MD Central SilentMaster S460r 120 Volt Central Vacuum Power Unit #S1157NH
- Product SKU: S1157NH
- Category: CENTRAL VACUUM, Central Vacuum Systems, MD Central Vacuum
Quick Summary
The MD Central SilentMaster S460r 120 Volt Central Vacuum Power Unit #S1157NH is a premium built-in central vacuum system engineered to deliver powerful whole-home suction, whisper-quiet operation, and dependable long-term performance. Featuring a high-performance 120-volt motor, the SilentMaster S460r efficiently removes dirt, dust, pet hair, allergens, and everyday debris while promoting cleaner indoor air throughout your home.
Available through Authorized MD Dealer Ace Vacuums, the SilentMaster S460r combines advanced sound-reduction technology, premium filtration, and durable construction to provide exceptional cleaning performance for small to medium-sized homes using standard household electrical service.
Product Overview
The MD SilentMaster S460r 120 Volt Central Vacuum Power Unit is designed for homeowners seeking premium cleaning performance without requiring a dedicated 240-volt electrical circuit. Installed remotely in a garage, basement, or utility room, the power unit significantly reduces operating noise while delivering strong, consistent suction through your home's central vacuum piping system.
Its high-performance 120V motor provides excellent airflow for cleaning carpets, area rugs, hardwood floors, tile, laminate, luxury vinyl plank (LVP), and other sealed hard floor surfaces when paired with compatible MD hoses, electric powerheads, telescopic wands, and cleaning accessories.
The advanced filtration system captures dust, pollen, allergens, pet dander, and microscopic airborne particles, while the large-capacity dirt collection system minimizes maintenance and supports longer cleaning sessions.
Purchase confidently from Authorized MD Dealer Ace Vacuums, your trusted source for genuine MD central vacuum systems, replacement parts, and accessories.
Expert Recommendation
Our central vacuum specialists recommend the MD SilentMaster S460r for homeowners seeking dependable whole-home cleaning with quiet operation and efficient 120-volt performance.
Recommended for:
- Small to medium-sized homes
- Multi-level homes
- Pet owners
- Allergy-sensitive households
- Central vacuum upgrades
- New home construction
- Everyday residential cleaning
- Homeowners wanting quieter vacuum operation
Best For
- Small to medium-sized homes
- Whole-home cleaning
- Carpeted homes
- Hardwood floors
- Tile flooring
- Luxury Vinyl Plank (LVP)
- Pet owners
- Allergy sufferers
- Quiet cleaning
- Premium residential central vacuum systems
Not Ideal For
- Apartments without central vacuum piping
- Homes requiring maximum 240V commercial-grade performance
- Portable vacuum users
- Homes without built-in central vacuum piping
Key Features
- High-performance 120-volt motor
- Ultra-quiet SilentMaster technology
- Powerful whole-home suction
- Advanced filtration system
- Large-capacity dirt collection
- Heavy-duty construction
- Low-maintenance operation
- Long motor service life
- Compatible with MD central vacuum accessories
- Excellent airflow performance
- Premium residential cleaning
- Built for dependable long-term reliability
What Makes This Model Stand Out
The SilentMaster S460r combines efficient 120-volt performance with advanced sound-dampening technology to create one of the quietest residential central vacuum systems available. It offers strong suction, advanced filtration, and durable construction while operating on standard household electrical service, making it an ideal solution for homeowners seeking premium cleaning without upgrading to 240 volts.
Product Comparisons
MD SilentMaster S460r vs Traditional Upright Vacuum
MD SilentMaster S460r
- Whole-home central vacuum
- Powerful continuous suction
- Ultra-quiet operation
- Improved indoor air quality
- Large dirt capacity
- Minimal maintenance
Traditional Upright Vacuum
- Portable
- Louder operation
- Smaller dust container
- Frequent emptying
- Limited cleaning coverage
MD SilentMaster S460r vs Standard Central Vacuum
SilentMaster S460r
- Premium 120V motor
- Advanced sound reduction
- Better airflow
- Superior filtration
- Designed for small to medium homes
Standard Central Vacuum
- Standard suction
- Conventional noise levels
- Average filtration
- General residential performance
Questions Buyers Commonly Ask
Is the MD SilentMaster S460r good for pet hair?
Yes. When paired with compatible MD electric powerheads, it effectively removes pet hair, pet dander, and embedded debris from carpets and hard floors.
Why choose the SilentMaster Series?
SilentMaster systems combine powerful suction with advanced sound insulation to create one of the quietest and most comfortable whole-home vacuuming experiences available.
Who benefits most from the SilentMaster S460r?
Families, pet owners, allergy sufferers, and homeowners seeking premium cleaning performance with quiet operation using standard household power.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | MD |
| Model | SilentMaster S460r |
| Part Number | S1157NH |
| Product Type | Central Vacuum Power Unit |
| Voltage | 120 Volts |
| Installation | Built-In Central Vacuum |
| Motor | High-Performance 120V Motor |
| Filtration | Advanced Filtration |
| Collection System | Large-Capacity Dirt Collection |
| Floor Compatibility | Carpet & Sealed Hard Floors |
| Recommended Home Size | Small to Medium Homes |
| Authorized Dealer | Ace Vacuums |
Ideal Buyers
Perfect for:
- Families
- Pet owners
- Allergy-conscious households
- Small to medium-sized homes
- Homeowners replacing older central vacuum systems
- New home construction
- Buyers seeking quiet whole-home cleaning
Why Buy from Ace Vacuums
When you purchase from Authorized MD Dealer Ace Vacuums, you receive:
- Genuine MD central vacuum products
- Expert product recommendations
- Competitive pricing
- Fast nationwide shipping
- Outstanding customer support
- Professional installation guidance
- Genuine MD replacement parts and accessories
Available Online & In-Store
The MD Central SilentMaster S460r 120 Volt Central Vacuum Power Unit #S1157NH is available through Authorized MD Dealer Ace Vacuums.
Shop Online
- Secure online ordering
- Fast nationwide shipping
- Genuine MD products
- Secure checkout
- Expert customer support
Visit Our Showrooms
Visit our Fairfax, VA and Leesburg, VA showroom locations to compare MD central vacuum systems, receive live demonstrations, and speak with experienced central vacuum specialists.
Comparison Table
| Feature | MD SilentMaster S460r | Standard Residential Central Vacuum |
| Voltage | 120 Volts | 120 Volts |
| Suction Power | Premium Performance | Standard |
| Noise Level | Ultra Quiet | Standard |
| Home Size | Small to Medium Homes | Average Homes |
| Dirt Capacity | Large | Standard |
| Pet Hair Removal | Excellent | Very Good |
| Indoor Air Quality | Advanced Filtration | Standard |
| Durability | Heavy-Duty | Standard |
| Support | Authorized MD Dealer Ace Vacuums | Varies |
Pros and Cons
Pros
- Powerful 120V motor
- Ultra-quiet SilentMaster technology
- Strong whole-home suction
- Advanced allergen filtration
- Excellent for homes with pets
- Large-capacity dirt collection
- Heavy-duty construction
- Backed by Authorized MD Dealer Ace Vacuums
Cons
- Requires a built-in central vacuum system
- Professional installation recommended for new systems
- Lower maximum suction than comparable 240V models
Quick Summary
The MD Central SilentMaster S460r 120 Volt Central Vacuum Power Unit #S1157NH is a premium built-in central vacuum system engineered to deliver powerful whole-home suction, whisper-quiet operation, and dependable long-term performance. Featuring a high-performance 120-volt motor, the SilentMaster S460r efficiently removes dirt, dust, pet hair, allergens, and everyday debris while promoting cleaner indoor air throughout your home.
Available through Authorized MD Dealer Ace Vacuums, the SilentMaster S460r combines advanced sound-reduction technology, premium filtration, and durable construction to provide exceptional cleaning performance for small to medium-sized homes using standard household electrical service.
Product Overview
The MD SilentMaster S460r 120 Volt Central Vacuum Power Unit is designed for homeowners seeking premium cleaning performance without requiring a dedicated 240-volt electrical circuit. Installed remotely in a garage, basement, or utility room, the power unit significantly reduces operating noise while delivering strong, consistent suction through your home's central vacuum piping system.
Its high-performance 120V motor provides excellent airflow for cleaning carpets, area rugs, hardwood floors, tile, laminate, luxury vinyl plank (LVP), and other sealed hard floor surfaces when paired with compatible MD hoses, electric powerheads, telescopic wands, and cleaning accessories.
The advanced filtration system captures dust, pollen, allergens, pet dander, and microscopic airborne particles, while the large-capacity dirt collection system minimizes maintenance and supports longer cleaning sessions.
Purchase confidently from Authorized MD Dealer Ace Vacuums, your trusted source for genuine MD central vacuum systems, replacement parts, and accessories.
Expert Recommendation
Our central vacuum specialists recommend the MD SilentMaster S460r for homeowners seeking dependable whole-home cleaning with quiet operation and efficient 120-volt performance.
Recommended for:
- Small to medium-sized homes
- Multi-level homes
- Pet owners
- Allergy-sensitive households
- Central vacuum upgrades
- New home construction
- Everyday residential cleaning
- Homeowners wanting quieter vacuum operation
Best For
- Small to medium-sized homes
- Whole-home cleaning
- Carpeted homes
- Hardwood floors
- Tile flooring
- Luxury Vinyl Plank (LVP)
- Pet owners
- Allergy sufferers
- Quiet cleaning
- Premium residential central vacuum systems
Not Ideal For
- Apartments without central vacuum piping
- Homes requiring maximum 240V commercial-grade performance
- Portable vacuum users
- Homes without built-in central vacuum piping
Key Features
- High-performance 120-volt motor
- Ultra-quiet SilentMaster technology
- Powerful whole-home suction
- Advanced filtration system
- Large-capacity dirt collection
- Heavy-duty construction
- Low-maintenance operation
- Long motor service life
- Compatible with MD central vacuum accessories
- Excellent airflow performance
- Premium residential cleaning
- Built for dependable long-term reliability
What Makes This Model Stand Out
The SilentMaster S460r combines efficient 120-volt performance with advanced sound-dampening technology to create one of the quietest residential central vacuum systems available. It offers strong suction, advanced filtration, and durable construction while operating on standard household electrical service, making it an ideal solution for homeowners seeking premium cleaning without upgrading to 240 volts.
Product Comparisons
MD SilentMaster S460r vs Traditional Upright Vacuum
MD SilentMaster S460r
- Whole-home central vacuum
- Powerful continuous suction
- Ultra-quiet operation
- Improved indoor air quality
- Large dirt capacity
- Minimal maintenance
Traditional Upright Vacuum
- Portable
- Louder operation
- Smaller dust container
- Frequent emptying
- Limited cleaning coverage
MD SilentMaster S460r vs Standard Central Vacuum
SilentMaster S460r
- Premium 120V motor
- Advanced sound reduction
- Better airflow
- Superior filtration
- Designed for small to medium homes
Standard Central Vacuum
- Standard suction
- Conventional noise levels
- Average filtration
- General residential performance
Questions Buyers Commonly Ask
Is the MD SilentMaster S460r good for pet hair?
Yes. When paired with compatible MD electric powerheads, it effectively removes pet hair, pet dander, and embedded debris from carpets and hard floors.
Why choose the SilentMaster Series?
SilentMaster systems combine powerful suction with advanced sound insulation to create one of the quietest and most comfortable whole-home vacuuming experiences available.
Who benefits most from the SilentMaster S460r?
Families, pet owners, allergy sufferers, and homeowners seeking premium cleaning performance with quiet operation using standard household power.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | MD |
| Model | SilentMaster S460r |
| Part Number | S1157NH |
| Product Type | Central Vacuum Power Unit |
| Voltage | 120 Volts |
| Installation | Built-In Central Vacuum |
| Motor | High-Performance 120V Motor |
| Filtration | Advanced Filtration |
| Collection System | Large-Capacity Dirt Collection |
| Floor Compatibility | Carpet & Sealed Hard Floors |
| Recommended Home Size | Small to Medium Homes |
| Authorized Dealer | Ace Vacuums |
Ideal Buyers
Perfect for:
- Families
- Pet owners
- Allergy-conscious households
- Small to medium-sized homes
- Homeowners replacing older central vacuum systems
- New home construction
- Buyers seeking quiet whole-home cleaning
Why Buy from Ace Vacuums
When you purchase from Authorized MD Dealer Ace Vacuums, you receive:
- Genuine MD central vacuum products
- Expert product recommendations
- Competitive pricing
- Fast nationwide shipping
- Outstanding customer support
- Professional installation guidance
- Genuine MD replacement parts and accessories
Available Online & In-Store
The MD Central SilentMaster S460r 120 Volt Central Vacuum Power Unit #S1157NH is available through Authorized MD Dealer Ace Vacuums.
Shop Online
- Secure online ordering
- Fast nationwide shipping
- Genuine MD products
- Secure checkout
- Expert customer support
Visit Our Showrooms
Visit our Fairfax, VA and Leesburg, VA showroom locations to compare MD central vacuum systems, receive live demonstrations, and speak with experienced central vacuum specialists.
Comparison Table
| Feature | MD SilentMaster S460r | Standard Residential Central Vacuum |
| Voltage | 120 Volts | 120 Volts |
| Suction Power | Premium Performance | Standard |
| Noise Level | Ultra Quiet | Standard |
| Home Size | Small to Medium Homes | Average Homes |
| Dirt Capacity | Large | Standard |
| Pet Hair Removal | Excellent | Very Good |
| Indoor Air Quality | Advanced Filtration | Standard |
| Durability | Heavy-Duty | Standard |
| Support | Authorized MD Dealer Ace Vacuums | Varies |
Pros and Cons
Pros
- Powerful 120V motor
- Ultra-quiet SilentMaster technology
- Strong whole-home suction
- Advanced allergen filtration
- Excellent for homes with pets
- Large-capacity dirt collection
- Heavy-duty construction
- Backed by Authorized MD Dealer Ace Vacuums
Cons
- Requires a built-in central vacuum system
- Professional installation recommended for new systems
- Lower maximum suction than comparable 240V models
Frequently Asked Questions
1. What is the MD Central SilentMaster S460r 120 Volt Central Vacuum Power Unit #S1157NH designed for?
It is designed to provide whole-home central vacuum cleaning for residential properties, with a published coverage recommendation of up to approximately 6,000 square feet.
2. What type of motor does the S460r use?
It uses a single 3-stage 5.7-inch by-pass motor designed to provide strong suction and airflow performance.
3. How much suction performance does the power unit provide?
The unit is rated at up to 458 air watts, 101 CFM airflow, and 139 inches of water lift.
4. What is the collection capacity of this central vacuum?
It has an 8-gallon Tru-Seal closed-bag collection system.
5. Does the S460r use a bagged filtration system?
Yes. The Tru-Seal system uses a closed replacement bag to collect dirt and debris.
6. What is Tru-Seal closed-bag filtration?
It is a closed-bag microfiltration system designed to contain collected debris while filtering the air passing through the central vacuum.
7. Is this model suitable for a larger home?
Yes. The S460r is published as covering homes up to approximately 6,000 square feet, depending on the overall system design and installation.
8. Does the unit include a utility valve?
Yes. The utility valve provides a convenient connection point for cleaning areas close to the power unit.
9. What is the noise rating of this model?
The published noise rating is approximately 62 dB.
10. Is the power unit made from steel?
Yes. The body and lid use durable 20-gauge steel, with powder coating on the interior and exterior.
11. Does the S460r have dual exhaust?
Yes. Dual exhaust is one of the listed features of the S460r.
12. Does it have flexible intake connections?
Yes. The power unit has both right and left intake valves, which can provide installation flexibility.
13. How often should the collection bag be replaced?
Replacement frequency depends on the amount of debris collected and how frequently the system is used. Replace the bag when it becomes full or begins to affect airflow and cleaning performance.
14. Can this model replace an existing central vacuum power unit?
It can be used as a replacement when the existing central vacuum system is compatible. Before ordering, verify the voltage, tubing connections, mounting location, and other installation requirements.
15. What warranty is available for this model?
The S460r is listed with a 12-year warranty in the published product specifications. Warranty coverage is subject to the manufacturer's terms and conditions.
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Shipping, Return & Refund Policy
AceVacuums wants customers to understand shipping expectations, return requirements, and refund timing clearly before placing an order. This page explains how order processing, shipping, return authorization, exchanges, damaged-item reporting, and refunds are generally handled.
Our goal is to keep policy information easy to read, professionally structured, and fair to both the customer and the condition standards required for product resale and support.
Quick Access
How to Use This Policy Page
This page is designed as a single policy center for customers who want a clearer summary of shipping, return, and refund expectations before ordering from AceVacuums.
Product category, item condition, packaging completeness, reporting speed, carrier timing, and whether a product is opened, used, installed, or special-order can all affect the final policy outcome.
Shipping Policy
AceVacuums aims to process and ship eligible in-stock orders as quickly as possible so customers are not left waiting unnecessarily for common vacuum products, parts, bags, filters, or accessories. The live page currently presents this as a shipping-and-return page, so this combined format preserves that structure in a cleaner layout. :contentReference[oaicite:0]{index=0}
Order processing
Eligible in-stock orders placed before the daily business-day cutoff are generally processed the same day. Orders placed after the cutoff, on weekends, or on holidays are generally processed on the next business day.
Shipping timing can vary
Final shipping and delivery timing may be affected by carrier performance, weather, inventory confirmation, order verification, holidays, or whether the item is special-order or temporarily unavailable.
Tracking and delivery
Once an order ships, delivery timing is generally controlled by the carrier. Customers should monitor tracking updates and inspect packages promptly after arrival.
Return Policy
AceVacuums wants customers to understand return expectations clearly before placing an order. Returns are reviewed based on timing, item condition, product category, and whether the merchandise remains complete and resale-ready.
Return authorization is required
All returns must be requested and approved by AceVacuums before the item is sent back. Unauthorized returns may be refused.
Standard return window
Eligible items should generally be reported for return within 30 days of delivery unless another condition is stated on the product page, invoice, or at the time of purchase.
Condition matters
Original packaging, manuals, accessories, cleanliness, and overall condition affect whether a return can be accepted and on what terms.
Opened or used items: Opened, installed, assembled, or used products may be subject to inspection, reduced refund eligibility, restocking fees, exchange limits, or denial depending on category and condition.
Non-Returnable or Final-Sale Items
Certain products may be non-returnable or final sale depending on category, condition, installation status, or product-specific rules.
Damaged, Defective, Incorrect, or Missing Items
If an order arrives damaged, defective, incomplete, or incorrect, contact AceVacuums as soon as possible after delivery. The current live policy page already combines shipping and return expectations, so this section clarifies the issue-reporting path customers most often need. :contentReference[oaicite:1]{index=1}
What customers should do
- Inspect the shipment promptly
- Keep all original packaging
- Take clear photos if damage is visible
- Provide the order number and issue summary
Why prompt reporting matters
Problems reported quickly are easier to document and investigate. Delayed reporting can reduce available resolution options depending on the issue and the carrier timeline.
Refund Policy
Refunds are issued after inspection
Refunds are generally issued only after the returned item is received, inspected, and approved by AceVacuums.
Possible deductions
Depending on the circumstances, original shipping charges, return shipping costs, or restocking fees may be non-refundable or deducted where permitted and appropriate.
Refund timing
If approved, refunds are generally issued back to the original payment method. Timing may vary based on inspection completion and payment-provider processing.
Exchanges
Eligible exchange requests may be approved based on item condition, replacement availability, return reason, and whether the replacement is the same item or a different product.
Return Shipping Costs
Unless the return is due to an approved seller error or an approved damaged/defective item claim, the customer is generally responsible for return shipping costs.
Store vs Online Orders
In-store purchases may be subject to different procedures than online orders. Customers should follow the instructions on their receipt, invoice, or from AceVacuums staff when applicable.
Shipping, Return & Refund FAQs
Helpful Policy & Support Links
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If you have a shipping, return, refund, warranty, or product-support question, contact AceVacuums before you take the next step. In many cases, clearer guidance early can prevent delays and confusion later.
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