The Piccolo unit is designed to be mounted above the stove in flats and apartments. The unit is equipped with a control that regulates the fan speeds, the rotating heat exchanger and the after heater. Desired fan speed is chosen on the cooker hood or on a separate operating panel. The unit is also equipped with automatic defrosting of the rotating heat exchanger and a possibility to connect a condense drain. The air from the cooker hood is lead past the heat exchanger. Therefore we recommend that a separate extract air vent be installed in the kitchen so heat recovery can be acquired.