Tankless Water Heaters · Clarksburg, MD

Tankless Water Heaters

Endless hot water.

A tankless water heater heats water the instant you need it, so you never run out and never pay to keep a tank hot all day. We install, repair, replace, and convert homes to tankless across Clarksburg, Germantown, Gaithersburg, and Montgomery County, sized and set up so it works the way it should from day one. Searching for tankless water heater installation near me? You found your local crew.

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On demand
Hot water that never quits
The basics

How a tankless water heater works

Instead of storing and reheating a tank of water around the clock, a tankless unit heats water only when you open a hot tap. Water flows through a powerful gas burner or electric heat exchanger and comes out hot in seconds, for as long as you need it. When you turn the tap off, it stops. That is why tankless units use less energy, take up a fraction of the space, and can deliver hot water for as long as the shower runs. They also last far longer than a traditional tank, which is why so many Clarksburg and Montgomery County homeowners upgrade. Prefer a traditional tank? We do those too.

What we do

Tankless water heater services

Installation, conversions, repair, and the maintenance that keeps a tankless running for decades.

Tankless Installation

We size the unit to your home’s hot water demand and install it correctly, including gas, venting, and water connections.

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Tank to Tankless Conversion

Switching from an old tank? We handle the full conversion, from removing the tank to upgrading the gas and venting it needs.

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Tankless Repair

Error codes, no hot water, ignition or gas burner faults, and flow problems diagnosed and fixed by techs who know these units.

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Descaling & Maintenance

Maryland hard water leaves scale inside the heat exchanger. Regular descaling keeps your unit efficient and protects the warranty.

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Gas & Electric Tankless

We install and service both gas and electric tankless heaters, and help you choose the right fit for your home and budget.

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Tankless Replacement

If your tankless is past its prime, we swap it for a new high efficiency unit with minimal disruption.

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How it works

Hot water the moment you ask for it

No tank, no waiting, no standby loss. Here is what happens when you open the tap.

1

You open a hot tap

A shower, sink, or appliance calls for hot water anywhere in the home.

2

Flow sensor fires

The unit senses the water moving and instantly ignites the burner or elements.

3

Water heats on the move

Water races through the heat exchanger and comes out hot within seconds.

4

Endless, then off

It keeps heating as long as you need, then shuts down completely when you stop.

Why homeowners switch

The benefits of going tankless

It is one of the few upgrades that pays you back every month while making daily life easier.

Endless hot water

Long showers, back to back, plus laundry and dishes, without ever running cold.

Lower energy bills

No reheating a full tank all day means less wasted energy and real monthly savings.

Space saving

A unit the size of a small suitcase mounts on the wall and frees up your floor.

Lasts much longer

A well maintained tankless can run 20 years or more, roughly double a typical tank.

No tank to burst

With no stored tank of water sitting in your home, there is far less risk of a big leak.

Fresh, not stored

You get freshly heated water on demand rather than water that has sat in a tank.

Ready for endless hot water?

Know your options

Gas, electric, and the right size

The key to loving a tankless is sizing it to how much hot water your home uses at once. We get that part right.

Gas Tankless

The most common choice for whole home use. High output handles several fixtures at once, with proper venting that we install.

 
6088-Tankless Water Heater

Electric Tankless

Compact and simple with no venting, great for smaller homes, additions, or point of use spots like a single bathroom.

Sizing by Flow Rate

We calculate your peak demand in gallons per minute, counting the fixtures you run together, so it never falls behind.

Not sure tankless is right for you? We will compare it honestly against a traditional tank water heater for your home.

Built for Maryland homes

Hard water and your tankless

Tankless units are efficient, but Maryland hard water leaves scale on the heat exchanger that can choke performance and void a warranty if ignored. The fix is simple: descale on a schedule. Many manufacturers require it, and we make it easy with an annual visit.

  • Descale the heat exchanger about once a year
  • Clean the inlet filter so flow stays strong
  • Pair it with whole house filtration to slow scale
  • Keep the venting and gas connections checked and clear
Annual peace of mind

Add it to a membership

Our membership includes an annual tankless descaling and inspection, which keeps your unit efficient and your manufacturer warranty intact.

See Membership Plans
The people in your home

A crew you are glad to let in

Every technician is part of our own trained, background checked team, not a subcontractor. We size your system right, install it cleanly, and show you how to get the most out of it.

Clarksburg Plumbing Crew
From our neighbors

What your neighbors say

4.8
Based on 518 Reviews
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S D.
July 16, 2026

Highly recommend Clarksburg Plumbing! They accommodated my schedule right away. John and Maddie were amazing!! They took care of my pipe repair quickly and efficiently! 10/10 recommend!

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Jim C.
July 16, 2026

John and Maddie were the ultimate professionals. Came on time. Clear estimate. Excellent work fixing my pressure relief valve, which had been improperly installed by another plumber. Clarksburg are my go to plumbers from now on.

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Ruth T.
July 15, 2026

Arrived on time, explained entire process, had plan a,b,c, in place, Did the best job I could ask for, and even show me the hole in my main line in the pipe. Highly recommend this company for all your plumbing needs.

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Pamela B.
July 15, 2026

Absolute best plumbers I have ever used. Needed them a few times recently and each time they were so professional, kind and resolved each problem the first time around. This last issue took them several hours to fix. They explained everything along the way and gave a very fair price for a lot of work. They also work very cleanly! I will never use another plumber!

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Al B.
July 9, 2026

I had Seth come out to change my outdoor spiked. He was in and out in no time and did a great job!

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Duh S.
July 7, 2026

Called yesterday, they came today, had a clogged kitchen sink. The service was quick and Professional. Great job!

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Praneeth M.
July 7, 2026

Garrett did a fantastic job snaking our clogged drain. He was incredibly professional, efficient, and made sure everything was completely clean before he left.

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Andrea B.
July 7, 2026

I needed a water valve installed for my new fridge and a new faucet installed in upstairs bathroom. Seth was amazing. He came out and really listened to me and my concerns. We even called the company that was going to deliver my new fridge so he would have a better understanding of what he needed to do his job. It made me feel at ease with the whole process. He is even coming back later in the week to install new fridge once it’s delivered. I will absolutely call them again.

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Shariq S.
July 6, 2026

Seth was great explaining the descaling process and performing it with precision.

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Sarah R.
July 1, 2026

Seth replaced our hose bib in the front yard and did a great job! It was hot out but he still took the time to make sure everything was good to go. I called Clarksburg Plumbing yesterday and they were able to come out next day. Very professional.

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B H.
June 30, 2026

Seth and his partner were very professional and did an awesome job fixing the main water valve. I highly recommend them.

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CandP H.
June 29, 2026

Amazing experience with Clarksburg Plumbing LLC! Our well pump needed replacement. Seth showed up right on time, was very professional, knew what he was doing and pricing was fare (they showed me all estimates upfront and explained everything). Any future plumbing needs and Clarksburg Plumbing will be my first call. I’ll also ask for Seth by name if I can get him!!

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Sarah B.
June 26, 2026

We had a pinhole leak suddenly appear in our outdoor hose bib, and Clarksburg Plumbing was able to provide next-day service, which we really appreciated. Our technician, John Brown, arrived right on time after giving us a 30-minute courtesy call. John quickly diagnosed the problem, explained everything clearly, and provided an accurate assessment of what needed to be done. He completed the repair in under two hours, and the quality of his work was excellent. Before leaving, he even took the time to share some helpful tips on how to prevent similar issues in the future. John was friendly, professional, knowledgeable, and efficient from start to finish. We couldn’t have asked for a better service experience. I highly recommend Clarksburg Plumbing and especially John Brown for anyone needing reliable, high-quality plumbing work.

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Neil D.
June 26, 2026

Great experience. Team arrived on time and were efficient. Seth explained everything with even gave me some tips and pointers to look out for moving forward. David made sure everything was cleaned up before they left.

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Erik H.
June 18, 2026

Extremely professional and did an amazing, quick job. Highly recommend!

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Eliot C.
June 12, 2026

Clarksburg Plumbing installed an external bib; after a couple of months there was a mechanical failure in the vacuum breaker. They responded within 24 hours, fixed it, no charge. Seth was prompt, courteous and efficient. We will be happy to use their services again.

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Joseph A.
June 10, 2026

Franklin and Cris — great job and great guys. Everything went smoothly with water line replacement. A tough job. Thanks for your hard work. Clarksburg Plumbing is the best!

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Rebecca B.
June 8, 2026

Charlie was an excellent technician. Thanks.

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Joshua R.
June 5, 2026

Cris and Franklin from Clarksburg Plumbing did incredible work at our home fixing an underground water service leak. They encountered complications but went to plan B efficiently and skillfully and got the job done well and in a timely manner. They also answered all our questions patiently and taught us a lot of why they made the decisions they made. We are very pleased with their work and plan to recommend them and all of Clarksburg Plumbing to our friends and neighbors.

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David N.
June 2, 2026

Franklin and Cris were especially helpful, informative and instructive. The rest of the instructive, polite and professional. Overall a good experience for me and my wife.

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Stephen C.
May 17, 2026

We had a clog in our septic line. The Clarksburg Plumbing crew located the troublesome area using a camera and then removed the clog and tested the line. They then remounted the toilet with a new wax ring and cleaned the area. Overall, a great experience!

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Tom W.
May 7, 2026

Seth did a great job today 5/7/2026 installing a new toilet for us. Second time he has helped us through Clarksburg Plumbing. Ask for him by name and you won’t be disappointed!! Thanks Seth!

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A E.
May 7, 2026

John Brown did a great job. He was on time, Professional and pleasant. Thanks

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peter D.
April 30, 2026

These guys are diligent, courteous and did a great job! They were friendly, helpful and thorough - I'd recommend Clarksburg plumbing any day of the week and twice on Sundays

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Seth K.
April 28, 2026

Seth was absolutely amazing! He was very courteous and knowledgeable about his profession. He arrived on time and worked the entire time. He kept me in the loop the entire way as to what he was doing. He diagnosed two leaks within our toilet system and readily fixed them. Clarksburg Plumbing should be honored to have such an amazing employee as him.

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Jethro L.
April 28, 2026

Seth from Clarksburg Plumbing performed a thorough check of all our household plumbing and tested our water pressure and hardness. He was intelligent, patient, and pleasant to work with!

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Alvin B.
April 27, 2026

Had a great experience with Clarksburg plumbing. Franklin and Chris were excellent! They clearly explained every step of the process. They kept any mess to a minimum and cleaned up the work area extremely well after the job was done. The office also amended our invoice to remove a line item that was in our estimate, but didn’t need to be done after all. We are extremely happy with Clarksburg Plumbing from the estimate to completion!

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Sam Z.
April 27, 2026

Was very Satisfied with Garret Kline work on our water heater at earth animal Riverstone. As I helped him he taught me a lot and showed me somethings here and there of industrial water heaters. My boss was very satisfied he got our plant back in production and overall very satisfied. Especially since we stayed together till almost 9:30pm installing everything. Very good tech and very professional with his job and for these reasons we are glad to say that any plumbing needs our company has we will be calling Garret for he is our go to plumber.

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Matthew B.
April 23, 2026

Incredible experience. I called Clarksburg Plumbiing yesterday because of a broken garbage disposal, arrived this morning, and fixed it within an hour. John Brown was professional, informative, friendly, and skilled. Such a great experience that I signed up for the membership. Looking forward to working with Clarksburg Plumbing and John again on regular maintenance for the home. And I am comforted to know that I have John and his team available to me in case of emergencies. Thanks John !

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Maggie N.
April 17, 2026

We contacted Clarksburg Plumbing to have the drain and faucet connected for our new powder room sink. Plumber and apprentice were on time. The drain pipe had to be replaced to connect to new sink location. The apprentice completed the work with instruction and supervision. I only gave four stars because they were onsite for approximately 30 minutes and charged us $641. They were professional, and cleaned up after themselves. I just felt like perhaps we should have gotten a second quote. it seemed expensive but I haven't had plumbing work done in several years.

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Toni S.
April 17, 2026

Highly recommend Clarksburg Plumbing. Very professional, nice family business. I have used them for many different things over the years from leak detection to testing backflows, water heater replacements, pipe replacements, and each time has been a very positive and successful visit. Garrett is awesome, very thorough, very communicative, use them if you get a chance.

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Sandra B.
April 16, 2026

Cris and Franklin was very polite and helpful. Cris explained everything about what they would be doing to find my water line. I would highly recommend Clarksburg Plumbing !!!

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Brian F.
April 14, 2026

Garrett was fantastic, Troubleshooted the problem and knew in minutes what was wrong and how to fix it. Solved the problem answered all of my questions and was very professional.

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Andrew F.
April 7, 2026

#1 call for the #2 pipe. Ben and his assistant promptly connected a new cast iron riser to my existing sewer lateral, keeping my project in progress. I’m doing my own plumbing in the bathroom and have pro tools and experience, but this tie-in was a job for a real pro and I’m glad I called them in. With a wife and 3 daughters, every day on our water system is a heavy flow day, and downtime needed to be minimized. As an engineer I ask lots of questions and he was patient and answered them. Bravo Zulu!

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Daniel G.
April 6, 2026

He went out of the way to get the job done right and very skillful.

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Douglas M.
April 5, 2026

Pablo did an excellent job!

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Valerie F.
April 2, 2026

Very knowledgeable,courteous, explained well.

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Christina W.
March 30, 2026

wonderful. could not have been more professional I always ask for him.

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Rob P.
March 27, 2026

We had a sewage backup within three days of moving into our new home. We called Clarksburg, and Charlie came and did a great, thorough job. He explained everything he was doing, and even recommended a great water damage mitigation company. I will definitely be calling them back if we have another issue.

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Brady R.
March 26, 2026

He came in and assessed the issues, told me wha needed to be done and then took care of the h jobs. He explained what he did. Very good experience.

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Bill O.
March 23, 2026

Very knowledgeable and professional. Would definitely call for other issues in the future.

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Steven B.
March 19, 2026

Tyler was very knowledgeable, courteous, and efficient completing work at our home

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Patty A.
March 19, 2026

Service tech was professional, efficient and knowledgeble.

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Sara P.
March 18, 2026

John Brown was very knowledgeable and kind. The work was completed quickly and the job site was left clean. He is also a Yo-Yo master, lol

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Conor M.
March 18, 2026

Ben was helpful in explaining what was needed and quick with his work.

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Sisyphean F.
March 13, 2026

John Brown is a steller representative of Clarksburg Plumbing. He arrived on time. Solved a problem I've had for years by suggesting the right tool. No prior plumber ever thought of an alternate method to solve the issue. Polite, pleasant and professional. Give him a raise!

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Jesse J.
March 13, 2026

Ben H. from the Clarksburg plumbing team did a great job. He flushed the tankless water heater and replaced the backflow without any issues. He was on time, very knowledgeable, and explained what he was doing. Really appreciate the good service.

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A H.
March 12, 2026
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Johnny E.
March 6, 2026
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Leonel A.
March 6, 2026

I called that morning, they had someone (Tyler) out that same morning. Mind you, this was for a routine job. Tyler arrived; listened to my long, drawn out explanation. He diagnosed it within minutes, explained the issue, how he would fix it, and got to work. He also let me explain an additional issue I was having but instead of charging me to fix it, advised me to take the issue to the company that has lifetime warranty. 10/10 would recommend and use again!

Good questions

Tankless water heater FAQ

What homeowners ask us most about going tankless.

With regular descaling, a tankless unit commonly lasts 20 years or more, roughly double the life of a traditional tank. Skipping maintenance in hard water areas like ours is the fastest way to cut that short.

Yes, on energy. A tankless only heats water when you use it, so you are not paying to keep a tank hot 24 hours a day. The upfront cost is higher, but the monthly savings and longer lifespan make up for it over time.

Not if it is sized right. A tankless makes hot water continuously, so it will not empty like a tank. The key is matching the unit to your peak demand, the fixtures you run at the same time, which we calculate before we install.

For most homes that use a lot of hot water or want endless supply, yes. You gain space, lower bills, and a longer lifespan. For a small home with light use, a quality tank may make more sense, and we will tell you honestly which fits.

Gas units deliver higher flow and suit whole home use, but need proper venting and a gas line. Electric units are compact, simple, and great for smaller homes or single points of use. We help you choose based on your home and demand.

Yes. The most important task is descaling the heat exchanger about once a year, especially with Maryland hard water. It keeps the unit efficient and is often required to keep the manufacturer warranty valid. We include it in our membership.

Absolutely. We handle the full conversion, including removing the old tank and upgrading the gas, venting, and connections the tankless needs. We will assess your setup and give you a clear, upfront quote first.

Yes. We are fully licensed and insured, every technician is background checked, and we are available 24/7 for plumbing emergencies across Clarksburg, Gaithersburg, Germantown, and the surrounding Montgomery and Frederick County area. Call 301 972 2223 any time.

Ready for endless hot water

Go tankless with us.

Let's Flow.

Thinking about an upgrade, or need your tankless serviced? Book online or call and talk to a real neighbor. We are here 24/7 for emergencies.

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Let's get started

(301) 972 2223

Available 24/7 for Clarksburg and beyond

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