Invisco Information

Invisco has the world's largest selection of whole house fans with CFM performance from 1200 up to over 20,000 in sizes ranging from a 12 inch diameter fan blade up to 48 inches in diameter. All of Invisco's whole house fans have motors with infinite speeds, not just 1 or 2 or 7. All Invisco motors can be optimized by adding the optional SmartSpeed(tm) automatic speed control. Invisco is the only whole house fan company to offer a selection of horse power motors ranging from 1/4 HP up to 3/4 HP. You have the choice of minimizing power or maximizing the performance. As an example, a 1/2 HP motor mounted on a belt drive assembly rotating a 30 inch blade at 500 RPM will pull 7,250 CFM. A 3/4 HP motor on the same assembly driving the blade at 725 RPM pulls 10,500 CFM. Add the Invisco SmartSpeed to that 3/4 HP motor and you will have the fastest cooling time at the lowest cost in overall power in this industry. Specialties World's largest selection of CFM performance levels, World's first automatic speed control, SmartSpeed(tm), America's first and only infinite speed fans, The only whole house fan company to offer 3/4 HP motors.