Water Heater Repair in Nashville, TN
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What Davidson County winters do to your water heater
Your water heater works harder from October through April, seven months of the year, when the water coming into the tank is colder and the burner or element has to run longer to bring it up to temperature. On nights that average 31°F, a tank sitting in a garage or basement loses heat faster too, so it cycles more just to hold what it's already heated.
Davidson County has had 462 damaging wind events and 10 winter storms over the past ten years, and outages follow storms like that. A gas water heater with a standing pilot will not fire back up on its own after the power drops, it needs that pilot relit by hand. If you come home to lukewarm or cold water after an outage, that is usually why.
- 31°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. The tank holds water all day and every day, so once corrosion works through the steel wall, water finds its way out at the lowest point. A loose drain valve or a fitting can also leak and looks the same at first glance. A contractor can tell you quickly which one it is, and if it's the tank, replacement is the only fix.
- Why won't the pilot light on my water heater stay lit?
- The thermocouple is the usual cause. It's the small sensor that sits in the pilot flame and tells the gas valve the flame is lit. Once it wears out or sits out of position, the valve shuts the gas off as a safety measure, even though you just relit the pilot. A dirty pilot orifice or a draft blowing on the flame can cause the same thing, so a contractor will check both before replacing anything.
- Can a tankless water heater be repaired?
- Yes, most problems with a tankless unit are repairable. Mineral buildup on the heat exchanger is common and is cleared with a descaling flush, especially where water is hard. Igniters, flow sensors, and exhaust vents can all be replaced on their own without replacing the unit. A contractor can run the error code on the display to point straight at the part that failed.