A Dedicated Outside Air System (DOAS) is an HVAC system that provides a steady stream of conditioned air from outside to the inside of a building. The DOAS design allows for two primary functions: providing fresh air ventilation, and conditioning the air to reduce energy consumption. Unlike conventional air handling systems, DOAS splits the supply of fresh air and conditioned air into two streams, allowing the ventilation of the space without impacting the temperature or humidity levels in the space itself. This means you can keep your building comfortable while ensuring good indoor air quality.