This is an archived recording of the 2021 online version of the course. The course materials and continuing education credits and/or professional development hours are not available. The dedicated outdoor air system (DOAS) has become a very popular means to provide ventilation for buildings, particularly for low-energy, max tech, and zero energy buildings. DOAS and the accompanying room-level heating/cooling units provide many benefits, including low energy use, cost-effective humidity control, redundancy, and control simplicity. This new course covers the latest in DOAS application, design, and control, and the. instruction is best suited for those seeking basic to intermediate discussions on DOAS, including an overall introduction to the concept.