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A solar window heater works by circulating air from inside a room through the system mounted on the interior window sill. The room air can gain up to 30 - 40 degrees before being vented back into the room. Our portable system design allows you to move the unit to follow the sun for maximum heat gain. These solar window heater are used to supplement an existing home heating system and can save up to 30% to 40% on room heating costs annually.

An evolution in design, new for 2013 Model Extreme Heat natural convection solar window heater has set a new industry standard. The core of the Extreme Heat is the aluminum "U.S. Patented Solar Air Heater profile".

Each solar air heater profile has been specifically designed to capture the suns energy from early morning to late afternoon, converting energy to heat.Unlike flat plate aluminum and angular polycarbonate (plastic) solar window heater, the extreme heat aluminum profile has a unique curvature allowing capture and transfer of heat to the center of each individual insert. Because of the unique profile design the overall surface area is greater than any other angular and or flat plate solar window heater of similar size.