Water Heater Repair in Miles City, MT
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Nine months of hard use, then a hard freeze
Your water heater works from September through May here, and on winter nights that average 11°F it has to work harder to keep the tank up to temperature. That extra cycling wears on the heating element and the thermostat that controls it, and over enough cold months a tank that used to keep up starts running out of hot water sooner in the shower.
Custer County sees its share of winter storms and wind, and Montana households lost power for a day or more often enough in 2024 that it is worth knowing your water heater's habits. Most tanks fire back up on their own once power returns, but a pilot light on an older unit may need to be relit by hand.
- 11°F
- the average winter night, and colder incoming water means longer heating
- 9 months
- September through May, 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
NOAA nClimDiv, 1991–2020 normals
A new water heater would cut about $60 a year off hot water for a typical Montana home.
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 often it means the tank itself has rusted through and is starting to fail. Sediment builds up on the bottom of the tank over years, and it traps moisture against the steel until it corrodes a hole. It can also be a loose drain valve or a failed pressure relief valve, both of which a contractor can replace without touching the tank. Once the tank itself is leaking, though, it needs to be replaced, not repaired.
- 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. If the thermocouple is the problem, a contractor can usually replace just that part rather than the whole valve.
- Can a tankless water heater be repaired?
- Yes, most problems with a tankless unit are repairable. Mineral buildup on the heat exchanger is the most common issue, and it causes error codes, weak flow, or water that won't get hot. A contractor can flush the unit to clear scale, or replace parts like the flow sensor or igniter if those have failed. The heat exchanger itself is the expensive part to replace, so a contractor will check that first before deciding what the unit needs.