Hybrid window/split air treatment appliance

The invention includes arrangements to substantially improve customer benefits in window air conditioning and at the same time to reduce assembly and installation requirements and operating noise for a cooling and/or ventilating air treatment appliance. The invention includes a saddle air conditioner. The saddle air conditioner includes a remote unit having a first channel extending from a back of the remote unit. The saddle air conditioner also includes a local unit having a second channel extending from a back of the local unit. The first channel and the second channel overlap to form a bridge disposed between the remote unit and the local unit.