Carbontec® is a UL-listed technology that heats space with radiant energy using a carbon fiber polymer film which is only a mere 0.21 millimeters thick! Infrared waves heat the entire room with maximum efficiency while the system remains hidden inside the floors and/or ceilings of your home or office. Carbontec® Heating Systems only requires 20-25% space coverage! It connects through a thermostat and a step down transformer.