FIELD: transport engineering; ventilation, heating and air-conditioning system in car cabins. SUBSTANCE: heating and ventilation unit has casing where the following parts are arranged in succession: ventilator, heater control damper, heat exchanger, mixing chamber and cabin heating damper. Side walls of casing are provided with sealing members made in form of flanges and fins heater control dampers. Heat exchanger is mounted in lower portion of casing. Mixing chamber has outlet to air ducts for delivery of air to lower portion of cabin, to its transparencies and for ventilation. Air ducts are provided with distributing dampers. Heater control damper and cabin heating damper are made in form of through. Innovation of invention consists in matching the axis of rotation of heater control damper with axis of rotation of cabin heating damper. EFFECT: reduced aerodynamic resistance of gas lines, thermal losses and overall dimensions. 6 dwg
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