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 Gaithersburg

Avatar for Pohlman Plumbing Inc
Pohlman Plumbing Inc
611 N Hammonds Ferry Rd STE P
4.63(
38
)
Approved Pro
Pohlman Plumbing Inc
611 N Hammonds Ferry Rd STE P
4.63(
38
)
Approved Pro
Customers say: Quick response
22 local quotes requested
17 years of experience

Pohlman Plumbing is a local, family-owned and -operated full-service plumbing and HVAC company serving the Baltimore metro area. Founded in 2008, our professional and friendly customer service plus our top-notch skills have made us one of the most trusted local plumbers in Baltimore. When you choose to work with Pohlman Plumbing, you can have peace of mind knowing we always stand by the Pohlman Promise: fast service, at a fair price, and done right the first time.

"The gentleman that work this business go above and beyond to make the best suggestions for they work required. This is the second time I have hired them. My sub pump went after and more rain was coming they came out with 2 hours to fix the problem. Extremely professional man. I will be er use any other plumbing business other than Pohlman. I highly recommend if you have a plumping issue."

Georgette T on January 2024

Pohlman Plumbing is a local, family-owned and -operated full-service plumbing and HVAC company serving the Baltimore metro area. Founded in 2008, our professional and friendly customer service plus our top-notch skills have made us one of the most trusted local plumbers in Baltimore. When you choose to work with Pohlman Plumbing, you can have peace of mind knowing we always stand by the Pohlman Promise: fast service, at a fair price, and done right the first time.

"The gentleman that work this business go above and beyond to make the best suggestions for they work required. This is the second time I have hired them. My sub pump went after and more rain was coming they came out with 2 hours to fix the problem. Extremely professional man. I will be er use any other plumbing business other than Pohlman. I highly recommend if you have a plumping issue."

Georgette T on January 2024


Benjamin Franklin Plumbing
2702 Back Acre Circle, Suite 120
4.39(
80
)
Approved Pro
Benjamin Franklin Plumbing
2702 Back Acre Circle, Suite 120
4.39(
80
)
Approved Pro
Customers say: Quick response
76 years of experience
Free onsite estimate

Benjamin Franklin Plumbing® of Mount Airy traces its roots as a company all the way back to 1949. We started offering plumbing services in 1991 and haven't looked back since! Our team is comprised of a selection of the most skilled plumbers in Mount Airy and serving the DC metro area who are constantly receiving industry-leading training to stay updated with the latest plumbing developments. We treat customers with respect, do the job right, and always clean up after ourselves. Our plumbing repair specialists proudly serve residents in Mount Airy, Frederick, Baltimore, Gaithersburg, Ellicott City, Columbia, Towson, Westminster, and all throughout the Washington DC area. Whether you need an emergency pipe repair or require routine maintenance, Benjamin Franklin Plumbing® of Mount Airy is ready to help!

"Great service!"

Edwin C on March 2017

Benjamin Franklin Plumbing® of Mount Airy traces its roots as a company all the way back to 1949. We started offering plumbing services in 1991 and haven't looked back since! Our team is comprised of a selection of the most skilled plumbers in Mount Airy and serving the DC metro area who are constantly receiving industry-leading training to stay updated with the latest plumbing developments. We treat customers with respect, do the job right, and always clean up after ourselves. Our plumbing repair specialists proudly serve residents in Mount Airy, Frederick, Baltimore, Gaithersburg, Ellicott City, Columbia, Towson, Westminster, and all throughout the Washington DC area. Whether you need an emergency pipe repair or require routine maintenance, Benjamin Franklin Plumbing® of Mount Airy is ready to help!

"Great service!"

Edwin C on March 2017


CLARK DRAIN CLEANING, LLC
2594 DRUID PARK DR
5.00(
2
)
Approved Pro
CLARK DRAIN CLEANING, LLC
2594 DRUID PARK DR
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

Clark Drain Cleaning proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!

"The plumbers were friendly, professional and on time. They performed the job in a timely fashion, cleaned up and were very thorough. I would highly recommend them to others."

Regina M on September 2023

Clark Drain Cleaning proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!

"The plumbers were friendly, professional and on time. They performed the job in a timely fashion, cleaned up and were very thorough. I would highly recommend them to others."

Regina M on September 2023


Avatar for Family Fire Service and Plumbing LLC
Family Fire Service and Plumbing LLC
5006 Aspen Hill Rd
4.43(
7
)
Approved Pro
Family Fire Service and Plumbing LLC
5006 Aspen Hill Rd
4.43(
7
)
Approved Pro
Customers say: Quick response
20 local quotes requested
2 years of experience

We are in the industry providing plumbing and fire protection systems to residents and businesses in and around Maryland for over 22 years. During all this time we were working to improve customer satisfaction before, during and after the service based on our agile management, trained team and quality materials. Now, years of experience in the market allows us to guarantee that our work will be of the highest quality.

"My water heater started leaking on a Sunday. I reached out to Family Fire Service and they responded immediately. They had a new water heater out to my house the next day and installed in a few hours. The supervisor and the tech worked seamlessly to have us up and running. They provided quality service and at a very competitive price. I highly recommend Family Fire Service and Plumbing. KC"

Khalid C on June 2025

We are in the industry providing plumbing and fire protection systems to residents and businesses in and around Maryland for over 22 years. During all this time we were working to improve customer satisfaction before, during and after the service based on our agile management, trained team and quality materials. Now, years of experience in the market allows us to guarantee that our work will be of the highest quality.

"My water heater started leaking on a Sunday. I reached out to Family Fire Service and they responded immediately. They had a new water heater out to my house the next day and installed in a few hours. The supervisor and the tech worked seamlessly to have us up and running. They provided quality service and at a very competitive price. I highly recommend Family Fire Service and Plumbing. KC"

Khalid C on June 2025


Markool Heating & Cooling, LLC
5304 Unit C Kings Court
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
Markool Heating & Cooling, LLC
5304 Unit C Kings Court
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
27 local quotes requested
6 years of experience

Welcome to Markool Heating & Cooling. We proudly provide the highest quality of service and craftsmanship for each aspect of your project. Our depth of knowledge and experience solidify our belief that customer service stands as the highest priority. We eagerly look forward to working with you and making your vision a reality. Give us a call, text, or email today, and let us get started!

Welcome to Markool Heating & Cooling. We proudly provide the highest quality of service and craftsmanship for each aspect of your project. Our depth of knowledge and experience solidify our belief that customer service stands as the highest priority. We eagerly look forward to working with you and making your vision a reality. Give us a call, text, or email today, and let us get started!


Avatar for Horizon Services, LLC (MD)
Horizon Services, LLC (MD)
2607 N Rolling Rd
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
Horizon Services, LLC (MD)
2607 N Rolling Rd
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
13 local quotes requested
36 years of experience

Horizon Services (MD), LLC, is the regions largest and most well respected plumbing, heating and air conditioning company, with nearly 600 employees serving tens of thousands of homeowners throughout Delaware, Southeastern Pennsylvania, Southern New Jersey and Northeastern Maryland. After a quarter of a century in business, Horizon Services (MD), LLC, remains fully committed to setting the industry standard for customer service, installation and focusing on things that are important to busy homeowners.

Horizon Services (MD), LLC, is the regions largest and most well respected plumbing, heating and air conditioning company, with nearly 600 employees serving tens of thousands of homeowners throughout Delaware, Southeastern Pennsylvania, Southern New Jersey and Northeastern Maryland. After a quarter of a century in business, Horizon Services (MD), LLC, remains fully committed to setting the industry standard for customer service, installation and focusing on things that are important to busy homeowners.


Avatar for Brian B Quick
Brian B Quick
10739 Tucker Street
5.00(
4
)
Approved Pro
Brian B Quick
10739 Tucker Street
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

Brian B Quick s a well established company in the Washington DC and Baltimore region. We offer over 100 years of experience total on our Team. Our business approach is to make clients lives better; one solution at a time. We have over 50 5 star reviews! Our focus is customer service as well as professionalism. We pride ourselves on integrity at all times. We are a 4th generation Master Plumbing company! No other company can make that claim in the DC Metro area! Call us for your next job; you will not be disappointed.

"fantastic ! did a great job polite"

Jim I on September 2022

Brian B Quick s a well established company in the Washington DC and Baltimore region. We offer over 100 years of experience total on our Team. Our business approach is to make clients lives better; one solution at a time. We have over 50 5 star reviews! Our focus is customer service as well as professionalism. We pride ourselves on integrity at all times. We are a 4th generation Master Plumbing company! No other company can make that claim in the DC Metro area! Call us for your next job; you will not be disappointed.

"fantastic ! did a great job polite"

Jim I on September 2022


Avatar for All In One General Contractor Inc
All In One General Contractor Inc
1738 Elton Road Suite 317
5.00(
2
)
Approved Pro
All In One General Contractor Inc
1738 Elton Road Suite 317
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

Our team consists of experienced and skilled professionals who are committed to delivering exceptional results on every project. We take pride in our work and strive to exceed our clients' expectations.

"ALL IN ONE GENERAL CONTRACTOR INC has completed several jobs for me. The owner is very professional, he explains the job in detail before work starts and always ensures that the work is professionally done. I've been very satisfied with the work they have performed and will be hiring for future jobs. I highly recommend ALL IN ONE GENERAL CONTRACTOR INC for your home improvement needs."

Patrice T on March 2025

Our team consists of experienced and skilled professionals who are committed to delivering exceptional results on every project. We take pride in our work and strive to exceed our clients' expectations.

"ALL IN ONE GENERAL CONTRACTOR INC has completed several jobs for me. The owner is very professional, he explains the job in detail before work starts and always ensures that the work is professionally done. I've been very satisfied with the work they have performed and will be hiring for future jobs. I highly recommend ALL IN ONE GENERAL CONTRACTOR INC for your home improvement needs."

Patrice T on March 2025


Avatar for Baldwin Remodeling LLC
Baldwin Remodeling LLC
2234 Hidden Retreat Trl
4.71(
21
)
Approved Pro
Baldwin Remodeling LLC
2234 Hidden Retreat Trl
4.71(
21
)
Approved Pro
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
189 local quotes requested

With 30 years expertise in Home Design & Remodeling, Baldwin Remodeling, LLC can provide everything from design through installation, including tile, plumbing, electrical, HVAC, etc. To best service you, we do NOT use subcontractors, Craig does the work! Your project stays in-house and is manage completely from start to finish. Get expert work, personalized service and customer satisfaction. We proudly serve Ann Arundel, Calvert and Charles Counties. For a FREE bathroom remodeling estimate, please contact us at 410-414-5244. If you can imagine it -- we can build it. See our project gallery at: http://baldwin-remodeling.com

"It was absolutely great! We remodeled 3 bathrooms. The work was professionally done. Our home was kept clean during the remodeling project. Carpet and floors were covered when necessary. They were consistent with arrival and departure times each day during the project. Very respectful. I enjoyed working with Baldwin Remodelling and plan to hire them again for an additional remodeling project in the near future."

Berdenia S on September 2019

With 30 years expertise in Home Design & Remodeling, Baldwin Remodeling, LLC can provide everything from design through installation, including tile, plumbing, electrical, HVAC, etc. To best service you, we do NOT use subcontractors, Craig does the work! Your project stays in-house and is manage completely from start to finish. Get expert work, personalized service and customer satisfaction. We proudly serve Ann Arundel, Calvert and Charles Counties. For a FREE bathroom remodeling estimate, please contact us at 410-414-5244. If you can imagine it -- we can build it. See our project gallery at: http://baldwin-remodeling.com

"It was absolutely great! We remodeled 3 bathrooms. The work was professionally done. Our home was kept clean during the remodeling project. Carpet and floors were covered when necessary. They were consistent with arrival and departure times each day during the project. Very respectful. I enjoyed working with Baldwin Remodelling and plan to hire them again for an additional remodeling project in the near future."

Berdenia S on September 2019


Avatar for DSA Remodeling
DSA Remodeling
5000 Sunnyside Ave
5.00(
3
)
Approved Pro
DSA Remodeling
5000 Sunnyside Ave
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1290 local quotes requested

DSA Remodeling is a commercial and Residential improvement & remodeling company which provides professional construction services for any type of improvement, addition, or renovation project. Our full service approach includes design services with home remodeling ideas that transform your dreams into working plans.

"Work went really well. They performed an exceptional work. Since the beginning of our business meets, they provided me with a clear ideas, proposal that would adjusted to my budget. Work was done in time, and all the staff members of the company were very responsible and respectful . I am very happy and satisfied with the outcome of the project. My kitchen looks great and is very functional. I will recommend the service of this company to my friends and family."

Zoila N on September 2024

DSA Remodeling is a commercial and Residential improvement & remodeling company which provides professional construction services for any type of improvement, addition, or renovation project. Our full service approach includes design services with home remodeling ideas that transform your dreams into working plans.

"Work went really well. They performed an exceptional work. Since the beginning of our business meets, they provided me with a clear ideas, proposal that would adjusted to my budget. Work was done in time, and all the staff members of the company were very responsible and respectful . I am very happy and satisfied with the outcome of the project. My kitchen looks great and is very functional. I will recommend the service of this company to my friends and family."

Zoila N on September 2024

...
Showing 1-10 of 843
The Gaithersburg, MD homeowners’ guide to tankless water heater installations
From average costs to expert advice, get all the answers you need to get your job done.
Ceramic sink and modern tap in stylish kitchen
Jul 9, 2025
Jul 9, 2025
Need to clean your drain? Here’s how much it costs, what factors affect cost, and what to expect.
Plumber repairing water heater in the bathroom
Jun 25, 2025
Jun 25, 2025
Budget for water heater flush costs based on factors such as water heater size and type, the plumber’s experience level, related services, and more.
trench being dug to repair sewer main in backyard
Jun 21, 2025
Jun 21, 2025
Use this guide to budget for sewer line replacement costs based on factors such as location, trenching, materials, repairs, landscaping, and more.
newly remodeled bathroom with new bath tub
Jun 21, 2025
Jun 21, 2025
Budget for bathtub replacement costs based on factors such as bathtub type, material, removal, hardware, labor, plumbing work, and more.
A woman fixing cistern in bathroom
Jun 21, 2025
Jun 21, 2025
Use this guide to budget for toilet repair costs based on factors such as problem type, replacement part prices, labor, and more.
A man installs a new shower
Jun 15, 2025
Jun 15, 2025
Looking to remodel your shower? Here’s how much it costs, what factors affect cost, and what to expect.
Share project details to get started.