Water Heater Repair in Hartsville, SC
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Power blinks and cold nights both take a toll
Darlington County sees its share of rough weather. Ten years of records show 129 damaging wind events and 3 winter storms, and in 2024 close to half of South Carolina households lost power for a full day or more. Most water heaters start back up on their own once power returns, but a storm that flickers the lines more than once, or trips a breaker, can leave the thermostat or heating element in a bad state. You find out when the water runs cold or never gets hot at all.
Winter nights here average 35°F from December through February, and homes need heat from November through March. Colder incoming water means the heater works harder to bring it up to temperature, and that extra load falls on the heating element and thermostat. A unit that is already worn tends to show it this time of year.
- 35°F
- the average winter night, and colder incoming water means longer heating
- 5 months
- November through March, the months homes here need heat
- 45%
- of South Carolina 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 $300 a year off hot water for a typical South Carolina home.
Estimates for a typical South Carolina home, compared with an older unit built to the federal minimum, from EIA household energy data and South Carolina 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 from the inside and is starting to fail. Water heater tanks have a glass lining that protects the steel underneath, and once that lining cracks, rust eats through the metal and leaks start at the bottom or the seams. It can also be a loose drain valve or a fitting that has worked itself loose, which a contractor can check in a few minutes. If the leak is coming from the tank itself, the unit needs to be replaced, not repaired, since there is no way to patch a rusted tank.
- Why won't the pilot light on my water heater stay lit?
- The most common cause is a worn out thermocouple, the small sensor that tells the gas valve the pilot is burning. When it wears out or gets coated in soot, it can't sense the flame and shuts the gas off even though the pilot is lit. A dirty pilot orifice or a draft from a nearby vent can also blow the flame out. A contractor can test the thermocouple and clean or replace the part causing the shutoff.
- Can a tankless water heater be repaired?
- Yes, most problems with a tankless water heater are repairable. Mineral buildup on the heat exchanger is the most common issue, especially if the unit has never been flushed, and it causes hot water to run lukewarm or shut off early. Ignition failures, sensor errors, and clogged inlet filters are also things a contractor can diagnose and fix without replacing the unit. Replacement is usually only needed when the heat exchanger itself has failed.