Abstract: A circulation unit is provided including a dual-fan unit having a first fan and a separate second fan. The first fan is configured to draw in fresh air from the ambient environment and direct the fresh air into the crib, while the second fan is configured to draw in dangerous gas from the crib and expel the dangerous gas to the ambient environment. The dual fan unit is fluidly coupled to a venting unit via a pair of fluid conduits. The venting unit is placeable within the crib, while the dual fan unit is placeable outside of the crib so as to distance the infant from electrical components and potentially harmful mechanical components, such as the fans.