Water Heater Repair in Duluth, MN
Tell us what your water heater is doing, and a licensed contractor who covers St. Louis County will get in touch.
Tell us about the job
It takes about a minute.
Ten months of cold water wears on your water heater
Duluth homes need heat from September through June, ten months of the year. That means the water coming into your tank is cold for most of it, and the burner or the heating element has to work that much longer to bring it up to temperature. More runtime means more wear on the parts that do that work.
Winter here also brings real storms, 179 of them over the past ten years, along with 284 damaging wind events. When the power goes out, most water heaters come back on by themselves once it's restored. But a tank that sat cold for hours during an outage takes time to catch back up, and you will notice less hot water waiting for you until it does.
- 1°F
- the average winter night, and colder incoming water means longer heating
- 10 months
- September through June, 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 of the time this means the tank itself has rusted through and is failing, not a fitting or valve that can be tightened. Water heaters corrode from the inside as the glass lining wears out over the years, and once the steel underneath starts to go, it leaks and won't seal again. A drain valve or a fitting can sometimes be the real cause, and a contractor can check that before assuming the tank is done. But if the water is coming from underneath the tank itself, replacement is usually the only fix.
- 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 and stopped sensing the flame, so the gas valve shuts it back off as a safety measure. A dirty or clogged pilot orifice can cause the same thing, and so can a draft pulling the flame away from the sensor. A standing pilot doesn't use electricity, so a power outage isn't the cause. A contractor can test the thermocouple and clean or replace it, which usually solves it.
- Can a tankless water heater be repaired?
- Yes, most problems with a tankless unit can be repaired without replacing the whole thing. Mineral buildup on the heat exchanger is common and is cleared with a descaling flush, especially in homes with hard water. Igniters, flow sensors, and venting issues can also be diagnosed and replaced individually. A contractor can tell you after looking at the error code or symptoms whether it's a repair or if the unit has reached the end of its life.