An air-conditioning apparatus for a vehicle includes an air-conditioning duct that includes an air supply path through which air to be supplied into an interior of the vehicle passes, a first tank to which a cool medium and a warm medium for adjusting the temperature of a first intermediate medium are supplied, a first heat exchanger that is provided in the air-conditioning duct and through which the first intermediate medium circulates from the first tank, and a controller that controls the first intermediate medium to a temperature needed to set the interior to a desired temperature.