Air curtains themselves do not heat the room. However, some air curtains come equipped with heating elements to provide additional comfort near entrances and doorways. These heated air curtains blow a stream of warm air downward, which can help prevent cold drafts from entering the building and maintain comfortable indoor temperatures near the entrance. The primary function of air curtains, whether heated or unheated, is to create a barrier of air across openings to prevent the exchange of indoor and outdoor air. This barrier helps to maintain consistent indoor temperatures, improve energy efficiency, and enhance comfort by reducing drafts near entrances. It's important to note that while heated air curtains can provide localized heating near doorways, they are not typically used as a primary heating source for larger spaces. Instead, they complement existing heating systems by reducing heat loss and improving comfort in specific areas of the building. The heating function of air curtains is often used in conjunction with other heating solutions, such as central heating systems or space heaters, to provide comprehensive temperature control throughout the building.