Make-Up Air Unit (MAU)

A Make-Up Air Unit (MAU) is an HVAC device specifically designed to bring fresh, conditioned air into a building to replace air that has been expelled or exhausted. Unlike standard ventilation systems, it conditions the incoming air (heating, cooling, humidifying, or dehumidifying it) to maintain indoor air quality and comfort, while also ensuring the pressure balance within the building. These units are often used in spaces like commercial kitchens, manufacturing facilities, and laboratories where large amounts of air are frequently exhausted.