Water heater repair
Heating elements, thermostats, gas valves, pilot and igniter problems, leaking valves, and no-hot-water diagnostics for tank and tankless units.
Service · Northern Virginia
Hot water back on — repaired or replaced the same day.
Quick answer
LeMaster Plumber repairs, maintains, and replaces both tank and tankless water heaters for homeowners throughout Northern Virginia, usually the same day you call. If your unit is leaking, making noise, or only delivering lukewarm water, we will tell you honestly whether a repair makes sense or a replacement will save you money. Call (703) 832-9090 for upfront pricing on water heater service.
When the hot water disappears, you want a straight answer fast: fix it or replace it. We diagnose the real problem — a failed heating element, a bad thermostat, sediment buildup, or a tank at the end of its life — and give you the honest recommendation, not the most expensive one. Whether you have a standard tank, a tankless unit, or you are upgrading, we size and install it right.
Heating elements, thermostats, gas valves, pilot and igniter problems, leaking valves, and no-hot-water diagnostics for tank and tankless units.
Right-sized gas or electric tank water heaters installed to code, with new connections, a fresh drain pan, and proper venting.
On-demand tankless units for endless hot water and lower standby energy loss — sized to your home’s real demand.
Annual tank flushing removes sediment that shortens lifespan and drives up your energy bill — especially with NOVA’s hard water.
Thermal expansion tanks, temperature-and-pressure relief valves, and shutoffs installed and replaced to keep the system safe.
A leaking tank can flood a basement fast. We respond quickly, shut it down safely, and get hot water restored.
We test the heater’s components and check its age and condition to find out why you have lost hot water.
We lay out the honest math: the cost to repair versus replace, and which gives you more reliable hot water for the money.
If you replace, we size the tank or tankless unit to your household’s real demand so you never run short or overpay.
We install with proper venting, connections, and safety valves, then test everything and haul away the old unit.
Why LeMaster Plumber
You approve the price before we start — no surprises and no pressure. You’ll always know the cost before any work begins.
Every job is backed by proper training, the right permits, and a workmanship guarantee.
We show up on time, protect your space, and leave the job cleaner than we found it.
Every water heater repair and installation is quoted upfront before we begin. We give you the repair-versus-replace numbers side by side so you can make the call that is right for your home and budget. You approve the price before any work starts.
Ready to get started? Pick your own appointment time online.
Or call (703) 832-9090 — we answer 24/7.
As a rule of thumb, repair a heater that is under about 8 years old with a minor fault like a heating element or thermostat. If the tank itself is leaking, the unit is 10–15+ years old, or repairs are stacking up, replacement is usually the smarter spend. We give you both numbers upfront so you can decide. (See our full guide in Resources.)
A conventional tank water heater typically lasts 8–12 years, while a well-maintained tankless unit can last 20 years or more. Northern Virginia’s hard water shortens that lifespan when sediment is allowed to build up, which is why annual flushing matters.
Tankless units deliver endless hot water and use less standby energy, which can lower bills over time, but they cost more upfront and sometimes need gas-line or venting upgrades. They are a great fit for households that run out of hot water or want to free up space. We will tell you honestly whether it pays off for your home.
In most cases we can diagnose and replace a failed water heater the same day you call, so you are not left without hot water overnight. Tankless conversions may take longer if gas or venting upgrades are involved.
Popping or rumbling almost always means sediment has built up at the bottom of the tank, where it traps water that boils against the burner. Flushing the tank usually fixes it; if the buildup has already caused rust or a leak, it may be time to replace.
Turn off the water supply to the heater and, for an electric unit, switch off its breaker; for gas, set it to "pilot." Then call us. A leaking tank rarely stops on its own and can flood a finished basement, so it is one of the jobs we prioritize for fast response.
Get In Touch
Pick your own appointment time online in about a minute — or call for emergencies, or send a few details with the form and we'll get right back to you.