Provided are an installation guide system for an air conditioner and a method of using the same, including a display that displays a user interface for designing an installation for an air conditioner, a memory that stores at least one image for a building, and a controller to control a display of the stored images on the user interface. The user interface may include a first region that displays information with respect to a plurality of recommended configurations of the air conditioner including configuration of plurality of tubes that connect an outdoor unit to at least one indoor unit, and a second region that displays one of the stored images for a building and including a display of the outdoor unit, the indoor unit and the plurality of tubes The displayed image may be configured based on a selected recommended configuration of the air conditioner selected in the first region.