SilentMaster S900 Power Unit

• The largest dirt capacity available.
• A utility inlet for vacuuming directly from the power unit.
• Three-stage filtration for increased motor life.
• The finest, electrical components: Basler transformers, Honeywell relays, and Lamb motors.
• Electronically spot-welded, 20 gauge steel construction.
• Unequalled, quiet operation.

SilentMaster , Quiet yet powerful operation.

This is the result of nearly fifty years of experience in the design and manufacturing of central vacuum cleaning systems. This singular commitment to the central vacuum cleaning industry has produced the patented, innovative characteristics of the SilentMaster, which has led the quest for quiet operation.

SilentMaster is a vertical bag-type central vacuum. Why use bags instead of cyclonic action? (PDF)

Bags are the most efficient way to filter a central vacuum. Bagged units exhaust little-to-no debris, saving the motors from being bombarded by vacuumed particles. Owners do not have to externally exhaust a SilentMaster to the outside of a home. SilentMaster exhaust is clean enough to breathe and can be exhausted freely. And when you empty a SilentMaster, there is no billowing dust cloud. All the dust is trapped inside a filter bag, and is easily disposed of.