Water Heater Repair in Blacksburg, VA
Tell us what your water heater is doing, and a licensed contractor who covers Montgomery County will get in touch.
Tell us about the job
It takes about a minute.
Cold groundwater and long winters wear on a water heater here
Water heaters in Blacksburg work against cold incoming water for eight months of the year, October through May. The colder the water coming in, the longer the burner or the heating element has to run to bring a tank up to temperature. That extra runtime wears on the thermostat and the heating element in an electric unit, or the burner assembly and thermocouple in a gas one.
Winter nights here average 26°F, and Montgomery County has seen 18 winter storms and 94 damaging wind events over the past ten years. Statewide, 22% of Virginia households lost power for 24 hours or more in 2024. When the power goes out on a cold night, a tank of water cools fast, and most heaters need that power back before they start heating again. A gas water heater with a standing pilot is the exception. It keeps burning through the outage and has hot water waiting when everything else comes back on.
- 26°F
- the average winter night, and colder incoming water means longer heating
- 8 months
- October through May, the months homes here need heat
- 22%
- of Virginia households lost power for a day or more in 2024, and a heater with an electric element or electric ignition stops without it
NOAA nClimDiv, 1991–2020 normals
A new water heater would cut about $320 a year off hot water for a typical Virginia home.
Estimates for a typical Virginia home, compared with an older unit built to the federal minimum, from EIA household energy data and Virginia fuel prices. Your home will differ.
Repair makes sense when an element, thermostat or gas valve has failed.
Replacement makes sense when the tank itself is leaking.
- Why is my water heater leaking from the bottom?
- The most common reason is that the tank itself has rusted through and is failing. Sediment builds up on the bottom of the tank over years of use, and it wears through the lining from the inside until the steel underneath gives way. Once a tank is leaking from the bottom like this, it needs to be replaced, not patched. A leak can also come from the drain valve or a fitting rather than the tank, so it is worth checking those before assuming the worst.
- Why won't the pilot light on my water heater stay lit?
- Usually the thermocouple has worn out and can no longer hold the gas valve open once you let go of it. The thermocouple is a small sensor that sits in the pilot flame and tells the gas valve the flame is lit. When it fails, the valve shuts the gas off seconds after you release it, even though the pilot lit fine. A weak pilot flame, a draft blowing on it, or a clogged pilot tube can cause the same problem, so a contractor will check all of those before replacing parts.
- Can a tankless water heater be repaired?
- Yes, most problems with a tankless water heater can be repaired rather than requiring a full replacement. Common issues include a failed igniter, a clogged inlet filter, mineral scale built up on the heat exchanger, or an error code pointing to a sensor. Because these units run water through narrow passages, scale buildup is more of an issue in areas with hard water, and flushing the system on a regular schedule helps prevent it. A contractor can read the error code and tell you what part is actually causing the trouble.