If steam or excessively hot water shoots out of faucets, or you hear boiling sounds inside the hot water heater, the appliance may not be shutting off at its set temperature.

The job of the temperature-pressure (TP) relief valve is to release excessive pressure from steam buildup, but this valve may have been improperly installed, or it may be faulty. Either way, this condition can be dangerous, both because hot water and steam can scald people and because if enough pressure builds up, it could rupture the water heater. Here’s what to do:

1) Turn down the water heater’s temperature setting.

2) Allow the water to cool.

3) Call a water heater repairperson.