Water Heater Repair in San Diego, CA
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San Diego County water heaters run into a different problem
Most of the county doesn't get the hard freezes that kill water heaters elsewhere. What San Diego gets instead is the power going out. In 2024, 17% of California households were without power for 24 hours or more at some point, and the county has logged 370 damaging wind events over the past ten years. When the power drops, a gas water heater with an electronic igniter won't relight on its own, and an electric water heater simply stops until service is restored.
Most homes here don't run heat much outside of November through April, so the water heater is often the one appliance working hard year round to keep up with hot water demand. That steady use adds up on the tank and its heating element or burner assembly, and a unit that's been quietly wearing down can fail right when a storm knocks the power out.
- 41°F
- the average winter night, and colder incoming water means longer heating
- 6 months
- November through April, the months homes here need heat
- 17%
- of California 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 $110 a year off hot water for a typical California home.
Estimates for a typical California home, compared with an older unit built to the federal minimum, from EIA household energy data and California 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?
- The most common cause is the tank itself has corroded through and is failing from the inside. Sediment builds up on the bottom of the tank over years, and it traps moisture against the steel until it rusts a hole. Water can also drip down from a fitting higher up, like a loose inlet connection or the temperature and pressure relief valve, and pool at the bottom where you see it. If the tank itself is leaking, it needs to be replaced, not repaired. A contractor can check the fittings first to rule out a simpler fix before condemning the tank.
- Why won't the pilot light on my water heater stay lit?
- Usually the thermocouple has worn out and can no longer hold the gas valve open once you let go. The thermocouple is a small sensor that sits in the pilot flame and tells the gas valve the flame is lit. When it wears out or sits out of position, the valve shuts the gas off seconds after you release it, even though the flame looked fine. A weak or drafty pilot, a dirty pilot orifice, or a failing gas valve can cause the same symptom. A standing pilot does not run on electricity, so power outages are not the cause. This is a gas control repair and should be handled by a licensed contractor.
- Can a tankless water heater be repaired?
- Yes, most tankless water heater problems are repairable. Common issues are a buildup of scale on the heat exchanger, a failed ignitor or flame sensor, a clogged inlet filter, or an error code pointing to a specific sensor. Scale buildup is especially common because tankless units heat water on demand and mineral deposits collect fast without regular flushing. A contractor can pull the error code and diagnose which part has failed before recommending a repair over a replacement.