Water Heater Repair in Dover, DE
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Kent County winters are hard on a water heater
From October through April your water heater works harder, since the water coming into the tank is colder to start with. On nights that average 28°F, a unit already running near its limit is the one that gives out. That extra strain on the heating element or the thermostat is why repair calls pick up in the cold months.
Power matters too. About 12% of Delaware households were without power for a day or more in 2024, and this county has seen 10 winter storms and 120 damaging wind events over the last ten years. An electric water heater does not restart on its own the way a gas one with a standing pilot does. After an outage, check that yours came back on, especially if the water is running cold with no warning.
- 28°F
- the average winter night, and colder incoming water means longer heating
- 7 months
- October through April, the months homes here need heat
- 12%
- of Delaware 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 $70 a year off hot water for a typical Delaware home.
Estimates for a typical Delaware home, compared with an older unit built to the federal minimum, from EIA household energy data and Delaware 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?
- Most of the time it means the tank itself has rusted through, and once that happens the tank cannot be repaired. Water forms on the inside walls over years, and it finally eats a hole in the steel. It can also be a loose drain valve or a fitting on the bottom that has failed, and those a contractor can fix without replacing the tank. A licensed contractor can tell you which one you have by checking whether the tank itself is wet or just the fittings.
- Why won't the pilot light on my water heater stay lit?
- A pilot that won't stay lit is usually a sign the thermocouple has worn out. That's the small sensor that sits in the pilot flame and tells the gas valve it's safe to keep the gas flowing. When it wears out, it can't sense the flame anymore, so the valve shuts the gas off. It's a normal part to replace and doesn't mean anything else is wrong with the tank. A dirty pilot tube or a draft blowing the flame out can cause the same problem, so a contractor will check both before replacing anything.
- Can a tankless water heater be repaired?
- Yes, tankless water heaters are built to be repaired rather than replaced. The igniter, the flow sensor, and the heat exchanger can each be serviced or swapped on their own. Mineral buildup on the heat exchanger is the most common issue, especially if the unit has never been flushed, and that's a service job, not a replacement. A licensed contractor can run the error code the unit displays and tell you exactly which part is at fault.