Water Heater Repair in San Jose, CA
Tell us what your water heater is doing, and a licensed contractor who covers Santa Clara County will get in touch.
Tell us about the job
It takes about a minute.
Power gaps here can leave you without hot water
Santa Clara County logged 257 damaging wind events over the past ten years, along with a handful of winter storms. Statewide, 17% of households went at least 24 hours without power in 2024. A gas water heater with an electronic igniter or control board won't fire without power, even though there's fuel to burn. One with a standing pilot keeps working through the outage, but the pilot itself can blow out and need relighting.
Most tanks bring themselves back once power returns. If yours doesn't, that's worth a look before you assume the unit itself has failed.
- 39°F
- the average winter night, and colder incoming water means longer heating
- 7 months
- November through May, 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?
- Most often the tank itself has rusted through from the inside and is starting to fail. Water heaters corrode from the inside out over the years, and once the tank wall gives way, no fitting or valve tightens the leak away. It can also be the drain valve or a fitting that has loosened, which a contractor can check before assuming the tank is done. If the leak is coming from the tank itself, the water heater needs to be replaced, not repaired.
- Why won't the pilot light on my water heater stay lit?
- The thermocouple is usually the reason. It sits in the pilot flame and tells the gas valve to keep sending gas. Once it wears out or gets coated in soot, it reads the flame as out even when it is lit, and the valve shuts the gas off. A dirty pilot tube or a draft blowing on the flame can cause the same thing, so a contractor will check both before replacing the part.
- Can a tankless water heater be repaired?
- Yes, most tankless water heater problems are repairable. Mineral buildup on the heat exchanger, a failed igniter, or a clogged inlet filter are common issues and none of them mean the unit needs to be replaced. Tankless units also run diagnostic codes that point a contractor straight to the part causing trouble, which usually makes the repair more direct than guesswork.