Water Heater Repair in Chaska, MN
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Chaska winters make a water heater work harder
Groundwater coming into your house is already cold when it reaches the tank, and from October through May your water heater has to work against that the whole time. With winter nights averaging 9°F, the burner or heating element runs longer and more often to keep up. That extra run time wears on the thermostat and the heating element in an electric tank, or the thermocouple and burner assembly in a gas one.
Carver County has seen 51 damaging wind events and 36 winter storms over the past ten years, and storms like that knock out power. Most tanks come back on by themselves once power returns, but a pilot light on an older gas unit may need to be relit by hand. If your water heater is not producing hot water after an outage, that is often the reason.
- 9°F
- the average winter night, and colder incoming water means longer heating
- 8 months
- October through May, the months homes here need heat
- 13%
- of Minnesota 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 $50 a year off hot water for a typical Minnesota home.
Estimates for a typical Minnesota home, compared with an older unit built to the federal minimum, from EIA household energy data and Minnesota 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 often the tank itself has rusted through. Sediment builds up on the bottom of the tank over years and eats away at the steel from the inside. Once it corrodes enough to leak, the tank has to be replaced, not patched. Water at the bottom can also come from a loose drain valve or a fitting above that is dripping down the side, so it is worth checking those before assuming the worst. A contractor can tell you in a few minutes which one you have.
- Why won't the pilot light on my water heater stay lit?
- The most common cause is a worn thermocouple. That is the small sensor that tells the gas valve the pilot is burning, and when it wears out it can no longer hold the valve open, so the flame goes out. A weak gas supply or a draft in the flue can also blow the pilot out. If yours is a newer sealed unit with an electronic igniter instead of a standing pilot, the problem is more likely a flame sensor or control board, and it needs a contractor to check.
- Can a tankless water heater be repaired?
- Yes. Most problems come down to a few parts. The igniter can fail, the flow sensor can go bad, or the heat exchanger can scale up with mineral deposits from the water. A contractor can flush the unit, clean or replace the sensor, or swap the igniter, and most of these jobs do not mean replacing the whole unit. If the heat exchanger itself has failed, that is a bigger repair, and a contractor can tell you which one you are looking at.