Sound-Attenuating Enclosure For A Vacuum Source Of A Waste Collection Unit

A waste collection unit including a waste container, and vacuum source to collect medical waste into the waste container. The vacuum source is disposed within a sound attenuating enclosure that defines an enclosure inlet for receiving cooling air and an enclosure outlet for discharging warmed cooling air. The sound attenuating enclosure is at least partially formed of a sound-absorbing material and may define a pocket for receiving a first end of the vacuum source. The first end of the vacuum source may engage a seat of the sound attenuating enclosure to provide a cooling air barrier. The seat may define a bottom portion of the pocket. Internal geometries of the sound attenuating enclosure may be shaped to define another air path that does not pass through the vacuum source. A plenum may be attached to the sound attenuating enclosure and define a plenum chamber to collect the warmed cooling air.