Water Heater Fan

water heater
Water heating is a thermodynamic process using an energy source to heat water above its initial temperature. Typical domestic uses of hot water are for cooking, cleaning, bathing, and space heating. In industry, both hot water and water heated to steam have many uses.
a heater and storage tank to supply heated water
An appliance for supplying hot water for purposes other than space heating or pool heating.

fan
A person who has a strong interest in or admiration for a particular sport, art form, or famous person
a device for creating a current of air by movement of a surface or surfaces
make (an emotion) fiercer; "fan hatred"
strike out (a batter), (of a pitcher)