Montana HVAC Pros
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Water Heater Repair in Polson, MT

Tell us what your water heater is doing, and a licensed contractor who covers Lake County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
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What Polson winters do to a water heater

Your water heater works long hours from September through June, ten months of the year. On winter nights averaging 20°F, the water coming into the tank is cold, and the burner or heating element has to run longer to bring it up to temperature. That extra runtime wears on the thermostat and heating element in an electric unit, or the burner assembly and igniter in a gas one.

Lake County has recorded 57 damaging wind events and 125 winter storms over the past ten years, and storms like these knock out power. Most tanks come back on by themselves once power returns, but a gas unit with a standing pilot will need it relit by hand. Either way, an outage means no hot water until power is back.

20°F
the average winter night, and colder incoming water means longer heating
10 months
September through June, the months homes here need heat
18%
of Montana households lost power for a day or more in 2024, and a heater with an electric element or electric ignition stops without it
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Your water heater works hardest from October through April.

NOAA nClimDiv, 1991–2020 normals

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A new water heater would cut about $270 a year off hot water for a typical Montana home.

  • A heat pump water heater$100 a year
  • An older electric water heater$370 a year

Estimates for a typical Montana home, compared with an older unit built to the federal minimum, from EIA household energy data and Montana 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 from the inside. Sediment builds up at the bottom of the tank over years, and it wears through the steel and lining underneath it. Once the tank is leaking like this, it needs to be replaced, not patched. Sometimes what looks like a tank leak is actually a loose drain valve or a fitting on the water lines, and a contractor can tell you which one you have.
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 pilot is burning. When it wears out, it shuts the gas off even though the flame is lit. A dirty pilot orifice or a draft in the area can also blow the flame out. A contractor can test the thermocouple and clean or replace what is needed.
Can a tankless water heater be repaired?
Yes, most tankless problems are repairs, not replacements. Mineral buildup on the heat exchanger, a failed igniter, or a clogged inlet screen are all things a contractor can fix without replacing the unit. Replacement usually only comes up when the heat exchanger itself has cracked or corroded through.