The 9000 btu per hour quick coupling wall mounted air conditioner unit provides cooling and heating, for year round climate control. Features include led display, auto-restart function, sleed mode and active carbon filter. Please note : the exterior unit should be combined with 6308085 (9000 btu interior unit) to create a 9000 btu split air conditioning unit. cooling and heatingauto-restart functionled displaysleep modea energy rating