Tankless Water Heater Repair
Tankless water heater repair across DC, Maryland, and Virginia. Serving DC, Maryland, and Virginia from Suitland, MD.
Tankless units are reliable, but when they act up they do it their own way: error codes on the display, water that flips between hot and cold, or a unit that will not fire at all. Most of it traces to a handful of causes, and we know them all.
We repair tankless water heaters across the DC metro, and we service them too, because the number one killer of tankless units in this area is scale that nobody ever flushed out.
Tankless problems we fix
The display code is a starting point, not a diagnosis. We trace the actual fault, whether it is scale, a sensor, gas supply, or venting, and fix the cause instead of resetting the unit and hoping.
- Error codes and units that lock out or will not ignite
- The cold water sandwich: hot, then cold, then hot again
- Scale and mineral buildup choking the heat exchanger
- Flow sensor and ignition component failures
- Descaling and annual flush service that extends the unit’s life
What to expect on the day
After the repair is finished, we test it under normal use before anyone packs up: water on, drains running, pressure checked where it applies. Then Brandon walks you through what he found, what he fixed, and anything worth keeping an eye on. All of that comes after the part you already know about, the diagnosis and the price you approved before a single tool came out. We leave the work area clean, and you end the visit knowing exactly what you paid for.
Every job ends tested and cleaned up, with the bill matching the price you approved. If something in your home or building is leaking or just not working right, call us any time or ask for a price online. Curious what our finished work looks like? The project gallery has plenty of it.
Scale is the silent killer
DMV water carries enough mineral to coat a tankless heat exchanger in a few years. The unit works harder, the temperature swings, and eventually parts fail. A periodic flush costs a fraction of a repair and keeps the warranty happy.
If your unit has never been descaled, that is the first thing worth doing, and we can usually tell you within minutes whether scale is your problem.
- Descaling service that restores performance
- Real diagnosis, not a reset-and-pray
- Most major tankless brands serviced
Why the DMV calls Jackson Plumbing
Too many companies in the Washington metro treat an arrival time as a suggestion. When we give you a window, we mean it, and same-day response is normal for us. Our phone is answered 24 hours a day. Once we arrive, you get a price before we start, and the bill at the end matches it. One customer put it simply: he shows up when he says he is coming.
Brandon Jackson has spent nearly three decades in this trade, and he built the business around a simple idea: treat people the way you would want to be treated in your own home. That means explaining what is wrong in plain language, giving you honest options instead of the most expensive one, and leaving the space cleaner than we found it. It is why so much of our work comes from repeat customers and neighbor-to-neighbor referrals across DC, Maryland, and Virginia.
When you hire us, the licensed Master Plumber on the paperwork is the plumber who answers for your job. That is Brandon, license PLM40000116, also credentialed in Maryland (109495), Virginia (2710083375), and with WSSC (P-83640), ASSE certified, and A-rated by the BBB. The same qualified plumber handles the diagnosis, the permits, and the final connection.
If a fitting we installed starts to weep a month later, you are not starting over with a stranger. You call the same number, and Brandon comes back to look at his own work. He knows what he did and why, which usually makes the fix quick. That follow-through is a big part of why customers across the DMV call us a second time.
Honest pricing, no hidden fees
Before anyone can give you a fair number, somebody has to figure out what is actually wrong. So Brandon finds the cause first, then prices the fix, and you hear that price on site before a single fitting comes off. You decide whether we go ahead. Once you say yes, nothing gets tacked on, and nothing shows up at the bottom of the invoice that you did not hear about first. The bill at the end matches what you agreed to. One customer summed it up in a review: fair pricing, no hidden fees. That is the whole policy, and it has not changed since Brandon started this business. Call (202) 840-1998 any hour of the day or night, or send us the details and Brandon will call you back.
See Why Clients Recommend Us
Brandon Jackson is one of the best plumbers I have ever met. He is professional, honest…
Celestine RobinsonGoogle ReviewsHe is a man of his word. He shows up when he says he is coming and he cleans up behind himself.
T. T.Google ReviewsTheir service was prompt, professional, and reliable. The pricing was fair, with no hidden fees.
Wesline ReynaGoogle ReviewsBrandon was extremely knowledgeable and professional from the moment he arrived.
M. Owens JonesGoogle ReviewsStraight Answers
My tankless unit is showing an error code. What now?
Note the code and call us at (202) 840-1998. The code narrows it down, but the same code can have several causes. We diagnose the actual fault on site and fix it properly.
Why does my hot water go cold for a moment and come back?
That is the classic cold water sandwich, common on tankless systems. Depending on your unit and plumbing there are real fixes, from settings to a small buffer solution. We will tell you which applies.
How often should a tankless unit be flushed?
In the DMV, roughly once a year for most homes. Regular descaling keeps the heat exchanger clean, holds performance steady, and prevents the most expensive failures.
Do you work on my brand of tankless?
We service most major tankless brands. Tell us what you have and we will confirm before we come out.
Repair or replace an aging tankless unit?
If the heat exchanger is sound, repairs usually make sense. If it is corroded or the unit is far past its expected life, we will tell you straight and quote a replacement honestly.
Need a plumber you can trust?
Call (202) 840-1998 and a Master Plumber picks up, day or night. You hear the price before any work begins.