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 basicsHow 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.
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.
Tankless Repair
Error codes, no hot water, ignition or gas burner faults, and flow problems diagnosed and fixed by techs who know these units.
Descaling & Maintenance
Maryland hard water leaves scale inside the heat exchanger. Regular descaling keeps your unit efficient and protects the warranty.
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.
Tankless Replacement
If your tankless is past its prime, we swap it for a new high efficiency unit with minimal disruption.
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?
Book OnlineCall (301) 972 2223
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.
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.
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.
From our neighbors
What your neighbors say
Rating
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!!
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.
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
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.
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.
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
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!
John T.
September 2, 2026
Seth and Brady were great. Fair price, courteous, work completed quickly, and looks good.
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
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!!
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!
Gregory R.
August 29, 2026
John is very knowledgeable, friendly and professional. He does a great job of explaining things.
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.
Martin H.
August 27, 2026
The plumber from Clarksburg Plumbing who worked on my broken gas hot water heater was John Brown. John is an amazing plumber. He is extremely energetic, very efficient, has amazing knowledge about plumbing, and is very honest. He is also very friendly, considerate, and took the time to answer all my questions. He diagnosed the problem quickly (which was a defective burner assembly). Then when I showed him the manufacturer's warranty, he took the initiative to immediately call the manufacturer and order all the necessary parts (which were free under the warranty). When the parts were delivered, he made sure to show up the next day and install the parts. As we talked throughout his time in the house, I could see that he has very deep knowledge of plumbing, which gives me confidence that his work is top quality. I also had a problem with very high water pressure in the house. The pressure regulator had to be replaced. John, working with Maddie, did a great job in fixing that as well. After the work, everything was cleaned up completely.
Marina L.
August 26, 2026
The best plumbers in the Bethesda area! We have worked with over 4 companies and none could figure out our issue until we called Clarksburg. They are honest, flexible and communicative. Wonderful experience from start to finish.
Douglas F.
August 26, 2026
John and Maddy were excellent! Professional and beyond. Not only did the effectively fix our kitchen leak, but gave solid recommendations to fix other problems in advance. Appreciate them! Arrived on time, came quickly . We are definitely using this company for the rest of our remodeling planned. Thank you again. Doug Frankel Cost was no issue. They stand behind their work as they did today
Kevin
August 20, 2026
Knowledgeable technicians who explained everything in detail and did a great job installing my new water heater.
Lynn A.
August 18, 2026
We had our first experience with Clarksburg Plumbing & now we're sold! Charlie replaced our powder room toilet & did a great job. We moved to our house 3 years ago (& needed a new plumber) so we're happy to a great plumber now. Highly recommend!
Stephanie B.
August 13, 2026
Booked an apt with Clarksburg plumbing at 7am and by 9am they were at my house. Seth was a great tech that explained anything he was doing and answered my questions. would use Clarksburg plumbing again.
Susan F.
August 11, 2026
Highly recommend John Brown from Clarksburg Plumbing LLC! Yesterday John flushed and descaled our tankless water heater. We've gotten used to waiting and waiting for service people. That's not the case with John. He arrived pleasantly early for both the initial visit (for a no-cost estimate) and for the actual service call. He was personable, knowledgeable, and very patient with our many questions. He really helped us understand the ins and outs of this new-to-us technology of tankless water heaters. We're already recommending him to our neighbors!
Judith
August 10, 2026
John and Maddie were professional and customer focused. They completed several plumbing projects efficiently and verified my satisfaction with the work. John diagnosed a plumbing problem for future remediation. Great people and company.
Daniel J.
August 7, 2026
I had Clarksburg Plumbing come out for a minor home plumbing repair. Seth and Maddie were on time, friendly, and professional. They provided a free estimate, and I went ahead with the repair. The repairs took just under 2 hours and I was completely satisfied with the service. I will definitely use Clarksburg Plumbing again in the future. Thanks, Seth and Maddie!
Good questions
Tankless water heater FAQ
What homeowners ask us most about going tankless.
How long does a tankless water heater last?
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.
Do tankless water heaters really save money?
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.
Will I ever run out of hot water?
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.
Is tankless worth the higher upfront cost?
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.
Should I get gas or electric tankless?
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.
Do tankless heaters need maintenance?
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.
Can you convert my old tank to tankless?
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.
Are you licensed, insured, and available for emergencies?
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.
Book OnlineCall (301) 972 2223