Solar Attic Fan - 60-Watt with 25-Year Warranty! Most Powerful Solar Attic Fan Available 60-Watt up to 1995 CFM for up to 3255 Sq. Ft. 25-year Manufacturer Warranty on Motor, Housing, and Solar Panel. Top Choice of Contractors. Easily installs in as little as 2-hours. Remote Mounted 60-watt Solar module - Entire Unit Comes With 25-year Manufacturer's Warranty.