The invention relates to a facility for disinfecting bedding items, in particular mattresses or cushions, the facility (30) including:a device (38) for generating microwaves which is capable of being selectively activated in order to expose the bedding item to microwave radiation, the power of which is 40 kW to 100 kW,a member (66) for controlling the microwave-generating device (38), programmed to activate the microwave-generating device (38) for an exposure time suitable for maintaining the central layer of the bedding item at a temperature of more than 70° C. for a predetermined period of time that is longer than 45 seconds.