job done right the first time and always put the customer first. You won't regret working with us! ..........................................................................................................................................................................................................................................................................................FAVOR DE NO APLICAR PARA TRABAJO ! Aquí en Drain City Plumbing, Inc., somos conocidos por nuestra atención al detalle y el trabajo de calidad. Siempre estamos seguros de hacer el trabajo bien la primera vez y siempre ponemos al cliente primero.

"Consumer opted to not leave feedback"

Karen E on April 2025


Avatar for First Thought Plumbing
First Thought Plumbing
5463 Beck Avenue
5.00(
10
)
Approved Pro
First Thought Plumbing
5463 Beck Avenue
5.00(
10
)
Approved Pro
Customers say: Quick response
25 local quotes requested
23 years of experience

First Thought Plumbing is a family-owned and operated company serving Los Angeles County. We pride ourselves on high quality work and lasting relationships with our customers. With our experience and knowledge, our plumbers are capable of handling anything from complicated leaks and simple plumbing repairs to kitchen or bathroom remodels. No job is too big or too small. We focus on providing superior customer service from the beginning of the project to the end. Our customers are always our First Thought!

"Replaced a 40 gallon water heater within a couple hours after I contacted them. Super efficient, super personable, exceptionally capable and totally affordable. I will recommend First Thought Plumbing any chance I get. Picture is the failed water heater…"

Scott N on May 2025

First Thought Plumbing is a family-owned and operated company serving Los Angeles County. We pride ourselves on high quality work and lasting relationships with our customers. With our experience and knowledge, our plumbers are capable of handling anything from complicated leaks and simple plumbing repairs to kitchen or bathroom remodels. No job is too big or too small. We focus on providing superior customer service from the beginning of the project to the end. Our customers are always our First Thought!

"Replaced a 40 gallon water heater within a couple hours after I contacted them. Super efficient, super personable, exceptionally capable and totally affordable. I will recommend First Thought Plumbing any chance I get. Picture is the failed water heater…"

Scott N on May 2025


Avatar for Redhead Rooter, Inc.
Redhead Rooter, Inc.
517 N Mountain Ave
4.74(
31
)
Approved Pro
Redhead Rooter, Inc.
517 N Mountain Ave
4.74(
31
)
Approved Pro
Customers say: True professional
282 local quotes requested
14 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all the work we perform. We are experts and will always keep you educated about the work process. We look forward to earning your business.

"Giovanni was prompt, courteous, and professional. He fixed the problem quickly."

Cliff C on May 2025

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all the work we perform. We are experts and will always keep you educated about the work process. We look forward to earning your business.

"Giovanni was prompt, courteous, and professional. He fixed the problem quickly."

Cliff C on May 2025


Avatar for California Drains Incorporated
California Drains Incorporated
1424 7th Street
5.00(
6
)
Approved Pro
California Drains Incorporated
1424 7th Street
5.00(
6
)
Approved Pro
Customers say: Quick response
136 local quotes requested
11 years of experience

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

"This company is the best. They were upfront on the cost of the repairs and did a fantastic job. They will aways be our first choice for any future plumbing projects. Thank you, California Drains!"

Nikolai W on February 2025

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

"This company is the best. They were upfront on the cost of the repairs and did a fantastic job. They will aways be our first choice for any future plumbing projects. Thank you, California Drains!"

Nikolai W on February 2025


Rooter Squad Plumbing
1218 S Glendale Ave, Ste 34
5.00(
2
)
Approved Pro
Rooter Squad Plumbing
1218 S Glendale Ave, Ste 34
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
13 years of experience

At Rooter Squad Plumbing we pride ourselves on being the best plumbing company in the area. We've built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started! Emergency Service Calls Available!!

"Sam is very expedient, diligent and honest. I highly recommend him."

amy h on November 2012

At Rooter Squad Plumbing we pride ourselves on being the best plumbing company in the area. We've built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started! Emergency Service Calls Available!!

"Sam is very expedient, diligent and honest. I highly recommend him."

amy h on November 2012


Avatar for Michael Howard Plumbing-Rooter-Heating-Air Conditioning
Michael Howard Plumbing-Rooter-Heating-Air Conditioning
11121 Queensland Street, Unit C-23
4.75(
50
)
Approved Pro
Michael Howard Plumbing-Rooter-Heating-Air Conditioning
11121 Queensland Street, Unit C-23
4.75(
50
)
Approved Pro
Customers say: True professional
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
26 years of experience

Michael Howard Plumbing-Rooter-Heating-Air Conditioning has been installing and repairing plumbing, heating, and air conditioning systems for 25 years. If you want a reliable and honest service company, give us a call at (310) 413-3973

"Fast, easy & reliable!"

Chuckq F on April 2024

Michael Howard Plumbing-Rooter-Heating-Air Conditioning has been installing and repairing plumbing, heating, and air conditioning systems for 25 years. If you want a reliable and honest service company, give us a call at (310) 413-3973

"Fast, easy & reliable!"

Chuckq F on April 2024

...
Showing 1-10 of 927

Tankless water heater installations FAQs

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 homeowners guide to tankless water heater installations
From average costs to expert advice, get all the answers you need to get your job done.
Toilet and bidet in bathroom
Apr 28, 2025
Apr 28, 2025
Use this guide to budget for bidet installation costs based on factors such as bidet type, attachments, features, parts, labor, and more.
water main being installed in yard
Apr 30, 2025
Apr 30, 2025
Budget for main water line replacement costs based on factors such as accessibility, depth, length, materials, permits, labor, and more.
Beautiful large white bathroom
Apr 30, 2025
Apr 30, 2025
Budget for walk-in bathtub costs based on factors such as bathtub type, labor, plumbing and electrical work, additional accessibility features, and more.
marble kitchen counter with gold faucet
Apr 28, 2025
Apr 28, 2025
Explore the average cost to replace a kitchen faucet with a professional plumber based on factors like faucet type, features, labor, and unexpected costs.
plumber installing sewer main pipes in the ground
Apr 25, 2025
Apr 25, 2025
Understand what goes into installing a sewer line, including materials, labor, permits, and potential landscaping considerations, to ensure a smooth and compliant connection to your local sewer system.
water main being repaired by plumbers
Apr 24, 2025
Apr 24, 2025
Main water line leak repair costs depend on how much of the line needs repair and other factors. Learn what influences the price before you take on this project.
Share project details to get started.