Water Heater Repair in Mountain Home, ID
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Long winters and outages both put strain on your water heater here
Mountain Home needs heat from September through June, ten months of the year. That means the water heater is working most months, not just in the coldest stretch. Winter nights average 21°F from December through February, and the burner or heating element has to work harder to keep up when it's that cold outside.
Power is the other issue. In Idaho, 11% of households went at least 24 hours without power in 2024, and Elmore County has logged 84 winter storms and 36 damaging wind events over the past ten years. A gas water heater with a standing pilot keeps heating through an outage. One with an electric igniter won't relight until power is back. An electric water heater stops heating until the power returns, then most start back up on their own. Either way, you notice it the same way. The water runs lukewarm, then cold.
- 21°F
- the average winter night, and colder incoming water means longer heating
- 10 months
- September through June, the months homes here need heat
- 11%
- of Idaho 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 Idaho home.
Estimates for a typical Idaho home, compared with an older unit built to the federal minimum, from EIA household energy data and Idaho 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?
- The tank has likely rusted through from the inside and is starting to fail. Sediment builds up at the bottom of the tank over years and eats away at the steel underneath, and once it wears through, the leak will not stop or seal itself. A cracked drain valve or a loose fitting can also drip from the bottom, and those are worth checking before you assume the tank itself is gone. A leaking tank needs to be replaced, not patched, since the tank cannot be repaired once it has rusted open.
- 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 stops sensing heat correctly and shuts the gas off even though the pilot is lit. A dirty pilot orifice or a draft blowing out the flame can also cause this, and a weak gas valve is possible too. A contractor can test the thermocouple and valve directly to find which one is at fault, since guessing between them from the symptom alone is not reliable.
- Can a tankless water heater be repaired?
- Yes, most tankless water heater problems are repairable. Common issues are a fouled heat exchanger from mineral scale, a failed igniter, or an error code from a flow sensor, and each of these can be serviced or replaced on its own without replacing the unit. Because Elmore County water heaters run gas more often than not, a contractor working on a tankless unit here is usually dealing with a gas model, and diagnosing the exact fault takes checking the unit's error code and its venting and gas supply.