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Tankless water heater installers in Flowery Branch

Avatar for O'Callaghan Plumbing
O'Callaghan Plumbing
P.O. Box 2783
5.00(
5
)
Approved Pro
O'Callaghan Plumbing
P.O. Box 2783
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
12 years of experience

O'Callaghan Plumbing Inc. 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.

"Very Professional and kept a clean job site. Very reasonable price, on time & responsive! Will definitely use them again!!"

Michael S on August 2023

O'Callaghan Plumbing Inc. 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.

"Very Professional and kept a clean job site. Very reasonable price, on time & responsive! Will definitely use them again!!"

Michael S on August 2023


Plumb Medic, LLC
5227 Silver Springs Drive
New on HomeAdvisorNew on Angi
Approved Pro
Plumb Medic, LLC
5227 Silver Springs Drive
New on AngiNew on HomeAdvisor
Approved Pro
9 years of experience
Free onsite estimate

We are full service residential plumbing company who takes 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.

We are full service residential plumbing company who takes 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.


Avatar for Rooter Pro Xpress / Guice Services, Inc.
Rooter Pro Xpress / Guice Services, Inc.
6000 Unity Drive, Suite F
4.82(
4,913
)
Approved Pro
Rooter Pro Xpress / Guice Services, Inc.
6000 Unity Drive, Suite F
4.82(
4,913
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
1777 local quotes requested

Welcome to Guice Services, Inc.! We have a single mission, which is to achieve complete customer satisfaction. We work with the highest quality materials and experienced professionals. With over 40 years of experience, we have built our fculture around consistently focusing on the needs of our customers, providing personalized attention, and a stress free experience, which sets us apart from our competition and keeps our customers coming back.

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Shabana P on April 2025

Welcome to Guice Services, Inc.! We have a single mission, which is to achieve complete customer satisfaction. We work with the highest quality materials and experienced professionals. With over 40 years of experience, we have built our fculture around consistently focusing on the needs of our customers, providing personalized attention, and a stress free experience, which sets us apart from our competition and keeps our customers coming back.

"0"

Shabana P on April 2025


Avatar for Grey Plumbing, LLC
Grey Plumbing, LLC
346 Fairfield Drive
5.00(
21
)
Approved Pro
Grey Plumbing, LLC
346 Fairfield Drive
5.00(
21
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
4 years of experience

I’ve been a plumber for about 9 years and I love what I do! My company is all about the American way, providing the best goods and services at the best prices possible. We appreciate your business:)

"This company exceeds my expectations. Austin is knowledgeable and strives to meet all your needs. I hired him to replace a hot water heater, but he ended up finishing other plumbing projects that my renovation contractor failed out. Justin also came to assist and was great. This is my forever go to Plumbing Company."

Julie J on January 2025

I’ve been a plumber for about 9 years and I love what I do! My company is all about the American way, providing the best goods and services at the best prices possible. We appreciate your business:)

"This company exceeds my expectations. Austin is knowledgeable and strives to meet all your needs. I hired him to replace a hot water heater, but he ended up finishing other plumbing projects that my renovation contractor failed out. Justin also came to assist and was great. This is my forever go to Plumbing Company."

Julie J on January 2025


Avatar for Grissoms Pro Services
Grissoms Pro Services
4190 Simpson Road
4.63(
8
)
Approved Pro
Grissoms Pro Services
4190 Simpson Road
4.63(
8
)
Approved Pro
Customers say: Quick response
18 local quotes requested
3 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 the start to the 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.

"Prompt & Punctual; Polite & Professional. Dan and Owen were Extremely good at what they did and were a dream to work with. Even though they had to go get additional equipment, they had things done, same day. Cleaned up after themselves. and explained what the root problem was and how they were going to fix it. Also made suggestions about some down-the-road work that would need to be done in the future. God bless 'em!!!"

Dan C on January 2023

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 the start to the 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.

"Prompt & Punctual; Polite & Professional. Dan and Owen were Extremely good at what they did and were a dream to work with. Even though they had to go get additional equipment, they had things done, same day. Cleaned up after themselves. and explained what the root problem was and how they were going to fix it. Also made suggestions about some down-the-road work that would need to be done in the future. God bless 'em!!!"

Dan C on January 2023


Avatar for Wet Works Mechanical, LLC
Wet Works Mechanical, LLC
590 Lilburn School Road Northwest
5.00(
3
)
Approved Pro
Wet Works Mechanical, LLC
590 Lilburn School Road Northwest
5.00(
3
)
Approved Pro
Customers say: Quick response
11 local quotes requested
3 years of experience

With several years experience, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. Call today 470-429-7179 EVENING AND WEEKEND EMERGENCY SERVICES AVAILABLE $400.00 minimum charge on all Jobs

"They were super nice to work with, knowledgeable and completed the work quickly."

Linda P on April 2025

With several years experience, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. Call today 470-429-7179 EVENING AND WEEKEND EMERGENCY SERVICES AVAILABLE $400.00 minimum charge on all Jobs

"They were super nice to work with, knowledgeable and completed the work quickly."

Linda P on April 2025


Avatar for Garner Plumbing, Inc.
Garner Plumbing, Inc.
5450 Technology Parkway Suite 400
4.52(
263
)
Approved Pro
Garner Plumbing, Inc.
5450 Technology Parkway Suite 400
4.52(
263
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
23 local quotes requested

Garner Plumbing, Inc., is a family owned and operated business, offering plumbing services for both commercial and residential applications. We specialize in resolving all types of plumbing problems. We can handle new installation, as well as, service for existing plumbing. We carry and install many major brands of electric, gas and tankless water heaters. Our service area includes Hall, Jackson, Barrow and Forsyth Counties. We are licensed, bonded and insured. Also, we offer 24 hour emergency services. We are extremely passionate about the work that we do and you can trust us to provide a high quality service at a fair and honest price. If you are looking for a plumber you can depend on, please call Garner Plumbing today!

"I can't thank the guys enough for coming to the rescue. I started a toilet repair that should have been fairly easy, however….. So after realizing the job was too big for me I turned to Angi's list and they connected me to Garner Plumbing. They showed up that afternoon and had the job fixed within a half an hour or just a little more. I feel very confident in the work they did and they were very nice to work with. Would definitely recommend them to anyone needing plumbing service and the Jefferson, Athens, Winder area ."

Becki B on May 2024

Garner Plumbing, Inc., is a family owned and operated business, offering plumbing services for both commercial and residential applications. We specialize in resolving all types of plumbing problems. We can handle new installation, as well as, service for existing plumbing. We carry and install many major brands of electric, gas and tankless water heaters. Our service area includes Hall, Jackson, Barrow and Forsyth Counties. We are licensed, bonded and insured. Also, we offer 24 hour emergency services. We are extremely passionate about the work that we do and you can trust us to provide a high quality service at a fair and honest price. If you are looking for a plumber you can depend on, please call Garner Plumbing today!

"I can't thank the guys enough for coming to the rescue. I started a toilet repair that should have been fairly easy, however….. So after realizing the job was too big for me I turned to Angi's list and they connected me to Garner Plumbing. They showed up that afternoon and had the job fixed within a half an hour or just a little more. I feel very confident in the work they did and they were very nice to work with. Would definitely recommend them to anyone needing plumbing service and the Jefferson, Athens, Winder area ."

Becki B on May 2024


Avatar for Keep Smiling Plumbing & Electric
Keep Smiling Plumbing & Electric
3705 Harrison Rd SW
4.68(
130
)
Approved Pro
Keep Smiling Plumbing & Electric
3705 Harrison Rd SW
4.68(
130
)
Approved Pro
Customers say: True professional
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
3306 local quotes requested

Keep Smiling Plumbing Electric Heating and Cooling is a family-owned, family-operated, full-service plumbing electric and HVAC business, serving Gwinnett County, Georgia. We are Master Plumbers and members of the Plumbing & Mechanical Association of Georgia. Keep Smiling Plumbing & Electric is there when you need us, ready to take care of any problem that you may have with your plumbing or electrical systems. We also have available a full line of quality replacement products if you want to upgrade or update.

"Joshua, did a great job, and he was on time. he was professional. I do have a complaint. Joshua, had to cut a hole in the wall. I asked him if he was going to repair it and he stated they do not do patch work. If that is the case, they should hire a patch guy, that can repair and paint. Now I need to pay some one else, after paying 2,719.51 for 4 light install in the celling."

Martha Dora W on July 2024

Keep Smiling Plumbing Electric Heating and Cooling is a family-owned, family-operated, full-service plumbing electric and HVAC business, serving Gwinnett County, Georgia. We are Master Plumbers and members of the Plumbing & Mechanical Association of Georgia. Keep Smiling Plumbing & Electric is there when you need us, ready to take care of any problem that you may have with your plumbing or electrical systems. We also have available a full line of quality replacement products if you want to upgrade or update.

"Joshua, did a great job, and he was on time. he was professional. I do have a complaint. Joshua, had to cut a hole in the wall. I asked him if he was going to repair it and he stated they do not do patch work. If that is the case, they should hire a patch guy, that can repair and paint. Now I need to pay some one else, after paying 2,719.51 for 4 light install in the celling."

Martha Dora W on July 2024


Avatar for Roto-Rooter Plumbing & Water Cleanup
Roto-Rooter Plumbing & Water Cleanup
6025 Northbelt Pkwy NW B
4.26(
172
)
Approved Pro
Roto-Rooter Plumbing & Water Cleanup
6025 Northbelt Pkwy NW B
4.26(
172
)
Approved Pro
Customers say: Quick response
3937 local quotes requested
88 years of experience

Roto-Rooter is America's Largest Plumbing and Drain Cleanng Company. We offer 24 hour services with no overtime or after hour charges. We also offer convenient finance options

"BUYER BEWARE! Had a pipe leak within my wall. Caught it fairly early with minimum damage. The Roto Rooter rep Brian came out and inspected and said I needed water mitigation based off the moisture in my walls. When I say the leak wasn't that bad, it really wasn't! He stated that my insurance company would cover it all and that he deals with my particular company all the time and not to worry. I obviously was taken back by the cost of almost 4k! Fast forward, my insurance company are questioning duplicate charges and Roto-Rooter is saying I owe almost 3k or a lien will be placed on my property! This whole water mitigation is a scam and the salesman did not tell the truth. They should have picked up their fans a lot earlier than they did. I'm sure they were trying to milk all the money they could. Over 5k for a bunch of fans in my home. I WILL NEVER REFER ANYONE TO THIS PLACE! Contacting my lawyer and will have my day in court if necessary. BUNCH OF SCAM ARTISTS IF YOU ASK ME!"

Deanna M on February 2022

Roto-Rooter is America's Largest Plumbing and Drain Cleanng Company. We offer 24 hour services with no overtime or after hour charges. We also offer convenient finance options

"BUYER BEWARE! Had a pipe leak within my wall. Caught it fairly early with minimum damage. The Roto Rooter rep Brian came out and inspected and said I needed water mitigation based off the moisture in my walls. When I say the leak wasn't that bad, it really wasn't! He stated that my insurance company would cover it all and that he deals with my particular company all the time and not to worry. I obviously was taken back by the cost of almost 4k! Fast forward, my insurance company are questioning duplicate charges and Roto-Rooter is saying I owe almost 3k or a lien will be placed on my property! This whole water mitigation is a scam and the salesman did not tell the truth. They should have picked up their fans a lot earlier than they did. I'm sure they were trying to milk all the money they could. Over 5k for a bunch of fans in my home. I WILL NEVER REFER ANYONE TO THIS PLACE! Contacting my lawyer and will have my day in court if necessary. BUNCH OF SCAM ARTISTS IF YOU ASK ME!"

Deanna M on February 2022


Avatar for Greenlee Plumbing Inc
Greenlee Plumbing Inc
5086 Marsh Creek CT
4.87(
224
)
Approved Pro
Greenlee Plumbing Inc
5086 Marsh Creek CT
4.87(
224
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
1221 local quotes requested

Locally owned & operated. 100% satisfaction is the one thing we strive for. Our technicians have over 10 years of experience in the field and are ready to serve you. Our techs are equipped with the latest and most up to date tools in the industry to make sure we do the job right on the first attempt. Call us at 678-386-7513 address - 4336 East Hall rd Gainesville, ga 30507

"We were very satisfied with the service and appreciate their investigation into our issue."

Jesse D on April 2025

Locally owned & operated. 100% satisfaction is the one thing we strive for. Our technicians have over 10 years of experience in the field and are ready to serve you. Our techs are equipped with the latest and most up to date tools in the industry to make sure we do the job right on the first attempt. Call us at 678-386-7513 address - 4336 East Hall rd Gainesville, ga 30507

"We were very satisfied with the service and appreciate their investigation into our issue."

Jesse D on April 2025

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Showing 1-10 of 963

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.
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