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SilentMaster Central Vacuum System
Silence is Golden

The moment you put your Silent Master to use you'll know why we named it Silent Master. Yes, it's true that all central systems are quieter because the power unit is located outside the living area. But the SilentMaster power unit is so quiet it could be mounted inside the living area. In fact, recent tests have shown it to be more quiet than most popular portables -- yet still 3 to 5 times more powerful! All thanks to a new, patented, innovative, acoustical design created by the makers of Silent Master.

And that is just one of the many advantages of owning a SilentMaster Central Vacuum Cleaning System. If you live in a townhouse, condominium, mobile home, or any place where space is at a premium, you'll love the "silent" in SilentMaster. If you live in a conventional home -- you'll love it even more, and everyone will especially love to use it with the Stealth Power Brush.

Visit our testimonial to read what others are saying about SilentMaster.

Already own a SilentMaster?
Find bags, filters, hoses, motors, accessories, or upgrades for all Silent Master models here.

Looking to replace your current central vacuum?
The most popular replacement for central vacuums of all brands is the Silent Master models S2 and S4 for homes under 5,000 sq. ft. and model S5 for ones over it. The SilentMaster is completely compatible with your existing pipe and attachments. It does empty from the top which may be different than your current vacuum. Please call us or one of our dealers for helpful information and prices.

SilentMaster Central Vacuum System
*Proven Test Results
Recent test results from an independent sound laboratory show that SilentMaster operates at a level of sound less than 68 (dB) -- below that of normal conversation.
And we think that's something we should not keep silent about!

Independent sound laboratory sound chart:

Make your own test comparison today and you'll experience the Silent in SilentMaster.

* Test Data On File With Manufacturer.

See the difference! Hear the difference!
A manufacturer is only as good as its willingness to encourage comparison.

SilentMaster encourages you to compare, not only the construction of other units, but to actually use and listen to other working models as well.

Each SilentMaster unit is made of 20-gauge steel, electronically spot-welded for strength and lifelong durability, then coated with a baked-on, high gloss enamel finish. All system parts and electrical components are the finest available.

Finally, the 'Silent' is put into SilentMaster with an innovative design* for acoustically insulating the motors in their own housing...all without affecting power or performance.

So, if it's your desire to have the maximum in quality and performance, we are confident that wise and careful discernment will lead you to SilentMaster.

Volt	Motor	MD Part#	Max Airwatt	Max Amps	Waterlift at 0" opening	CFM at 2" opening	Volt.	Height	Weight	Trash Capacity
For homes up to 6,000 square feet
S2	2 by-pass motors (119413) 5.7", 2-stg.	104SM	514 (1 1/8" opening)	15.8	85"	183	120	38"	43 lbs	12 gal.
S4	1 by-pass motor (117939) 5.7", 3-stg.	114SM	458 (3/4" opening)	14.1	139"	101	120	38"	42 lbs	12 gal.
SP2*	1 by-pass motor (117478) 7.2", 2-stg.	101SP	549 (3/4" opening)	14.0	120"	116	120	38"	46 lbs	12 gal.
SP3*	1 by-pass motor (117500) 7.2", 3-stg.	100SP	530 (3/4" opening)	14.4	146"	103	120	38"	46 lbs	12 gal.
For homes over 6,000 square feet
S5	2 by-pass motors (117939) 5.7", 3-stg.	108SM	905 (1 1/8" opening)	27.8	139"	191	120	38"	49 lbs	12 gal.
Outside venting available for all units. All units are 14" diameter. All units have 4-stage filtration. *Special Order Units

240 Volt	Motor	MD Part#	Max Airwatt	Max Amps	Waterlift at 0" opening	CFM at 2" opening	Volt.	Height	Weight	Trash Capacity
For homes up to 6,000 square feet
S2	2 by-pass motors (116296) 5.7", 2-stg.	104SX	722 (1 1/8" opening)	9.8	95"	208	240	38"	43 lbs	12 gal.
S4*	1 by-pass motor (117944) 5.7", 3-stg.	114SX	444 (3/4" opening)	6.9	138"	100.3	240	38"	42 lbs	12 gal.
SP*	1 by-pass motor (117480) 7.2", 2-stg.	101SX	603 (3/4" opening)	7.1	129.3"	120.6	240	38"	46 lbs	12 gal.
SP3*	1 by-pass motor (117502) 7.2", 3-stg.	100SX	561 (3/4" opening)	7.5	147.2"	105.5	120	38"	46 lbs	12 gal.
For homes over 6,000 square feet
S5	2 by-pass motors (117944) 5.7", 3-stg.	108SX	866 (1 1/8" opening)	13.7	136.4"	190	240	38"	49 lbs	12 gal.
Outside venting available for all units. All units sre 14" diameter. All units have 4-stage filtration. *Special Order Units

CFM vs. Waterlift

Read the Vacuumology article for fuller understanding and to view comparison performance graphs. Here is the short version: CFM is defined as the Cubic Feet of Air per Minute that is moved through a specific size opening. In the vacuum industry, this is usually expressed as a standard size of two inches. Waterlift, on the other hand, is the vertical distance that same power source (a vacuum motor) is able to lift a column of water up a sealed tube (the water creates the seal), through the power of suction.

As the size of the opening (orifice) gets smaller, the waterlift increases and CFM decreases. Conversely, as the opening gets larger, the waterlift decreases while the CFM increases. Depending on the power unit these differences can be quite substantial.

Therefore, it becomes imperative to know how the performance of each individual power unit is effected by any one orifice within a particular system.

AirWatts vs. Orifice

AirWatts or "Cleanability Rating" is defined as CFM at a given opening (orifice) multiplied by the waterlift at that same opening, then divided by 8.5.

The most critical measurements are those representing the smallest size opening through which air is flowing in any particular system. Therefore, being able to calculate the AirWatts of each individual unit and knowing the actual orifice of each specific tools, makes it possible to select the power brush best suited for the needs of that system. In essence, you are able to create the optimum package for your individual requirements.

SilentMaster WARRANTY

SilentMaster warranties all its power units against electrical component failure for a period of three (3) years. Any parts or repairs (excluding filters) required within the first three years will be furnished free of charge by the authorized dealer form whom the power unit was originally purchased.

SilentMaster will; extend the warranty on all its power units for an additional three (3) years --- for an overall coverage of six (6) years --- provided the motor brushes are inspected and replaced (if needed) at the end of the first three (3) years. There is a nominal service charge for the warranty extension and the inspection must be done by an authorized SilentMaster dealer.

SilentMaster also provides a Lifetime Warranty for those units serviced on the extended warranty plan by continuing to replace and/or repair all "replacement" parts as a cost never to exceed fifty percent (50%) of the retail price at the time the repair or replacement takes place. The Lifetime Warranty begins at the end of the warranty extension period and is in effect for the life of the unit. Additionally, all SilentMaster units are guaranteed for life against defects in materials and workmanship. In the event an authorized dealer is not nearby, SilentMaster will honor and perform all warranty and/or warranty extension services for a nominal charge, provided the power unit is returned to the factory, freight prepaid, and it can be verified that all services were performed by an authorized SilentMaster dealer. This warranty does not apply to commercial applications, misuse, abuse, or if unit has been worked on by an unauthorized person.