Modern Day MD SilentMaster S900r 120V Central Vacuum

The MD SilentMaster S900r Central Vacuum Power Unit delivers exceptional cleaning performance with an impressive 905 air watts of suction power, dual heavy-duty motors, and MD's patented sound suppression technology.

Designed for large homes and demanding central vacuum systems, the SilentMaster S900r combines powerful airflow, outstanding suction, and quiet operation in one premium American-assembled central vacuum.

With coverage rated for homes up to 20,000 square feet, an 8-gallon Tru-Seal® filtration system, and a 12-year transferable manufacturer warranty, the S900r is an excellent choice for homeowners seeking a powerful, long-lasting built-in vacuum system.

Whether you're replacing an aging central vacuum, upgrading to a higher-performance unit, or installing a new whole-house vacuum system, the MD SilentMaster S900r delivers the cleaning power and reliability you expect from a premium central vacuum.

At Redmond Vacuum, we specialize in central vacuum sales, installation, replacement, and repairs. Shop online nationwide or contact our experienced team for help choosing the right system for your home.

Why Choose the MD SilentMaster S900r?

• 905 Air Watts of Cleaning Power: Exceptional suction performance for deep cleaning carpets, area rugs, hardwood floors, and everyday household debris.

• Dual 3-Stage Bypass Motors: Two powerful 5.7-inch motors deliver impressive suction and airflow for demanding central vacuum applications.

• Designed for Homes Up to 20,000 Sq. Ft.: Ideal for large homes, multi-level properties, and extensive built-in vacuum systems.

• Patented SilentMaster Sound Suppression: Advanced noise-reduction technology helps keep operating noise to approximately 64 decibels.

• 191 CFM Airflow: High airflow helps move dirt and debris efficiently through your central vacuum piping system.

• 8-Gallon Tru-Seal® Filtration: Large-capacity disposable bags help contain dust and debris for cleaner, more convenient maintenance.

• Heavy-Duty Steel Construction: Durable powder-coated steel housing designed to resist rust, chipping, and everyday wear.

• Dual Intake Connections: Left- and right-side intake ports provide flexibility for new installations and replacement systems.

• Built-In Utility Valve: Convenient hose connection for cleaning around the garage, basement, or utility area.

• Designed & Assembled in the USA: Quality American craftsmanship from MD Manufacturing.

• 12-Year Transferable Warranty: Long-term manufacturer-backed electrical component coverage, plus lifetime construction coverage subject to warranty terms.

MD SilentMaster S900r Specifications

Important Electrical Requirements

The MD SilentMaster S900r requires a 120-volt, 30-amp electrical circuit using 10-gauge wiring and a NEMA 5-30 receptacle.

This is not a standard household electrical outlet. The necessary receptacle is not included with the unit.

Before purchasing, verify that your installation location has the appropriate electrical setup. If you're replacing an existing central vacuum, your current electrical connection may need to be upgraded.

Contact Redmond Vacuum if you have questions about installation requirements or selecting the right power unit for your home.

Upgrade or Replace Your Existing Central Vacuum

If your current central vacuum is losing suction, making unusual noises, or no longer operating reliably, replacing the power unit may be the best solution.

The MD SilentMaster S900r is an excellent upgrade for homeowners seeking stronger suction, quieter operation, and dependable long-term performance.

Depending on your existing system, you may be able to retain your current wall inlets, vacuum piping, hoses, and cleaning attachments.

Upgrading your central vacuum power unit can help:

• Restore strong, consistent suction throughout your home.

• Improve cleaning performance on carpets and hard floors.

• Reduce operating noise compared with many older systems.

• Extend the usefulness of your existing built-in vacuum system.

• Avoid the expense of replacing compatible piping and wall inlets.

Not sure whether the SilentMaster S900r will work with your existing central vacuum?

Our team can help evaluate compatibility, electrical requirements, piping configuration, and installation options before you order.

Professional Central Vacuum Installation & Repair – Redmond, WA

Redmond Vacuum provides professional central vacuum installation, replacement, maintenance, and repair services throughout the greater Seattle Eastside.

We proudly serve homeowners in Redmond, Sammamish, Issaquah, Bellevue, Kirkland, Woodinville, and surrounding communities.

Our central vacuum services include:

• New central vacuum power unit installations

• Replacement of older or failed central vacuum systems

• Central vacuum motor replacement and repairs

• Suction loss and airflow troubleshooting

• Central vacuum pipe and inlet service

• System upgrades and replacement recommendations

Whether you're upgrading a central vacuum in your existing home or planning a new installation, Redmond Vacuum can help you find the right solution.

Need professional installation? Contact Redmond Vacuum to discuss your existing system and request an installation or service appointment.

Shop MD SilentMaster Central Vacuums Online

Redmond Vacuum proudly helps customers nationwide find premium central vacuum systems and replacement power units.

The MD SilentMaster S900r is an excellent choice for homeowners who want powerful dual-motor performance, quiet operation, and long-lasting reliability.

Order your MD SilentMaster S900r online or contact our experienced team for help choosing the right central vacuum for your home.

Ready to upgrade your central vacuum?

Shop the MD SilentMaster S900r today, or contact Redmond Vacuum to schedule a local installation, replacement, or service appointment.