To provide an air conditioner, which can be smoothly moved when it is necessary, but is not carelessly moved in use.

An air conditioner body 1 comprises a wheel base 14 having wheels 16 thereunder such that the wheel base 14 is slidable with respect to the body 1 in the longitudinal direction thereof and guiding portions 12 having inclined surfaces 13 formed on the lower surface thereof. The wheel base 14 comprises inclined portions 15 to that the wheels 16 appear from under the body 1 or disappear into thereunder as the wheel base 14 slides with respect to the body 1.