The drain pan in an air conditioner plays a crucial role in the condensation process. It is located beneath the evaporator coil and collects the water that condenses as the coil cools the air. This water then drains out through the drain line. If the drain pan is damaged, rusted, or cracked, it cannot hold the water properly, leading to leaks. Regular inspection of the drain pan is essential to ensure it is in good condition. For minor cracks, a waterproof sealant can provide a temporary fix, but for severe damage, replacing the drain pan is the best solution. Maintaining the integrity of the drain pan helps prevent water leaks and ensures efficient operation of your air conditioner.