Used AC Warehouse. Used Refurbished Air Conditioner Units, Compressors, Package Units and much more!.Kmart has window air conditioners for controlling heat and humidity. Enjoy a more comfortable home with new window AC units..Home > ULTRASOUND UNITS GEL > NOW TIMES STRONGER LG “PRO SERIES” Ultrasound Unit with Carrying Case, Gel, and AC Adapter.Package System. Is a system that contains both the Condenser and the Air Handler in one “Package”. These units sit on the ground or rooftop ouside of your home or business.