Used with air conditioning, drying, and ventilation units, plug fans are also known as backward curved fans. A plug fan does not include a scroll, but is designed to distribute air flow evenly. EC plug fans are called electrically commutated fans, which refers to the motor that operates the fan. This type of motor can control the speed needed to produce accurate drying and air circulating performances. These plug fans function on a belt drive package, and we also have belt drive blowers if looking for a similar application. Furthermore, our OEM specialty blowers are equipped for air conditioning, heating and ventilation units.