New quiet series power unit based on the S5630 model. Unit features a muffler included in the box and new non-ventilated motor shroud with foam lining for an 8% overall reduction of motor noise (noise emitted where the unit is stored).

Other changes from the S5630 include a Teflon brand filter replacement for the Micro-Tex filter, new body color and movement of the utility valve on to the vacuum body instead of the remote mount utility valve of the S5630.