The device has pipelines for sucking air from a church room and outer space, respectively. Sensors are placed after a blower for measuring temperature and humidity of an organ wind. Valves (3, 4) are controlled such that the temperature of the air after the blower lies maximum 1 Kelvin above the organ temperature. The air sucked from outer space is dehumidified if the air humidity measured by the sensors is greater than 75 percentages. Independent claims are also included for the following: (A) a method of supplying organ wind (B) an organ including a device for supplying organ wind.
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