The WHR930 heat recovery unit was developed for use in "balance ventilation systems" in homes. In these systems, used air is extracted in kitchen, bathroom, toilet and any other rooms. Fresh outside air is supplied to areas such as living rooms and bedrooms. Air output is 350 m3/h at 240Pa. EPC gains up to 0.28! Heat is transferred between the extract and supply air. Type WHR 930 RF is available for wireless control of the unit. The WHR 930 comes standard with preheater (frost-free element) and 100% bypass. The WHR 930 basic can be operated with a three-position switch. A 3-position switch with failure filter indication (SAI Flash 1-3V) can also be chosen. With the radio control (type RF), the unit can be operated wirelessly.