Both cold and cool portable air conditioners can provide, there are some portable units use dual refrigerant hoses or they called it as spot portable AC between inside and outside it works and similar manner to a standard split or window air conditioner. There are or have been window type units on wheels which can be placed up to an open window and work in a similar manner to a standard window unit. A portable air conditioner is a portable system cooling engine for self-contain suitable for a single room or used to assist a weak central (HVAC) system. For more cooling needed we have suitable air-cooling units for you.