Water Heater Repair in Morristown, TN
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Winter nights here are hard on a water heater
Morristown winters push your water heater harder than most homes notice. Heat runs October through April, and nights average 30°F through the coldest stretch. Colder water coming in means the burner or heating element has to run longer to bring the tank up to temperature. That extra runtime wears on the thermostat and heating element in an electric tank, or the burner assembly and thermocouple in a gas one.
Hamblen County has seen 19 winter storms and 59 damaging wind events over the past ten years, and Tennessee households lost power for at least 24 hours at a similar rate last year. A gas water heater with a standing pilot keeps working through an outage. One with electric ignition will not restart until the power comes back and someone relights it. If that happens on a cold night, the water runs cold and stays that way until the unit is running again.
- 30°F
- the average winter night, and colder incoming water means longer heating
- 7 months
- October through April, the months homes here need heat
- 20%
- of Tennessee 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 $280 a year off hot water for a typical Tennessee home.
Estimates for a typical Tennessee home, compared with an older unit built to the federal minimum, from EIA household energy data and Tennessee 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 the tank itself has rusted through and is starting to fail. Water heaters corrode from the inside over years, and once the tank leaks there is no patching it, the tank needs to be replaced. It could also be a loose drain valve or a fitting at the bottom, which a contractor can check before assuming the worst. Either way, shut off the water and power or gas to the unit and have it looked at soon, since a failing tank can go from a drip to a real leak without warning.
- 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 confirm the flame, so the gas valve shuts off even though the pilot lit fine. A dirty pilot orifice or a draft blowing out the flame can cause the same thing. A contractor can test the thermocouple and replace it, which usually solves it.
- Can a tankless water heater be repaired?
- Yes, most tankless problems are repairable rather than a reason to replace the unit. Common fixes include cleaning a clogged inlet filter, descaling the heat exchanger where hard water has built up scale, or replacing a failed igniter or flow sensor. A contractor can pull the error code the unit is showing and diagnose it from there.