Run the hot water inside the rv until it turns cold.
How to drain rv water heater.
Run the hot water inside the rv until it runs cold.
Turn off the city water supply if you are hooked up to it.
Check out the picture below to see the water heater that we removed out of the rv that we had to fix.
Outside of the rv open the panel to the water heater.
Disconnect the hot water.
Open the pressure valve and adjust the wrench to loosen the plastic drain plug.
Below is a picture of a water heater from the outside with the cover off.
This is to ensure that the water inside the water heater is.
Turn off the water heater lp gas and water pump.