Abstract: A ventilation and temperature control apparatus for a vehicle has means for producing two different temperature airflows. Valves regulate the mixing of the flows and direct the mixed flows to upper and lower outlets, the valves being controllable interdependently and at least one also being controllable independently. Rotary valves are employed, simplifying sealing problems and also allowing the provision of shaped closure edges to improve control of the flows at small opening settings. A further feature is the provision of means for controlling the temperature of an evaporator for cooling one of the two different temperature airflows to limit dehumidification at higher temperature levels.