Caravan Electric Water Heater

water heater
a heater and storage tank to supply heated water
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.
An appliance for supplying hot water for purposes other than space heating or pool heating.

electric
(of a situation) exceptionally tense; "an atmosphere electric with suspicion"
An electric train or other vehicle
using or providing or producing or transmitting or operated by electricity; "electric current"; "electric wiring"; "electrical appliances"; "an electrical storm"
a car that is powered by electricity

caravan
travel in a caravan
A covered horse-drawn wagon
A vehicle equipped for living in, typically towed by a car and used for vacations
a procession (of wagons or mules or camels) traveling together in single file; "we were part of a caravan of almost a thousand camels"; "they joined the wagon train for safety"
van: a camper equipped with living quarters
A covered truck; a van