Enthalpy heat exchanger for the central ventilation units 180 and 280 for replacing the cross-counterflow heat exchanger in the winter months. Highly efficient, moisture-transferring counterflow heat exchanger with selective plastic membrane film. This membrane of the heat exchanger allows the moisture from the exhaust air to be recovered and transferred to the supply air, which means that the low relative humidity in rooms can be increased in the winter months. No transfer of gases and impurities, long service life, high tightness, low pressure loss, antimicrobial, frost and heat resistant.
