Montana HVAC Pros
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Water Heater Repair in Dillon, MT

Tell us what your water heater is doing, and a licensed contractor who covers Beaverhead 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 Dillon winters do to a water heater

Groundwater coming into your house is already cold, and on nights that average 12°F from December through February, your water heater has to work harder to bring it up to temperature. It runs longer and cycles more to keep up, and that extra work falls on the heating element or the gas valve and burner assembly, whichever kind you have. Over time that shows up as a shorter supply of hot water, or water that never gets as hot as it used to.

Beaverhead County has seen 71 winter storms and 83 damaging wind events over the past ten years, and storms like that knock out power. Statewide, 18% of Montana households lost power for 24 hours or more in 2024. An electric water heater will not heat water until the power is back, though most come back on by themselves once it is. A gas water heater with a standing pilot keeps running through an outage since the pilot does not need power at all, but if yours has an electronic ignition, it will stay out until the power returns and someone relights it.

12°F
the average winter night, and colder incoming water means longer heating
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

Why is my water heater leaking from the bottom?
Most often the tank itself has rusted through and is holding water it can no longer contain. This happens as the tank ages and the lining wears down inside, letting the steel underneath corrode. It can also be a loose drain valve or a fitting that has failed, which is worth checking before assuming the worst. Once the tank itself is leaking, it needs to be replaced, not patched, since the corrosion only spreads from there.
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 can't sense the flame properly, so the valve shuts the gas off as a safety measure. A dirty pilot orifice or a draft in the area can cause the same thing. A contractor can test the thermocouple directly and replace it if that's the cause.
Can a tankless water heater be repaired?
Yes, most tankless problems come down to a part that can be replaced rather than the whole unit. The igniter, the flow sensor, and the heat exchanger are the parts that fail most often, and each can usually be serviced on its own. Mineral buildup from hard water is another common issue, and flushing the unit clears it. A contractor can run a diagnostic to find which part or issue is behind the problem you're seeing.