Water Heater Repair in San Antonio, TX
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Bexar County water heaters answer for a lot
San Antonio water heaters run all year, since there are only a few cold months to ease up on them. That steady demand wears on the anode rod and the heating element, and in tanks that sit long enough, sediment builds up on the bottom and scorches the burner or the lower element until it fails.
Storms complicate things too. Wind events hit this area often enough that the power goes out sometimes, and when it does, an electric water heater stops heating until it's back. Most units come back on by themselves once power returns, but if yours doesn't, or the pilot won't stay lit after an outage, that's worth a look.
- 43°F
- the average winter night, and colder incoming water means longer heating
- 5 months
- November through March, the months homes here need heat
- 33%
- of Texas 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 $290 a year off hot water for a typical Texas home.
Estimates for a typical Texas home, compared with an older unit built to the federal minimum, from EIA household energy data and Texas 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?
- Water pooling under the tank usually means the tank itself has rusted through and is cracking from the inside. Once that happens it can't be patched, and the tank needs to be replaced. A few other things can look the same from the floor, like a loose drain valve, a failed temperature and pressure relief valve, or fittings sweating from condensation. A contractor can tell within a few minutes which one you're dealing with, since only the cracked tank means replacement.
- Why won't the pilot light on my water heater stay lit?
- Most often the thermocouple has worn out and can no longer sense that the pilot is burning, so the gas valve shuts it off. A dirty or clogged pilot orifice can cause the same thing. A weak thermocouple is a simple, inexpensive fix. If the pilot lights fine but won't stay lit even after you hold the button down the full time, that points to the thermocouple specifically.
- Can a tankless water heater be repaired?
- Yes, most tankless problems are repairable. Mineral buildup on the heat exchanger, a failed igniter, a clogged inlet filter, and sensor errors are all common issues a contractor can fix without replacing the unit. Flushing the system to clear scale is routine maintenance that solves a lot of the flow and temperature complaints tankless owners run into. Replacement usually only comes up when the heat exchanger itself has failed.