Nadair SD-710-22SF Super Duty HEPA Central Vacuum Power Unit, 710 AW, 22L

Quick Summary

The Nadair SD-710-22SF is a Super Duty central vacuum power unit with 710 airwatts, 151.9 inches of water lift, and 137.1 CFM of airflow. Its 22 L aluminum canister, cyclonic self-cleaning hybrid filtration, soft-start/stop technology, and included True HEPA filter are designed for dependable whole-house vacuum cleaning.

Authorized Nadair Dealer Ace Vacuums can help you confirm that this central vacuum system fits your existing piping, electrical setup, and cleaning needs. The hose and attachment kit are sold separately and must match the home's inlet and wiring type.

Quick Highlights

• 710 airwatts with 151.9 inches of water lift and 137.1 CFM airflow
• 71 dB operating noise with noise-isolating foam and an included external muffler
• 22 L / 5.8 gal bottom-load aluminum canister
• Hybrid filtration works with or without a disposable bag and filters up to 99.99%
• 15-year residential parts warranty on listed components, plus 1 year of labor

Product Overview

The Nadair SD-710-22SF is built around an 8.4-inch, two-stage Ametek Lamb by-pass commercial-grade motor. The motor uses Infinity brushes rated for more than 1,500 hours, while 710 airwatts, 151.9 inches of water lift, and 137.1 CFM provide the core performance figures for this central vacuum power unit.

Its hybrid filtration system gives homeowners two operating choices. You can use a disposable triple-layer bag for convenient debris removal, or operate bagless with the included True HEPA self-cleaning filter. The True HEPA filter must remain installed in either configuration and filters up to 99.99%.

The 22 L bottom-load canister is made from lightweight, rustproof aluminum and is designed for removal wherever the power unit is installed. Dual side air intakes make the unit adaptable to an existing piping network, and the system fits standard 2-inch outside-diameter PVC piping meeting ASTM F2158.

Soft-start/stop technology helps reduce the stress of starting and stopping the motor, while a three-second delay helps clear the hose and piping after cleaning. An LED indicator displays the unit's status and reminds you to empty the canister.

Expert Recommendation

This model suits homeowners who want strong central vacuum performance, hybrid bagged-or-bagless operation, and a self-cleaning True HEPA filter in a 22 L canister. It is also a practical replacement option when an existing central vacuum installation uses standard 2-inch outside-diameter PVC piping and has suitable electrical service.

The SD-710-22SF is not automatically the right choice for every installation. The quieter 65 dB SD-659-22SF offers 659 airwatts, 144.9 inches of water lift, and 135.8 CFM, while the 750-airwatt HD-750-22H offers 146 inches of water lift, 141.2 CFM, and 65 dB. A larger 32 L unit, such as the SD-710-32SF, may be preferable when more canister capacity is important and the installation has room for it.

The central vacuum power unit must be installed indoors in a weather-protected, well-ventilated location with 6 inches of clearance on all sides. It requires a dedicated individual 15 A branch circuit, so Ace Vacuums can help review the unit and piping run before installation.

Best For

Strong Cleaning Performance

The 710-airwatt motor produces 151.9 inches of water lift and 137.1 CFM of airflow for homeowners seeking a high-output central vacuum power unit.

Hybrid Filtration

The unit can run with a disposable bag or without one, using the included True HEPA self-cleaning filter for bagless operation.

Allergy-Conscious Households

The True HEPA self-cleaning filter is included, must remain installed, and is rated to filter up to 99.99%.

Existing Piping Networks

Dual side air intakes and compatibility with standard 2-inch outside-diameter PVC piping support replacement installations using suitable existing tubing.

Long-Term Ownership

The commercial-grade motor, soft-start/stop technology, and 15-year residential parts warranty support homeowners planning to keep the system for many years.

22 L Installations

The 22 L bottom-load canister provides a balance of capacity and physical size for installations that do not require the larger 32 L canister.

Not Ideal For

• It may not be ideal for shoppers seeking a complete cleaning package because the hose and attachment kit are sold separately.
• It requires a dedicated individual 15 A branch circuit and professional electrical installation guidance, which may add planning to a replacement project.
• At 71 dB, it is rated louder than the 62-65 dB Nadair ST and HD units.
• Homeowners who want the longest intervals between emptying may prefer a 32 L Nadair model if their installation has enough room.

Key Features

• 710 Airwatts: The motor system is rated at 710 airwatts for high central vacuum performance.
• Two-Stage Motor: An 8.4-inch, two-stage Ametek Lamb by-pass commercial-grade motor uses Infinity brushes rated for more than 1,500 hours.
• Hybrid Filtration: Use the system with a disposable bag or without one while keeping the True HEPA filter installed.
• Self-Cleaning Filter: The included True HEPA polypropylene filter is self-cleaning and filters up to 99.99%.
• Soft Start/Stop: Soft-start/stop technology is designed to extend motor life by 20%.
• Noise Isolation: Noise-isolating foam and an included external muffler support the 71 dB silent-system design.
• Aluminum Canister: The rustproof, lightweight aluminum canister has a smooth, polished finish.
• Bottom Loading: The 22 L / 5.8 gal canister loads from the bottom and can be removed wherever the unit is installed.
• LED Indicator: An LED displays system status and provides a reminder to empty the canister.
• Dual Air Intakes: Dual side air intakes simplify connection to an existing central vacuum piping network.

What Makes This Model Stand Out

The SD-710-22SF combines the highest water-lift figure listed among the compared standard Super Duty models with a hybrid filtration design. Its 151.9 inches of water lift and 137.1 CFM airflow are paired with a bagged-or-bagless setup, so homeowners can choose between convenient bag disposal and bagless operation.

Its maintenance and installation details are equally important. The True HEPA filter must not be washed, the unit needs a dedicated 15 A circuit, and the power unit should be installed with proper clearance and ventilation. Following these requirements helps keep the system operating as intended and protects the warranty conditions.

Product Comparisons

SD-710-22SF vs SD-659-22SF

Both models have a 22 L canister, hybrid cyclonic self-cleaning filtration, soft-start/stop technology, and filtration up to 99.99%. The SD-710-22SF provides 710 airwatts, 151.9 inches of water lift, and 137.1 CFM at 71 dB, while the SD-659-22SF provides 659 airwatts, 144.9 inches of water lift, and 135.8 CFM at 65 dB.

SD-710-22SF vs HD-750-22H

The SD-710-22SF has a 22 L canister, 710 airwatts, 151.9 inches of water lift, and 137.1 CFM. The HD-750-22H also has a 22 L canister but lists 750 airwatts, 146 inches of water lift, 141.2 CFM, and 65 dB; its hybrid filtration is rated up to 99.97%.

SD-710-22SF vs SD-710-32SF

These two Super Duty models share 710 airwatts, 151.9 inches of water lift, 137.1 CFM, 71 dB, and hybrid self-cleaning filtration up to 99.99%. The SD-710-22SF has a 22 L / 5.8 gal canister, while the SD-710-32SF has a 32 L / 8.45 gal canister.

Central Vacuum vs Portable Vacuum

A central vacuum power unit stays in a garage or basement, so you do not carry the heavy machine from room to room. The exhaust can be vented outside, and cleaning is performed through separately purchased hoses and tools connected to the home's inlets.

Questions Buyers Commonly Ask

Can I use this unit with or without a bag?

Yes. The hybrid filtration system supports operation with a disposable bag or without one. The True HEPA self-cleaning filter must remain installed in both configurations.

Is a hose or attachment kit included?

No hose or cleaning tool kit is listed as included. The hose and attachment kit are sold separately and must match the home's inlets, including whether the system uses low-voltage or electric hose control.

Will it connect to my existing piping?

The unit is designed to fit existing standard 2-inch outside-diameter PVC piping meeting ASTM F2158. A professional should verify the piping, low-voltage wiring, and power-unit location before installation.

How should I care for the True HEPA filter?

Do not wash the True HEPA filter; washing may clog it and void the warranty. Clean or replace the filter whenever the canister is emptied or after every three bag changes, and replace it annually to maintain the warranty.

What electrical service does it need?

The manual calls for a dedicated individual 15 A branch circuit with 110-120 VAC and 60 Hz service. It includes a 72-inch grounded cord, and the manual says not to use extension cords or adapters.

Technical Specifications

Installation Notes

• Install indoors in a well-ventilated, weather-protected location; do not install the power unit outdoors.
• Allow 6 inches of clearance on all sides of the unit.
• Exhaust venting outdoors is recommended when the installation allows it.
• Provide a dedicated individual 15 A branch circuit with 110-120 VAC and 60 Hz service. Do not use an extension cord or adapter.
• Use the included 72-inch grounded cord and have electrical work completed by a qualified electrician; retain the invoice for warranty documentation.
• The unit fits standard 2-inch outside-diameter PVC piping meeting ASTM F2158. Low-voltage wire is needed for the hose on-off switch.

Maintenance Tips

• Empty the canister or replace the disposable bag approximately two or three times per year, depending on use and debris volume.
• Keep the True HEPA filter installed at all times, including when operating with a disposable bag.
• Do not wash the True HEPA filter. Clean or replace it whenever the canister is emptied or after every three bag changes.
• Replace the True HEPA filter once each year to maintain the warranty.

Ideal Buyers

Perfect for:

• Homeowners replacing a central vacuum power unit connected to standard 2-inch outside-diameter PVC piping.
• Households that want the choice of disposable-bag or bagless hybrid operation.
• Buyers who want a True HEPA self-cleaning filter included with the power unit.
• Homeowners seeking 710 airwatts, 151.9 inches of water lift, and 137.1 CFM airflow.
• Residential users prepared to provide a dedicated individual 15 A branch circuit and suitable installation location.

Why Buy from Ace Vacuums

When you purchase from Authorized Nadair Dealer Ace Vacuums, you receive:

• Genuine Nadair central vacuum power units
• Expert help sizing the right unit for your home and piping
• Guidance on matching hoses and attachment kits to your inlets
• Genuine Nadair replacement bags and filters
• Knowledgeable customer support before and after the sale

Available Online & In-Store

The Nadair SD-710-22SF is available online and in-store through Authorized Nadair Dealer Ace Vacuums.

Visit Our Showrooms

• Fairfax, VA: 11110 Main St, Fairfax, VA 22030
• Leesburg, VA: 300 Fort Evans Rd NE, Leesburg, VA 20176

Call 703-997-9292 (ext. 1 Fairfax, ext. 2 Leesburg). Both stores are open 7 days a week to compare central vacuum systems and talk with our specialists.

Comparison Table

Pros and Cons

Pros

• 710 airwatts, 151.9 inches of water lift, and 137.1 CFM airflow
• Hybrid operation allows bagged or bagless use
• Included True HEPA self-cleaning filter filters up to 99.99%
• Rustproof aluminum bottom-load canister with 22 L capacity
• Soft-start/stop technology and a three-second clearing delay
• 15-year residential parts warranty plus 1 year of labor

Cons

• The hose and attachment kit are sold separately.
• Installation requires a dedicated individual 15 A branch circuit.
• The True HEPA filter must not be washed and requires yearly replacement for warranty maintenance.
• Its 71 dB rating is higher than the listed 62-65 dB alternatives.

Frequently Asked Questions

What is the Nadair SD-710-22SF?

It is a Super Duty central vacuum power unit with a 710-airwatt, two-stage commercial-grade motor, a 22 L aluminum canister, and hybrid filtration.

How powerful is this central vacuum system?

Nadair rates it at 710 airwatts, 151.9 inches of water lift, and 137.1 CFM of airflow.

How loud is the SD-710-22SF?

The unit is rated at 71 dB. Noise-isolating foam and an included external muffler are part of its noise-isolation design.

Does it include a central vacuum hose?

No. The unit comes with one disposable bag and one True HEPA filter, but no hose or cleaning tools. Those are sold separately and must match the home's inlets.

Can I use a bagless setup?

Yes. This is a hybrid system that can be used without a disposable bag, provided the True HEPA self-cleaning filter remains installed.

Which bags fit the 22 L canister?

The manual identifies FD-22.5L-3NAD bags for 22 L models. The replacement bags are listed in packs of three.

Can I wash the filter?

No. The True HEPA filter must not be washed because washing may clog it and can void the warranty.

How often should I replace the HEPA filter?

Replace the True HEPA filter every year to maintain the warranty. Clean or replace it when the canister is emptied or after every three bag changes, following the manual guidance.

How often does the canister need to be emptied?

The manual says to empty the canister or replace the bag two or three times per year. Actual timing depends on use and the amount of debris collected.

Will it fit standard central vacuum piping?

It is designed for standard 2-inch outside-diameter PVC piping meeting ASTM F2158. Existing piping and the power-unit location should still be checked before installation.

What electrical circuit is required?

The manual requires a dedicated individual 15 A branch circuit with 110-120 VAC and 60 Hz. Do not use an extension cord or adapter.

Does the unit need low-voltage wiring?

Low-voltage wire is needed for the hose on-off switch. The hose and attachment kit must be selected to match the home's inlet and control configuration.

Where can the power unit be installed?

Install it indoors in a well-ventilated, weather-protected location, not outdoors, with 6 inches of clearance on all sides. Outdoor exhaust venting is recommended when practical.

What does the warranty cover?

The residential warranty provides 15 years on the motor, body, housing, electronic module, and dust bin while you own the unit, plus 1 year of labor. Proof of purchase and an invoice for installation by a qualified electrician are required.

Does soft-start/stop matter?

The system uses soft-start/stop technology intended to extend motor life by 20%. A three-second delay also helps clear the hose and piping after cleaning.

Is the aluminum canister durable?

The canister is described as rustproof, lightweight aluminum with a smooth, polished finish. It has a bottom-load design for removal at the installation location.

Can Ace Vacuums help select the right unit?

Yes. Ace Vacuums can help size the central vacuum power unit for the home and piping run, and help confirm hose, inlet, electrical, and installation requirements.