The Ventilation system ECO 3500 DH With an output of 3500 m³ and a temperature efficiency of up to 98.2%, offers efficient and energy -conscious ventilation. Thanks to the space -saving design, assembly on the ceiling is easily possible. The generously dimensioned counter -current exchanger ensures impressive heat recovery. By default, a high -quality aluminum exchanger is installed, optionally a plastic exchanger can also be selected. The ventilation device is characterized by low back pressure and high energy efficiency. Decoupled fans guarantee a low-noise and vibration-free operation in a heat-insulated housing. The continuously continuous adjustment enables precise adjustment of the ventilation to individual needs. An advanced control with CO2 measurement values or moisture levels i.