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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.

Endless Hot WaterLicensed & InsuredEnergy Efficient
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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 565 Reviews
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Pamela B.
September 21, 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! I wanted to add a new review but I could not so I am editing my previous one. I had to use Clarksburg Plumbing again today and like last time, they were exceptional. I was fortunate enough to have John and Madeleine as my service technicians. I will always request them going forward. They are kind, professional and knowledgeable! I am sure the company knows how fortunate they are to have them as part of their team!

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John S.
September 18, 2026

We thank Clarksburg Plumbing again for superior, high quality and friendly service! ----- Clarksburg Plumbing visited us last week to repair an external spigot that had been leaking. The work involved creating a little inside access panel. Within and without, a nice, neat job by Charlie and his understudy apprentice, Chris. Problem solved and happy campers here! ----- UPDATE: Plumber John Brown presented himself on time and got right to work replacing my Mom's ancient leaky kitchen faucet with a new store-bought one that I provided. During the process, Mr. Brown detected and showed me two other problem areas contributing to the water leaks: a cracked drain pipe and then rusted threads on the sink trap. He efficiently and expertly repaired all three elements to our full satisfaction. Plus, John is a super nice guy, completely honest and classy enough to laugh at all my corny jokes! The next time you need any plumbing work in your home or business, I strongly endorse John Brown and anyone on the Clarksburg Plumbing team! UPDATE 2: John and his understudy Maddie visited, and quickly solved the problem of a pinhole leak in copper tubing leading from our hot water heater. He advised us on other plumbing needs, for which we have scheduled and will otherwise follow-up. Thank you Clarksburg Plumbing for your top quality people - John Brown in particular - and performance.

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John H.
September 17, 2026

Their work was excellent. The problem solved a difficult situation with a water pipe leak and worked hard to implement it. Very grareful for the work of Franklin, Noah, Cotton, Markell, Tevon, Jason, Deybis

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G M.
September 16, 2026

Tevon, Noah, Markell, and Morrow were sent by Clarksburg Plumbing LLC to repair an outside broken waterline They arrived at the appointed hour and completed the work in about 3 hours. I was very impressed with them and I would like to recommend all four of these very professional and friendly technicians. Clarksburg Plumbing is a fantastic organization; the office staff, Katie and Charlotte, who helped me are the best.

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Tom F.
September 15, 2026

Our well lines began to leak after many years of service. Noah Zohrabi,YDeybis Gomez & Markel Watts came to the rescue! Excellent service from some very professional, courteous & knowledgeable folks!

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Viannah E.
September 12, 2026

Thank you to Seth, who came on Wednesday and fixed one of our two toilets and fixed our primary bedroom shower. And thank you to Charlie, who came today and replaced our other toilet and replaced our garbage disposal. You are both lifesavers! Our weekend (and going forward) will be MUCH nicer now that we can use our bathrooms (and garbage disposal) again. Highly recommend Clarksburg Plumbing.

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Ms. R.
September 11, 2026

Excellent service today from John Brown and Madeleine S. They were very kind and took time to explain the issue with my dishwasher. I really appreciate their professionalism and efficiency. I would definitely consider using this company again based on my service today!

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Annabelle S.
September 11, 2026

GREAT service and expertise! John and Maddie just installed a water filtration system to our home. The process took one day to install and then they came back from the 48 hour install period to ensure everything was working well. John was familiar and knowledgeable about the water system we bought. Maddie and John kept our space clean, clearly explained how to ensure longevity for our system to last, and the difference it will make in our home. We appreciate their hard work and professionalism. This is our second time using Clarksburg plumbing. We would highly recommend their company to our family and friends.

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Dia R.
September 11, 2026

We had a good experience with Clarksburg Plumbing: it was easy to schedule, they communicated clearly, arrived on time, and did a great job on completing the work.

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Dan M.
September 11, 2026

Great

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Roxie H.
September 7, 2026

John did Excellent job with installing water refrigerator line for my refrigerator. My Condo was built 1983, and pipes were complicated, but not for John. He found it easy and finished the job in the timely manner. I am very happy customer. Thank you John!!

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Rebecca W.
September 4, 2026

John Brown was knowledgeable, responsive and pragmatic. He saved us time by diagnosing then recommending best course of action. We are now waiting for the estimate for the project and will be going with Clarksburg Plumbing on our 1948 cap cod renovation. Highly recommend this company’s knowledge, professionalism and responsiveness.

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vince R.
September 3, 2026

Franklin and his crew showed up promptly and communicated great with us to help limit disruption with the tenants at 4 of our building. Unfortunately for us a second water main leak occurred the day before. But luckily for us they were able to stay on site another 2 days and knock the second one out, even staying till 8pm to find the line and get it repaired. These will be the guys I request for our next time needs

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Jonathan I.
September 3, 2026

Seth and Brady did a fantastic job replacing our water heater. They were professional, courteous, and detail oriented. They arrived on time and did careful, clean work all the way through. We have worked with Clarksburg Plumbing on smaller items before this and would be very happy to utilize their services in the future, as well.

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Ata B.
September 2, 2026

John and maddie were exceptionally professional and did an most effetive job in installing a expansion tank on our water heater.

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Zach M.
September 2, 2026

Brady did an excellent job. From the time I called to the time the repair was completed was within 4 hours

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Mary W.
September 2, 2026

We were very happy with the service we received today from John and Maddie. They were both very professional, ran the necessary tests to confirm the issue, and explained what they were doing step by step. They wore the protective booties to keep the floor nice and dry from the rainy weather too. Thank John and Maddie for all your help!

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John T.
September 2, 2026

Seth and Brady were great. Fair price, courteous, work completed quickly, and looks good.

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Dreaming D.
September 1, 2026

John was amazing!! Friendly, knowledgeable and such a professional. First time ever having a women plumber, Maddie, who was talented, and very personal and professional. Great experience and I will definitely use Clarksburg Plumbing again

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Jennifer F.
August 31, 2026
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Maria O.
August 29, 2026

Excellent professional service.

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Karl D.
August 29, 2026

Mr Brown was a real professional. I was expressed how everything was done in an orderly manner. I’m very satisfied with the plumbing work he completed. Thank You!!

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Hai-Fun W.
August 29, 2026

Seth provided an estimate on 8/25 for upgrading my basement sump pump to a dual system. He explained the setup clearly and promptly reordered the exact Wi-Fi-capable model I requested before installation. Seth and Maddie returned on 8/28 and did a fantastic job. The system works great, and their professionalism was top-notch. Highly recommended!

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Gregory R.
August 29, 2026

John is very knowledgeable, friendly and professional. He does a great job of explaining things.

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Gabriel B.
August 27, 2026

Katie and the Clarksburg Plumbing team were phenomenal. Katie came highly recommended, and it could not have been a better choice. During an emergency plumbing issue at one of the buildings we service, her team came right out and made it happen. It was a complicated situation, but they handled it from start to finish with great responsiveness, professionalism, and patience throughout the entire process. We greatly appreciate their help and highly recommend them.

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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