Abstract: There is described a device for cleaning of a climate conditioner indoor part (1), where a form stable enclosure box (6) forms a tight chamber around the indoor part (1) and is arranged to be able to be supplied with air at a pressure of 8-12 bar via a compressed air device (13) as a compressed air pipe (10) is provided with an opening and closing valve (15) arranged to be able to affect a high, pulsating air speed and reduced air flow, and is also provided with a suction device (14) having a capacity exceeding the amount of supplied air for thereby to provide an underpressure. Also described is a method for cleaning of a climate conditioner indoor part (1).