Economic and ecologic at the same time. The Ecodan air / water heat pumps by Mitsubishi Electric combine highest efficiency and easy handling in an innovative heating system which brings unique advantages. Ecodan air / water heat pumps normally generate about 75% of all energy needed directly from the environment – free of cost and regenerative. Only 25% of the overall energy is needed as electricity for the operation of the heat pump. This means that with a professional layout and dimensioning only one kilowatt power supply can deliver up to four times as much of heating power.