In order to solve EV issues, AI-EV (Air-conditioner Integrated Electric Vehicle) which is integrated with power souce for running an air-conditioner and a vehicle has been proposed. In this paper, the authors have studied the method that is improved the efficiency of air-conditioner and evaluated the performance of AI-EV. As a result, according to improving heat transfer area of a condenser and recuperating an engine exhaust heat, COP (coefficient of performance) is able to increase 1.4 times. Therefore, the cruising range of an AI-EV which is mounted the advanced air-conditioner is able to be extended more than 1.1 times in comparison with a conventional AI-EV.