Once you identify that a leak is still currently happening immediately turn off the.
Gas water heater leaking from top.
Most homes have a dedicated circuit breaker for an electric water heater and some were built with an easily accessible secondary shut off in the vicinity of the heater itself.
Here are a few other possible causes.
If you suspect that you have a leak from the top turn off the power to your water heater.
Using paper towels wipe down the wet areas on the top of your water heater so it s dry.
Rainwater can be blown in from outside.
Rain water when rain water travels down the flue vent pipe of a gas water heater it can collect on the top of your tank.
Under the right conditions rain drops can enter and come down the vent.
Water heater is leaking from pressure relief valve.
Fortunately and to your relief sometimes when your water heater is leaking from the top it may not be because of a malfunctioning or defective part.
Sometimes the pressure relief valve will leak if it was opened for the very first time.
If you have a gas hot water heater leaking from the top one possibility is related to rain.
If your valve is located on the top of your water heater like in the picture below check to see where it s leaking from.
For a gas water heater turn the thermostat control to the off position.
From its base where it screws into the water heater from the piping attached to the t p relief valve and also coming out of the open end of the pipe.
Then observe where the water starts to come from.
Two places it may be leaking from include.