Almost every central air home lacks sufficient ventilation. The all-new Booster Fan Plus is equipped with a built-in thermostat that allows the user to set it so that when the air passing through the fan reaches the designated temperature it will automatically turn on, increasing and maximizing ventilation efficiency in any room in your home. The Cyclone Booster Fan Plus pulls air back into your rooms quietly. Even with well-designed heating and cooling systems there is usually at least one room in the house that lacks proper airflow. The Booster Fan Plus helps to save energy in people’s homes and lower heating and cooling costs, especially important to Canadians worried about rising energy costs and faced with harsh, bitter cold winters, and hot, humid summers. Compared to the costs of turning up the thermostat or running an electric heater or air conditioner, the savings are tremendous. Fits into both 3″x10″ and 4″x10″ slots. The Booster Fan Plus’s fan blades are angled at forty-five degrees to push the air into the center of the room. For operating assistance please tab on “Support” and read under “Frequently Asked Questions”