The Mr. Heater Portable Buddy Power Fan helps ice anglers circulate warmth throughout their fishing shelters without relying on batteries or external power. This lightweight heater fan uses a thermoelectric generator that converts heat from your Portable Buddy heater into electricity to power itself. The fan draws air in and pushes it outward, helping distribute warmth more effectively by combining radiant heating with convection airflow. It clips directly onto compatible MH9BX Portable Buddy Heaters manufactured after 2009 for quick, hassle-free installation. From early mornings on the ice to chilly days at fishing camp, this heat-powered fan helps make the most of your Buddy heater's warmth. Heat-powered operation requires no batteries Thermoelectric generator uses heater warmth to power the fan Compatible with MH9BX Portable Buddy Heaters made after 2009 Lightweight construction with easy clip-on installation Air intake and outward airflow help circulate warmth Combines radiant heat with convection airflow for improved heat distribution Manufacturer's one-year limited warranty