SilentMaster Vacuum
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SilentMaster
Specifications

120 VOLT
SilentMaster S2
120 volt | 240 volt 		SilentMaster S4
120 volt | 240 volt		 SilentMaster S44
 120 volt | 240 volt 		SilentMaster S5
 120 volt | 240 volt
MD Part # S1254ND S1157ND S1155AD S1257ND
Complete Details
- Performance
- Features
- Installation
PDF
PDF
PDF
PDF
Motor Dual by-pass
5.7", 2-stage		 Single by-pass
5.7", 3-stage		 Single by-pass
5.7", 2-stage		 Dual by-pass
5.7", 3-stage
Max Airwatt* 495 458 653 905
Max Amp 16 14.1 16 27.8
WaterLift 84" 139" 148" 139"
CFM at 2"opening 166 101 130 191
Volt 120 120 120 120
Height / Width 37" / 14" 37" / 14" 37" / 14" 37" / 14"
Weight 43 lbs 42 lbs 42 lbs 49 lbs
Trash Capacity 12 gallons 12 gallons 12 gallons 12 gallons
Max Ft2 6,000 6,000 8,000 20,000
Filtration Type Disposable Bag: 3 Stage HyperFlow® or Sealed Microfiltration
Warranty**

Six Years + Lifetime, or Write Your Own Warranty
Protection Resettable Minibreaker
Construction 18 & 20 Gauge Steel
Finish Powder-coat Paint and Sealant Inside and Out
Micron Filtration .3 microns (and more than 99% of particles under 1 micron)
Quietness 62dBA 62dBA 68dBA 62dBA
Dual Exhaust
Dual Intake Valves
Utility Valve Connection
Purchasing Options†

†All MD Manufacturing units are sold through local dealers eliminating all middle men, such as distribution companies. This supplies you with a great product at a tremendous value. MD Power units are not authorized to be sold or priced on any websites or under different product names or private labels.

* Factors other than air watts should be taken into consideration including: altitude, amount of hours of daily usage, complexity of pipe installation, length of furthest vacuum inlet, noise level desired, type and size of filtration, country of origin, construction materials, and budget. The square footage recommendations on this page are solely based upon the suction capabilities of the unit.

** SilentMaster Warranty
M.D. Manufacturing, Inc. warrants its SilentMaster power units against electrical component failure for a period of six (6) years. Any parts (excluding filters) required within the first six years will be furnished free of charge by the Authorized Dealer from whom the power unit was originally purchased. In addition, all SilentMaster 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 commercial applications, misuse, abuse, acts of God, operating without the filters, or units tampered with by unauthorized personnel.

Write Your Own Warranty
If you, the owner, believe there exists a more thorough or effective warranty by another central vacuum manufacturer, M.D. Manufacturing, Inc. will honor the other company's warranty in lieu of the SilentMaster Warranty under the following conditions: A complete copy of the alternate warranty in writing must be attached to the M.D. Manufacturing, Inc. Warranty Registration Card. This card must be sent postage pre-paid to M.D. Manufacturing, Inc. MD will then honor the commitments listed on the alternate manufacturer's warranty including issues of non-transferability, wear and tear, or other exclusions.