For non-hygroscopic materials (like Polyethylene, Polypropylene and PVC), simple headed air can remove surface moisture from pellets. For these applications, compressed air drying and desiccant drying is not necessary.

Hot Air Dryers are a simple system consisting of a heater, a blower, a temperature controller, and a filter. This system is typically paired with a drying hopper for effective drying of non-hygroscopic resins. The system can also be used for pre- or post-drying of hygroscopic resins that have been, or will be thoroughly dried by a desiccant dehumidifying dryer.

Using a modular design, the HAD system can be easily configured to work with various plant layouts and drying configurations.