The Portacool Classic models all use a fan belt to run the powerful fan. Unfortunately, over time, the belt will wear out and need to be replaced with a new belt to keep your cooler up and running at its peak efficiency. Shop.portacool.com has the full range of certified replacement fan belts for all of the Classic evaporative cooler models from Portacool. If you're in need for a brand new replacement fan belt for your evap cooler, shop through us to get a certified and high quality belt that will easily fit and take the place of your old worn out belt. Contact us if you have questions about our fan belts or which one would be best for your cooler.