Answer:

Basically a water heater is a big water tank with insulation wrapped around it. cold water will then flow into it and will activate a thermostat. The thermostat will then either kick on an electric heating element inside of the tank or will fire up a gas heating system at the base of the tank. Once the thermostat hits it preset temperature it then turns off the heating coil or burner. the tank is the filled with hot water ready for use out of the hot water pipes.

First answer by Lochekey. Last edit by Lochekey. Contributor trust: 30 [recommend contributor recommended]. Question popularity: 1 [recommend question].