Main character of this unit is energy saving and the efficiency, it could be equipped with heat recovery rotor or heat exchanger. By using the temperature difference of indoor and outdoor air, air to air heat exchanger pre cool or pre heat the fresh air through the exhaust of indoor treated air. It not only greatly reduces heat load and energy use, but also allows improving the indoor air quality by increase fresh air change rate. Mainly use of Wheel Type (with contact) and plate type (w/o contact)
