Water Heater Repair in Mequon, WI
Tell us what your water heater is doing, and a licensed contractor who covers Ozaukee County will get in touch.
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Cold groundwater and long winters wear on your water heater
Water coming into your house in Mequon is cold eight months of the year, October through May, and on nights that average 16°F it takes more work to bring that water up to temperature. That extra runtime wears on the heating element in an electric unit, or the burner and igniter in a gas one. You notice it as water that takes longer to heat back up, or a tank that runs out faster than it used to.
Power matters too. Wisconsin logged 18 winter storms and 30 damaging wind events in Ozaukee County over the past ten years, and statewide, 18% of households went at least 24 hours without power in 2024. A gas water heater with electronic ignition will not relight on its own once power comes back. A standing pilot never needed power to begin with, so an outage will not touch it.
- 16°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 once that happens the tank has to be replaced, not patched. The other cause is a fitting or drain valve leaking above the tank, with water running down the side and pooling at the base, which is a repair, not a replacement. A contractor can tell you which one you have by drying the tank off and watching where the water first shows up.
- Why won't the pilot light on my water heater stay lit?
- The most common reason is a worn thermocouple, the small sensor that tells the gas valve the pilot is burning. When it wears out, it can't confirm the flame, so the valve shuts the gas off even though the pilot lit fine a moment ago. A weak pilot flame or a draft blowing on it can cause the same thing, so a contractor will check the flame itself before replacing any part.
- Can a tankless water heater be repaired?
- Yes, most tankless problems are repairs, not replacements. Error codes usually point to a specific part, like a flow sensor or an igniter, that a contractor can test and swap out. Mineral buildup in the heat exchanger is another common issue, and that gets flushed rather than replaced.


