Water Heater Repair in Castle Rock, CO
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Castle Rock puts a water heater to work most of the year
Water heaters here run hard from September through May, nine months of pulling cold groundwater up to temperature while winter nights average 17°F. That cold snap widens the swing the unit has to cover every time someone runs a shower or starts the dishwasher, and the burner or heating element cycles more to keep up. Over enough winters, that extra cycling wears on the thermostat and the heating element in an electric unit, or the burner assembly and thermocouple in a gas one.
Douglas County has logged 92 winter storms and 97 damaging wind events over the past ten years, and storms like these knock out power. Statewide, 13% of Colorado households lost power for 24 hours or more in 2024. A gas water heater with a standing pilot will keep making hot water through an outage, but one with electronic ignition or an electric unit will not come back on until power is restored. When it does, no hot water is often the first sign something else was already wearing thin.
- 17°F
- the average winter night, and colder incoming water means longer heating
- 9 months
- September through May, the months homes here need heat
- 13%
- of Colorado 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 Colorado home.
Estimates for a typical Colorado home, compared with an older unit built to the federal minimum, from EIA household energy data and Colorado 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 leaking from the inside out. Sediment builds up on the bottom of the tank over the years, and once it eats through the steel, the leak won't stop on its own. It can also be a loose drain valve or a fitting that's failed, which a contractor can check and replace. But water pooling under the tank itself usually means the tank is done and needs to be replaced, not repaired.
- Why won't the pilot light on my water heater stay lit?
- The most common reason is a worn thermocouple, the small sensor that tells the gas valve the pilot is burning. When it wears out, it shuts off gas to the pilot even though the flame is fine. A dirty pilot tube 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 problems with a tankless water heater are repairable. Error codes usually point to something specific, like a flow sensor, an igniter, or buildup on the heat exchanger from hard water. A contractor can diagnose the code and replace the part rather than the whole unit. Regular descaling also prevents a lot of these problems from starting in the first place.