Heat-controlling films are innovative materials designed to manage and regulate the temperature in various settings by controlling the amount of heat that passes through them. These films can be applied to windows, skylights, and even building facades to improve energy efficiency and comfort. There are different types of heat-controlling films, each using distinct technologies to achieve temperature control. Some films are designed to reflect infrared radiation, thereby reducing heat gain in the summer and heat loss in the winter. Others may employ electrochromic or thermochromic technologies that adjust their heat-transmitting properties in response to external temperature or electrical signals.