Water heater repair
Heating elements, thermostats, gas valves, pilot and igniter problems, leaking valves, and no-hot-water diagnostics for tank and tankless units.
Water Heaters · Fairfax, VA
Quick answer
LeMaster Plumber repairs and replaces tank and tankless water heaters throughout Fairfax, usually the same day you call. Whether your unit is leaking in a Mantua basement or running lukewarm in a Kings Park West townhome, we’ll give you the honest repair-or-replace numbers. Call (703) 832-9090 for upfront-priced water heater service in Fairfax.
Fairfax’s mix of housing means we see water heaters of every age and type — original units in long-held family homes, builder-grade tanks in newer townhomes, and tankless upgrades in renovated houses. Northern Virginia’s hard water leaves sediment that shortens any tank’s life, so a Fairfax heater that’s rumbling or running cool is often telling you it’s near the end. We diagnose it and lay out your options clearly.
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.
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.
Need water heaters in Fairfax? Pick your own appointment time online.
Or call (703) 832-9090 — we answer 24/7.
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.
In most cases, yes. We stock common tank sizes and can usually diagnose and replace a failed Fairfax water heater the same day, so you’re not left without hot water overnight.
It depends on your hot-water demand and whether your home needs gas or venting upgrades. Tankless gives endless hot water and saves space; we’ll tell you honestly whether it pays off for your Fairfax home.
Rumbling almost always means sediment buildup, which Northern Virginia’s hard water accelerates. Flushing often fixes it; if the tank has already corroded, replacement may be the smarter spend.
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.