SilentMaster Models Compared

SilentMaster 120V Unit Specifications

See 240 V Units

S460r

S460r
Part # S1157NH

Suction Power

6,000 sq ft Covers
Single 3-stage 5.7" by-pass motor Motor
458 Max Air Watts
139.0 " Water Lift
101.0 CFM

Dirt Collection

Tru-Seal® Closed Bag System Filtration
8 Gallon Trash Capacity

Other Features

62 dB Noise Level
14.1 Max Amps
37.0" Tall
39 lbs
12 Year Warranty

S500r

S500r
Part # S1254NH

Suction Power

6,000 sq ft Covers
Dual 2-stage 5.7" by-pass motors Motor
495 Max Air Watts
84.0 " Water Lift
166.0 CFM

Dirt Collection

Tru-Seal® Closed Bag System Filtration
8 Gallon Trash Capacity

Other Features

62 dB Noise Level
16.0 Max Amps
37.0" Tall
43 lbs
12 Year Warranty

S560r

S560r
Part # S1154AH

Suction Power

8,000 sq ft Covers
Single 2-stage 5.7" by-pass motor Motor
557 Max Air Watts
138.9 " Water Lift
125.0 CFM

Dirt Collection

Tru-Seal® Closed Bag System Filtration
8 Gallon Trash Capacity

Other Features

62 dB Noise Level
16.8 Max Amps
37.0" Tall
42 lbs
12 Year Warranty

S900r

S900r
Part # S1257NH

Suction Power

20,000 sq ft Covers
Dual 3-stage 5.7" by-pass motors Motor
905 Max Air Watts
139.0 " Water Lift
191.0 CFM

Dirt Collection

Tru-Seal® Closed Bag System Filtration
8 Gallon Trash Capacity

Other Features

64 dB Noise Level
27.8 Max Amps
37.0" Tall
49 lbs
12 Year Warranty

Specifications for all SilentMaster units

  • Resettable Minibreaker Protection
  • 18 & 20 Gauge Steel Construction
  • Powder Coat Surface finish
  • Dual Exhaust
  • Includes Dual intake valves
  • Includes Utility valve

SilentMaster Warranty

M.D. Manufacturing, Inc. warrants its Silent Master power units against electrical component failure for a period of twelve (12) years. This warranty is transferable with the unit and is not solely limited to the original owner. Any parts (excluding filters) required within the first twelve years will be furnished free of charge by the Authorized Dealer from whom the power unit was originally purchased. In addition, all Silent Master units are guaranteed for life against defects in materials and workmanship.

If an Authorized Dealer is not nearby, M.D. Manufacturing, Inc. will honor and perform required warranty services. The end user must return the unit to the factory freight pre-paid. This warranty does not apply to applications outside of North America, commercial applications, misuse, abuse, acts of God, operating without the filters, or units tampered with by unauthorized personnel.


Exterior Venting: Venting not required but optional. When venting, vent both exhaust ports.

* A central vacuum's square foot coverage should be based on factors including altitude, hours of use, complexity of pipe installation, length of furthest vacuum inlet, noise level desired, type and size of filtration, installation materials, and budget. The square footage recommendation on this page can be higher or lower when taking these factors into consideration.