The silencer is our most popular outdoor-rated air blower for one simple reason. It’s quiet! turn on your silencer day or night, and you won’t disturb the neighbors or ruin your relaxing spa experience. The secret is the unique rubber motor mount which encases the fan housing while allowing the motor to vibrate freely on a flexible rubber base. In addition, the air enters in through the bottom of the blower creating a tortuous path for both air and sound. This combination eliminates the noise so well that most pool builders choose the silencer over any other outdoor rated air blower