The Mini MAREY Shower Tankless Water Heater is the perfect solution to supply endless hot water a point of. It is also called water heater on demand, because it heats water only when needed, saving energy. As it is installed in the point of use, water is heated immediately when the hot water faucet is opened and there is no heating loss as the heating element is at the point of use, providing instant hot water. Its compact design saves space and is very easy to install, saving also in installation costs. It is the first product MAREY produced, back in 1955.