AHWGo type supply/exhaust unit with heat recovery belongs to the group of devices intended mainly for a single-storey buildings with special taking into consideration those in which installation of ducts due to technological considerations is impossible or undesirable. The unit consists of two parts: internal and external. The construction of external part bases on the framewoirk made of aluminum profiles. The casing consists in the “sandwich” type panels filled with the 45 mm thick mineral wool. Whereas internal part is the self-supporting construction. Series of types include 2 sizes with efficiency from 2000 to 9000 m3/h. Air processing is limited to the filtering, heating and cooling with using the ice water exchanger. Main advantage of this unit type is heat recovery on the cross-flow exchanger. Applied rotational diffuser enables the regulations of air stream range.