- Efficiently cool your space with up to 15 hours of cooling on just one charge. With its three airflow speeds and heavy duty motor, the AKAI AK-DAC75 MECHANICAL AIR COOLER 75L is designed to be both powerful and quiet, making it perfect for everyday use. The front control keys and included ice box provide ease of use and the wheels allow for simple movement, making this air cooler a must-have for any home or office. Choose from multiple colours to find the perfect fit for your space.