Water Heater Repair in Alexandria, VA
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What winter in Alexandria does to your water heater
Cold groundwater runs into your house from December through February, on nights that average 29°F, and your water heater has to work harder to bring it up to temperature. That extra run time adds up over the seven months a year homes here need heat, and it wears on the heating element or burner assembly sooner than it would somewhere warmer.
Power is part of the picture too. Alexandria has seen 8 winter storms and 31 damaging wind events over the past ten years, and in Virginia, 22% of households went at least 24 hours without power in 2024. A gas water heater with a standing pilot keeps working through an outage. One with electronic ignition will not relight on its own once power comes back. If yours has been cold since the lights went out, that is usually why.
- 29°F
- the average winter night, and colder incoming water means longer heating
- 7 months
- October through April, 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 from the inside and is starting to fail. Sediment builds up at the bottom of the tank over years of use, and it slowly corrodes the steel until water finds a way out. It can also be a loose drain valve or a fitting that has failed, which a contractor can check before assuming the tank is done. Once the tank itself is leaking, it needs to be replaced, not repaired.
- Why won't the pilot light on my water heater stay lit?
- Usually the thermocouple has worn out and can no longer sense that the pilot is lit, so the gas valve shuts it off. A weak or dirty pilot flame can also fail to heat the thermocouple enough to keep it working. Sometimes a draft in the area around the water heater blows the flame out before it can catch. A contractor can test the thermocouple and replace it, since it's a simple part that wears out over years of use.
- 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 clogged inlet filter, a buildup of mineral scale on the heat exchanger, or a failed sensor, and each of these can be cleaned or replaced. Because tankless units run on electronic controls, a contractor can usually pull an error code from the display to pinpoint what's wrong. A contractor can look at the unit and price the repair for that specific system.