An electric make up air unit is a device used to provide fresh air to a space that is not naturally ventilated. It is designed to bring in fresh air to replace the air that is lost due to ventilation systems, such as air conditioning, heating, and exhaust fans. This is important to maintain a healthy indoor air quality and to prevent air stagnation. The electric make up air unit works by drawing in fresh air from the outside and pushing it into the space. It is powered by electricity and is typically mounted on the roof or exterior wall of the building. It is important to note that the make up air unit should be sized appropriately for the space it is intended to serve, as too small of a unit will not provide enough fresh air, while too large of a unit will be wasteful of energy.