Dock Fans Ask An Expert Request a Quote Request Service Or give us a call: 1-888-606-9415 Dock fans increase comfort and productivity by forcing fresh air into a trailer, thereby replacing hot, cold or stuffy air. On a hot summer day, the inside of a truck trailer can easily reach temperatures above 100 degrees. It is therefore paramount to ensure that your personnel are safe and comfortable as they load and unload material. The dock fans we sell maximize air circulation, providing a cooler and more enjoyable atmosphere around your loading dock. They are also built to withstand impact from passing forklifts due to their flexible arms. Our best dock fans from APS are strong enough to cycle out the air from a 53 foot trailer in under four minutes.