Water Heater Repair in Oshkosh, WI
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Eight cold months mean your water heater never really rests
Groundwater coming into your house is cold from October through May, eight months of the year. Your water heater has to work harder and longer to bring it up to temperature, and that extra runtime wears on the burner or the heating element long before the tank itself gives out.
Power outages add to the strain. Statewide, 18% of Wisconsin households went at least 24 hours without power in 2024, and Winnebago County has seen 21 winter storms and 54 damaging wind events over the past ten years. Gas water heaters with a standing pilot stay lit through an outage. Most others relight on their own once power is back. If yours does not, or hot water is slow to return afterward, that is worth a look.
- 13°F
- the average winter night, and colder incoming water means longer heating
- 8 months
- October through May, the months homes here need heat
- 18%
- of Wisconsin 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 $40 a year off hot water for a typical Wisconsin home.
Estimates for a typical Wisconsin home, compared with an older unit built to the federal minimum, from EIA household energy data and Wisconsin 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 this means the tank itself has rusted through and is on its way out. Sediment builds up at the bottom of the tank over the years, and once it eats through the steel, water finds its way out. It can also be a loose drain valve or a fitting, which a contractor can check in a few minutes. If the tank is the source, it needs to be replaced, not patched, since a tank won't hold once it's breached.
- Why won't the pilot light on my water heater stay lit?
- The most common cause is a worn thermocouple, the small sensor that tells the gas valve the flame is lit. Once it wears out, it shuts the gas off even though the pilot is burning fine, so the flame keeps going out. A dirty pilot tube or a draft in the area can cause the same thing. A contractor can test the thermocouple and replace it if that's the problem, and a standing pilot like this uses no electricity, so it isn't affected by a power outage.
- Can a tankless water heater be repaired?
- Yes, most problems with a tankless unit can be fixed without replacing the whole thing. Mineral buildup on the heat exchanger is common and is cleared with a descaling flush. Igniters, flow sensors, and venting issues can also be repaired on their own. Whether repair makes sense for your unit is something a contractor can tell you once they've looked at it.