This paper explores a novel method for enhancing the energy efficiency of air conditioning (AC) systems by converting the mechanical energy from the external fan into electrical energy using a DC motor. By harnessing this often wasted rotational energy, the system generates usable power, which can be stored and utilized to reduce overall energy consumption. Our experimental setup demonstrates that at typical wind speeds (5-10 m/s), the system can effectively generate power to charge batteries, contributing to potential energy savings. Additionally, a prototype using a smaller fan validated the concept by generating sufficient voltage for charging lightweight devices, like smartphones. The proposed approach offers a scalable and environmentally friendly solution that could be integrated into existing AC units or new HVAC models, providing significant economic and environmental benefits.