Definition & Meaning of "window air conditioner"

What is a "window air conditioner"?

A window air conditioner is a cooling device designed to be installed in a window to cool a room or small area. It works by drawing in warm air from the room, cooling it using a refrigeration system, and then releasing the cool air back into the room. The warm air is vented outside through the window. Window air conditioners are a popular choice for cooling individual rooms in homes or offices, especially when central air conditioning is not available. They are easy to install, energy-efficient, and ideal for smaller spaces.