A method of using an installation guide system to configure an air conditioner or HVAC arrangement is provided. The installation guide system may include an input configured to receive inputs from a user; a memory configured to store information; a display; and a controller configured to control the input, the memory, and the display. The method may include receiving input, into the installation guide system, of installation information to be used to configure the air conditioner or HVAC arrangement; displaying on a drawing display of the display at least one image of an installation space for the air conditioner or HVAC; configuring the installation information with respect to the at least one image of the installation space; arranging apparatuses constituting an air conditioner or HVAC on the drawing display to create a design drawing for an air conditioner or HVAC arrangement based on the installation information; and inspecting the air conditioner or HVAC arrangement for errors.