Water Heater Repair in Duncan, OK
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What Duncan winters do to a water heater
Water heaters in Duncan work harder from November through April, when incoming groundwater runs cold and the burner or heating element has to make up more ground to hit the same set temperature. On nights that average 31°F, a gas water heater in a garage or an unheated closet can lose heat fast enough that the burner cycles on more often just to hold steady.
Stephens County has seen 67 damaging wind events and 6 winter storms over the past ten years, and a quarter of Oklahoma households lost power for at least 24 hours in 2024. When power drops, most electric water heaters come back on by themselves once it returns, but a unit that was already struggling can trip its high limit switch or fail to relight. If your water isn't as hot as it used to be, or it runs out faster than it did a few months ago, that is often the cold water and the extra cycling catching up with a part that was already worn.
- 31°F
- the average winter night, and colder incoming water means longer heating
- 6 months
- November through April, the months homes here need heat
- 25%
- of Oklahoma 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
- Why is my water heater leaking from the bottom?
- The tank itself has likely rusted through from the inside. Water heaters corrode from the inside out over the years, and once the tank wall gives way, the leak shows up underneath the unit. It can also be a loose drain valve or a fitting, so it's worth checking those before you assume the worst. If the tank is the source, it needs to be replaced, not repaired, because there's no way to patch rusted steel.
- Why won't the pilot light on my water heater stay lit?
- The most common cause is a worn thermocouple or flame sensor that can't tell the pilot is lit, so it shuts the gas off. A draft blowing across the pilot can also blow it out, and a dirty pilot orifice can starve the flame. A standing pilot doesn't use electricity, so a power outage isn't the cause. If it keeps going out after you relight it a few times, the part needs to be replaced.
- Can a tankless water heater be repaired?
- Yes, most tankless problems are repairs, not replacements. Mineral buildup on the heat exchanger, a failed igniter, or a clogged inlet filter are common causes and each one can be cleaned or replaced on its own. A contractor can flush the unit and test the parts to find out which one is causing the trouble.

