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 Mechanicsville

Avatar for Atlantic Blue Water Services
Atlantic Blue Water Services
844 Ritchie Hwy Suite 103
4.88(
4
)
Approved Pro
Atlantic Blue Water Services
844 Ritchie Hwy Suite 103
4.88(
4
)
Approved Pro
Customers say: Quick response
106 local quotes requested
4 years of experience

Averaging a 4.8-star rating across all review platforms, client satisfaction is our #1 priority! Atlantic Blue Water Services provides the highest quality and most specialized home water treatment systems in today's market. We are 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. Don't settle for anything less than the best for your home or business. Experience the difference with Atlantic Blue Water Services. Contact us now for a free, no-obligation water test and discover why we are the preferred choice for clean water solutions in Maryland. Our experienced team is ready to answer your questions and guide you toward the best water solution for your home or business. We invite you to trust us with your water needs! Water Testing - Water Treatment - Water Softening - Well Water - City Water - Well Pumps - Tanks

"Very punctual and upfront - came and left was very pleased"

Sean G on November 2024

Averaging a 4.8-star rating across all review platforms, client satisfaction is our #1 priority! Atlantic Blue Water Services provides the highest quality and most specialized home water treatment systems in today's market. We are 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. Don't settle for anything less than the best for your home or business. Experience the difference with Atlantic Blue Water Services. Contact us now for a free, no-obligation water test and discover why we are the preferred choice for clean water solutions in Maryland. Our experienced team is ready to answer your questions and guide you toward the best water solution for your home or business. We invite you to trust us with your water needs! Water Testing - Water Treatment - Water Softening - Well Water - City Water - Well Pumps - Tanks

"Very punctual and upfront - came and left was very pleased"

Sean G on November 2024


J HOSS PLUMBING LLC
1805 Parran Rd
5.00(
8
)
Approved Pro
J HOSS PLUMBING LLC
1805 Parran Rd
5.00(
8
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
4 years of experience

We are 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.

"We actually hired J Hoss for two jobs, and they did a great job with both! Both were tricky operations involving the plumbing of an old beach house, and they came up with effective ways of dealing with every issue. The hot water heater install involved moving an old hot water heater out of a crawlspace and putting a new one in in a closet, and the plumbing lines were a bit wacky due to the way the cottage had been added onto over time. But they solved the problems without tearing out any walls, which was great. The other job involved a DIY project installing a bathroom vanity that we got halfway through before realizing we were over our heads. They were game and jumped right in and worked with us to complete the job. We loved how they collaborated with us and were so cheerful about our amateur efforts! Definitely will hire again."

Michele C on December 2024

We are 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.

"We actually hired J Hoss for two jobs, and they did a great job with both! Both were tricky operations involving the plumbing of an old beach house, and they came up with effective ways of dealing with every issue. The hot water heater install involved moving an old hot water heater out of a crawlspace and putting a new one in in a closet, and the plumbing lines were a bit wacky due to the way the cottage had been added onto over time. But they solved the problems without tearing out any walls, which was great. The other job involved a DIY project installing a bathroom vanity that we got halfway through before realizing we were over our heads. They were game and jumped right in and worked with us to complete the job. We loved how they collaborated with us and were so cheerful about our amateur efforts! Definitely will hire again."

Michele C on December 2024


Avatar for Long Home Products
Long Home Products
8530 Corridor Rd
3.52(
377
)
Approved Pro
Long Home Products
8530 Corridor Rd
3.52(
377
)
Approved Pro
Customers say: Quality work
5441 local quotes requested
80 years of experience

With over 70 years of experience in home improvement, Long Home Products is the industry-leading company you can trust to give you peace of mind. We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We are experts in all aspects of roofing, bathroom, window and door projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

"STAY AWAY!!!! This Company cancelled the initial estimate on me 3 times making me drive 90 minutes to the property each time. They finally showed and gave me the typical hard sell "if you sign the contract today..." They gave us a quote so far over market value we should have walked away. But we agreed because of the "70 year history in the industry" We thought we were buying a service from a company with integrity. They took an immediate $18K deposit on a $55K project. I know, shame on me for agreeing to such an amount. We knew we were over spending, but... One month later, they simply cancelled the contract without explanation and without any work on the project. This contract was binding on us but, in their words, was not binding on them because "there's a clause in the fine print that allows them to cancel" THEY STILL HAVE OUR MONEY and I STILL NEED A ROOF Stay away from this company. No integrity No responsibility Unreliable Over priced Will take your money and keep it"

Michael H on August 2024

With over 70 years of experience in home improvement, Long Home Products is the industry-leading company you can trust to give you peace of mind. We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We are experts in all aspects of roofing, bathroom, window and door projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

"STAY AWAY!!!! This Company cancelled the initial estimate on me 3 times making me drive 90 minutes to the property each time. They finally showed and gave me the typical hard sell "if you sign the contract today..." They gave us a quote so far over market value we should have walked away. But we agreed because of the "70 year history in the industry" We thought we were buying a service from a company with integrity. They took an immediate $18K deposit on a $55K project. I know, shame on me for agreeing to such an amount. We knew we were over spending, but... One month later, they simply cancelled the contract without explanation and without any work on the project. This contract was binding on us but, in their words, was not binding on them because "there's a clause in the fine print that allows them to cancel" THEY STILL HAVE OUR MONEY and I STILL NEED A ROOF Stay away from this company. No integrity No responsibility Unreliable Over priced Will take your money and keep it"

Michael H on August 2024


Avatar for John Krause Construction
John Krause Construction
11519 HG Truman Rd
4.50(
146
)
Approved Pro
John Krause Construction
11519 HG Truman Rd
4.50(
146
)
Approved Pro
Customers say: Quality work
2509 local quotes requested
27 years of experience

John Krause Construction, Inc. is an unparalleled team of professionals dedicated to the mission of custom home design and building. Together the John Krause team creates a superlative custom home building and home improvement experience tailored to the needs, wants and dreams of each client. We are passionate about our client relationships and this is reflected in all that we do. From the in-house design process, interior and exterior customization and artisanal craftsmanship to the professional management and accurate fixed pricing, our aim is your total satisfaction with your new home, architectural restoration or home remodeling project. 

"I am writing to formally express my deep dissatisfaction with the recent retaining wall replacement project completed by John Krause Construction (JKC) at my property. After reading positive reviews and receiving an estimate that, although over my budget, seemed reasonable for the work involved, I made the decision to hire JKC. Unfortunately, this has proven to be a significant mistake, and I am left extremely disappointed with both the quality of work and the overall experience. Here are the main issues I encountered: 1. Unprofessional Behavior: The crew exhibited unacceptable behavior while working on my property. Not only did I witness them disposing of bodily fluids on-site, but they were also disrespectful and dismissive. when I raised concerns no response was received. I now smell urine when entering and exiting my garage. 2. Unresponsive Ownership: I have attempted to reach out to the owner multiple times to address these concerns and resolve the issues, but my messages have been met with silence. This lack of communication is incredibly frustrating and has only added to my disappointment. The owner refused to speak on the phone since the owner was made aware of the call being recorded. 3. Property Damage: During the construction process, my property was left damaged in multiple areas. This included e.g., landscaping destruction, equipment damage. Personal crew members vehicles being driven through my yard leaving deep tire marks damage. 4. Subpar Quality of Work: Despite the high cost of the project, the final result does not meet the standards outlined in the estimate or contract. No proper grading was completed. Every time it rains pools of water sits in front and behind the wall. The response received was. “we have passed all inspections.  There will be some water pooling while it is settling still. Plus the fact of the hard rain today, it will happen.” The wall has been completed for 2 months. Given the extensive problems, stress and anxiety I have faced. I do not recommend John Krause Construction."

B F on April 2025

John Krause Construction, Inc. is an unparalleled team of professionals dedicated to the mission of custom home design and building. Together the John Krause team creates a superlative custom home building and home improvement experience tailored to the needs, wants and dreams of each client. We are passionate about our client relationships and this is reflected in all that we do. From the in-house design process, interior and exterior customization and artisanal craftsmanship to the professional management and accurate fixed pricing, our aim is your total satisfaction with your new home, architectural restoration or home remodeling project. 

"I am writing to formally express my deep dissatisfaction with the recent retaining wall replacement project completed by John Krause Construction (JKC) at my property. After reading positive reviews and receiving an estimate that, although over my budget, seemed reasonable for the work involved, I made the decision to hire JKC. Unfortunately, this has proven to be a significant mistake, and I am left extremely disappointed with both the quality of work and the overall experience. Here are the main issues I encountered: 1. Unprofessional Behavior: The crew exhibited unacceptable behavior while working on my property. Not only did I witness them disposing of bodily fluids on-site, but they were also disrespectful and dismissive. when I raised concerns no response was received. I now smell urine when entering and exiting my garage. 2. Unresponsive Ownership: I have attempted to reach out to the owner multiple times to address these concerns and resolve the issues, but my messages have been met with silence. This lack of communication is incredibly frustrating and has only added to my disappointment. The owner refused to speak on the phone since the owner was made aware of the call being recorded. 3. Property Damage: During the construction process, my property was left damaged in multiple areas. This included e.g., landscaping destruction, equipment damage. Personal crew members vehicles being driven through my yard leaving deep tire marks damage. 4. Subpar Quality of Work: Despite the high cost of the project, the final result does not meet the standards outlined in the estimate or contract. No proper grading was completed. Every time it rains pools of water sits in front and behind the wall. The response received was. “we have passed all inspections.  There will be some water pooling while it is settling still. Plus the fact of the hard rain today, it will happen.” The wall has been completed for 2 months. Given the extensive problems, stress and anxiety I have faced. I do not recommend John Krause Construction."

B F on April 2025


Avatar for HPC Services
HPC Services
14 Iron Gate Drive
5.00(
14
)
Approved Pro
HPC Services
14 Iron Gate Drive
5.00(
14
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3127 local quotes requested

15% Military and Veterans discount! $50 Water Heater Tune Up! $50 AC Tune Up! HPC Services is a proud Service Disabled Veteran Owned Small Business brining a fresh take on HVAC and plumbing to Maryland. Our technicians are trained to service, repair, and maintain your systems. HPC Services offers HVAC servicing and repair, HVAC replacement, new HVAC installations, ductwork, duct and vent cleaning, plumbing services and pipe repairs, main drain line snaking, line snaking, drain cleaning, clog removal and more! Financing available!

"Brandon identified and isolated the water leak immediately. His expertise and speed were unmatched."

Ashley S on February 2025

15% Military and Veterans discount! $50 Water Heater Tune Up! $50 AC Tune Up! HPC Services is a proud Service Disabled Veteran Owned Small Business brining a fresh take on HVAC and plumbing to Maryland. Our technicians are trained to service, repair, and maintain your systems. HPC Services offers HVAC servicing and repair, HVAC replacement, new HVAC installations, ductwork, duct and vent cleaning, plumbing services and pipe repairs, main drain line snaking, line snaking, drain cleaning, clog removal and more! Financing available!

"Brandon identified and isolated the water leak immediately. His expertise and speed were unmatched."

Ashley S on February 2025


Avatar for American Eagle Building
American Eagle Building
6085 Long Beach Drive
5.00(
8
)
Approved Pro
American Eagle Building
6085 Long Beach Drive
5.00(
8
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
123 local quotes requested

American Eagle Building & Design LLC Southern Maryland's Premier Custom Homes Builders and Renovation Specialist since 2012. Specializing in: Custom Home Building Custom Home Renovations Additions Kitchens Baths We offer free design and consultation services. Our designers can quickly provide high quality floor plans, and 3D renderings of your project, at no extra cost.

"Exceptional Service & Quality Work! I recently hired American Eagle Building & Design, LLC to help rearrange a few areas in my day spa (Jacqueline Morgan Day Spa) and create two new treatment areas in Solomons Island, MD. From the very beginning, their communication was outstanding. They listened carefully to everything I asked for and remembered every detail throughout the project. Their attention to detail was truly impressive—every aspect of the job was done with precision and care. They stayed true to their original estimate, which was incredibly detailed and transparent, with no unexpected costs. The team was also very easy to talk to, making the entire process smooth and stress-free. What really stood out was their cleanliness and professionalism. At the end of each day, they left the space spotless, which was so important for my business. If you’re looking for a reliable, skilled, and professional construction team, I highly recommend American Eagle Building & Design, LLC. I couldn’t be happier with the results!"

Jacqueline M on February 2025

American Eagle Building & Design LLC Southern Maryland's Premier Custom Homes Builders and Renovation Specialist since 2012. Specializing in: Custom Home Building Custom Home Renovations Additions Kitchens Baths We offer free design and consultation services. Our designers can quickly provide high quality floor plans, and 3D renderings of your project, at no extra cost.

"Exceptional Service & Quality Work! I recently hired American Eagle Building & Design, LLC to help rearrange a few areas in my day spa (Jacqueline Morgan Day Spa) and create two new treatment areas in Solomons Island, MD. From the very beginning, their communication was outstanding. They listened carefully to everything I asked for and remembered every detail throughout the project. Their attention to detail was truly impressive—every aspect of the job was done with precision and care. They stayed true to their original estimate, which was incredibly detailed and transparent, with no unexpected costs. The team was also very easy to talk to, making the entire process smooth and stress-free. What really stood out was their cleanliness and professionalism. At the end of each day, they left the space spotless, which was so important for my business. If you’re looking for a reliable, skilled, and professional construction team, I highly recommend American Eagle Building & Design, LLC. I couldn’t be happier with the results!"

Jacqueline M on February 2025


Avatar for Roto-Rooter Plumbing & Water Cleanup
Roto-Rooter Plumbing & Water Cleanup
6500 Kane Way
4.24(
639
)
Approved Pro
Roto-Rooter Plumbing & Water Cleanup
6500 Kane Way
4.24(
639
)
Approved Pro
Customers say: Quick response
3996 local quotes requested
90 years of experience

When you need an emergency plumber or a drain cleaner, call Roto-Rooter Plumbing & Water Cleanup. Your fast & reliable plumber can fix any plumbing problem, including sump pumps, toilet repair, faucet repair, faucet replacement, garbage disposals, water heaters, bathtubs, showers, and outside faucets. Roto-Rooter is best known for drain cleaning & sewer cleaning. We fix drain clogs, clogged toilets or sinks, blockage of main sewer lines, slow draining shower and bathtub drains, sewer lines and leaking or burst pipes. We also specialize in water damage restoration & water cleanup services. We can fix and clean up your flooded basement too. Roto-Rooter is a 24-hour plumber near you and provides emergency service.

"They wanted $542 just to install a basic kitchen faucet! Ridiculous!"

Stephen T on November 2024

When you need an emergency plumber or a drain cleaner, call Roto-Rooter Plumbing & Water Cleanup. Your fast & reliable plumber can fix any plumbing problem, including sump pumps, toilet repair, faucet repair, faucet replacement, garbage disposals, water heaters, bathtubs, showers, and outside faucets. Roto-Rooter is best known for drain cleaning & sewer cleaning. We fix drain clogs, clogged toilets or sinks, blockage of main sewer lines, slow draining shower and bathtub drains, sewer lines and leaking or burst pipes. We also specialize in water damage restoration & water cleanup services. We can fix and clean up your flooded basement too. Roto-Rooter is a 24-hour plumber near you and provides emergency service.

"They wanted $542 just to install a basic kitchen faucet! Ridiculous!"

Stephen T on November 2024


Avatar for Bradford Renovations LLC
Bradford Renovations LLC
209 Bowie Trl
5.00(
10
)
Approved Pro
Bradford Renovations LLC
209 Bowie Trl
5.00(
10
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
382 local quotes requested

We specialize but are not limited to full bathroom and kitchen remodeling. We are an all in house company pricing ourselves on knocking out the middle men (subcontractors). We believe that the quality and customer service is better when the work it started and completed by the same crew through the entire project. We offer many other services including flooring, painting and more. All the way down to finishing basements. See what we can do for you.

"Converted a loft into a room. We went with Bradford Renovations and couldn't be happier with the results. In just two days, they completed the project. They did significant prep to keep drywall dust contained. Results turned out great."

Gary F on January 2025

We specialize but are not limited to full bathroom and kitchen remodeling. We are an all in house company pricing ourselves on knocking out the middle men (subcontractors). We believe that the quality and customer service is better when the work it started and completed by the same crew through the entire project. We offer many other services including flooring, painting and more. All the way down to finishing basements. See what we can do for you.

"Converted a loft into a room. We went with Bradford Renovations and couldn't be happier with the results. In just two days, they completed the project. They did significant prep to keep drywall dust contained. Results turned out great."

Gary F on January 2025


Avatar for Mac Appliance Repair Services
Mac Appliance Repair Services
4.86(
28
)
Approved Pro
Mac Appliance Repair Services
4.86(
28
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
226 local quotes requested

We have the experience and dedication to do your job right. LG AUTHORIZED service Call or click to schedule a estimate today!

"Excellent customer service from MAC Appliances. Technician was very knowledgable, identified the repair needed, had part on truck, and fixed my Samsung Sensor Dryer within 1 hr. Great company!!! I highly recommend them."

Rhonda S on November 2024

We have the experience and dedication to do your job right. LG AUTHORIZED service Call or click to schedule a estimate today!

"Excellent customer service from MAC Appliances. Technician was very knowledgable, identified the repair needed, had part on truck, and fixed my Samsung Sensor Dryer within 1 hr. Great company!!! I highly recommend them."

Rhonda S on November 2024


Avatar for Santana Construction Services, LLC
Santana Construction Services, LLC
3900 Jiggsy Ct.
5.00(
1
)
Approved Pro
Santana Construction Services, LLC
3900 Jiggsy Ct.
5.00(
1
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1720 local quotes requested

At Santana Construction Services LLC, we have over 10 years experience and 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.

"I had such a great team working on my home. Every project was completed exactly how I requested and done timely. The most important factor for me was how they cleaned up after themselves after every job. Also, the constant communication. The work is definitely quality. I did everything in phases just to get a feel of their work. I had electrical and painting done in my office and mudroom. I later decided to hire them to complete some electrical, painting, gym, and storage built out in my basement. I am saving up for the full bathroom I want done in my basement. Will definitely hire them again."

Tania B on January 2025

At Santana Construction Services LLC, we have over 10 years experience and 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.

"I had such a great team working on my home. Every project was completed exactly how I requested and done timely. The most important factor for me was how they cleaned up after themselves after every job. Also, the constant communication. The work is definitely quality. I did everything in phases just to get a feel of their work. I had electrical and painting done in my office and mudroom. I later decided to hire them to complete some electrical, painting, gym, and storage built out in my basement. I am saving up for the full bathroom I want done in my basement. Will definitely hire them again."

Tania B on January 2025

...
Showing 1-10 of 974

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.
Sump pump at home
Apr 24, 2025
Apr 24, 2025
Budget for sump pump replacement costs based on factors such as sump pump type, its location in your home, ongoing maintenance, labor, and more.
professional inspecting sewer with borescope camera
Apr 24, 2025
Apr 24, 2025
Budget for sewer line camera inspection costs based on factors such as sewer length, camera type, method, accessibility, repairs, labor, and more.
outdoor water lines with backflow preventer
Apr 21, 2025
Apr 21, 2025
Backflow preventer costs depend on type, size, location, and labor costs. This guide breaks down the cost factors to help you budget.
plumber cleaning a home sewer line in yard
Apr 22, 2025
Apr 22, 2025
Budget for main sewer line clog repair costs based on factors such as cleaning method, sewer age, project complexity, permits, labor, and more.
water faucet on exterior of brick house
Apr 22, 2025
Apr 22, 2025
Budget for the cost to replace a hose bib based on factors such as faucet type, location, plumbing line installation, permits, labor, and more.
A man installs a new shower
Apr 17, 2025
Apr 17, 2025
A shower remodel can completely transform your bathroom. Start budgeting for shower remodel costs and get ready for the shower of your dreams.
Share project details to get started.