Everstar air conditioner is a line of portable air conditioners that can be used in any room in the house because they are mounted on coasters that allow them to be moved wherever needed. Portable air conditioners use a fan to suck the air from a room, pass it through the compressor and release it back into the room, at a cooler temperature. Heat generated at the back of the device is taken outside through a hose rather than being re-circulated throughout the room. Portable air conditioners are ideal solutions for small to medium-sized rooms, since they are not as effective in rooms with high ceilings or larger room.