Water Heater Repair in Waukesha, WI
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Waukesha County winters run your water heater hard
Groundwater coming into your house is already cold when it hits the tank, and from October through May your water heater has to work harder to make up that difference. On nights near 16°F, a gas water heater's burner cycles on more often, and an electric unit's heating elements stay under load longer to hold the same temperature.
That extra cycling is what wears out a thermocouple or an igniter before its time, and what pushes a heating element to fail. You will notice it as water that runs lukewarm instead of hot, or a pilot light that will not stay lit. Waukesha County has seen 18 winter storms and 103 damaging wind events over the past ten years, and a power outage can shut down an electric water heater's controls. Most reset on their own once power is back, but a standing pilot will need to be relit by hand.
- 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 is failing. Sediment builds up on the bottom of the tank over the years, and the steel underneath it corrodes until it gives way. A leak from a fitting or the drain valve up top can be tightened or replaced, but a leak from the tank itself means the water heater needs to be replaced, not repaired. If you see water pooling underneath, shut off the water supply to the tank and have a contractor take a look before it gets worse.
- 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. Once it wears out, it can't hold that signal, so the valve shuts the gas off and the pilot goes dark. Dirt or a weak flame can cause the same thing, but a worn thermocouple is the most common cause and it's a straightforward part to replace.
- Can a tankless water heater be repaired?
- Yes, most problems with a tankless water heater can be repaired without replacing the unit. Error codes, ignition failures, and flow sensor issues are usually traced to a specific part and fixed on the spot. Mineral buildup on the heat exchanger is common too, especially if the unit has never been descaled, and that's a service job rather than a replacement. A contractor can pull the fault code from the unit and tell you exactly what's failing.