AMETEK Lamb 122685 Vacuum Motor for MD Central Vacuum – Part# 199B2

AMETEK Lamb 122685 Vacuum Motor for MD Central Vacuum – Part# 199B2

Available: In Stock
$215.30
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Quick Summary

This new 122685 vacuum motor is an AMETEK Lamb replacement motor used in some central vacuum brands and models, including certain MD central vacuum units. It replaces several older motor numbers and is listed for specific MD power units.

Available from Ace Vacuums, with help matching parts to your MD central vacuum system at our Fairfax and Leesburg, VA showrooms.

Quick Highlights

  • New AMETEK Lamb motor, not rebuilt
  • Replaces 119914, 119956, and 119992
  • 2-stage motor
  • 120 volt, 50-60 hertz
  • Listed for MD K and MD M575H (120V)
  • May be marked 2685 or 12-2685

Product Overview

The 122685 vacuum motor is a replacement motor for some central vacuum systems and is listed for MD central vacuum models MD K (120V) and MD M575H (120V). It is a new AMETEK Lamb motor, not a rebuilt unit.

This motor replaces Lamb part numbers 119914, 119956, and 119992. It has a 2-stage design and the recorded specifications include 120 volts, 130 inches of waterlift, 128 CFM, and 574 airwatts.

Common signs that a motor may need replacement include a mini breaker popping, electrical smell, excessive blue sparks from the motor top, a click without startup, or a motor that shuts down on its own and later works again.


Key Features

  • New replacement motor: This is a brand new AMETEK Lamb motor rather than a rebuilt motor.
  • Replaces older motor numbers: The 122685 replaces 119914, 119956, and 119992 motors.
  • Listed for select MD units: This part is listed for MD central vacuum models MD K (120V) and MD M575H (120V).
  • 2-stage performance: The recorded specifications identify this as a 2-stage vacuum motor.
  • Common service part: The motor may be marked as 2685 or 12-2685 when you inspect the original unit.
  • Brushes can be replaced: The carbon motor brushes on the Lamb 122685 can be replaced before the motor is at the end of its life.

MD Compatibility

This part is listed as the match for these MD central vacuum power units:

  • MD K (120V)
  • MD M575H (120V)

Check the model number on your power unit label before ordering. Our team can confirm the match if you are unsure.


Technical Specifications

Specification Details
Brand AMETEK Lamb
Part Number 199B2
Motor Number 122685
Fan Stages 2
Bottom Diameter 5.7 in
Voltage 120
Hertz 50-60
Height 7-1/2 in
Bolt Height 3 in
Waterlift 130 in
CFM 128
AirWatts 574
Amps 15.2
Replaces 119914, 119956, 119992
May Be Marked 2685 or 12-2685
MD Models This Part Fits MD K (120V), MD M575H (120V)
Compatibility Note AirMaster, Modern Day, SilentMaster, Flo-Master, Beam and Vacuflo
Model Note Fits Model S44, A525h Power unit
Authorized Dealer Ace Vacuums

Best For

  • Replacing a worn 122685 motor in an MD central vacuum
  • MD K (120V) and MD M575H (120V) power units
  • Replacing older motors numbered 119914, 119956, or 119992
  • Fixing issues such as blue sparks, electrical smell, or shutdown after running

Not Ideal For

  • Not for systems outside the listed fit information without confirming compatibility
  • Not the right fix if the relay is the problem and the motor is still working
  • Motor brush replacement may be an option before replacing the full motor

Why Buy from Ace Vacuums

When you purchase from Ace Vacuums, you receive:

  • Central vacuum parts matched to your MD system
  • Help choosing the right hose, tools and inlet parts
  • Knowledgeable support before and after the sale
  • Shipping or pickup at our Fairfax and Leesburg showrooms

Available Online & In-Store

The AMETEK Lamb 122685 Vacuum Motor for MD Central Vacuum is available online and in-store through 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).


Quick Summary

This new 122685 vacuum motor is an AMETEK Lamb replacement motor used in some central vacuum brands and models, including certain MD central vacuum units. It replaces several older motor numbers and is listed for specific MD power units.

Available from Ace Vacuums, with help matching parts to your MD central vacuum system at our Fairfax and Leesburg, VA showrooms.

Quick Highlights

  • New AMETEK Lamb motor, not rebuilt
  • Replaces 119914, 119956, and 119992
  • 2-stage motor
  • 120 volt, 50-60 hertz
  • Listed for MD K and MD M575H (120V)
  • May be marked 2685 or 12-2685

Product Overview

The 122685 vacuum motor is a replacement motor for some central vacuum systems and is listed for MD central vacuum models MD K (120V) and MD M575H (120V). It is a new AMETEK Lamb motor, not a rebuilt unit.

This motor replaces Lamb part numbers 119914, 119956, and 119992. It has a 2-stage design and the recorded specifications include 120 volts, 130 inches of waterlift, 128 CFM, and 574 airwatts.

Common signs that a motor may need replacement include a mini breaker popping, electrical smell, excessive blue sparks from the motor top, a click without startup, or a motor that shuts down on its own and later works again.


Key Features

  • New replacement motor: This is a brand new AMETEK Lamb motor rather than a rebuilt motor.
  • Replaces older motor numbers: The 122685 replaces 119914, 119956, and 119992 motors.
  • Listed for select MD units: This part is listed for MD central vacuum models MD K (120V) and MD M575H (120V).
  • 2-stage performance: The recorded specifications identify this as a 2-stage vacuum motor.
  • Common service part: The motor may be marked as 2685 or 12-2685 when you inspect the original unit.
  • Brushes can be replaced: The carbon motor brushes on the Lamb 122685 can be replaced before the motor is at the end of its life.

MD Compatibility

This part is listed as the match for these MD central vacuum power units:

  • MD K (120V)
  • MD M575H (120V)

Check the model number on your power unit label before ordering. Our team can confirm the match if you are unsure.


Technical Specifications

Specification Details
Brand AMETEK Lamb
Part Number 199B2
Motor Number 122685
Fan Stages 2
Bottom Diameter 5.7 in
Voltage 120
Hertz 50-60
Height 7-1/2 in
Bolt Height 3 in
Waterlift 130 in
CFM 128
AirWatts 574
Amps 15.2
Replaces 119914, 119956, 119992
May Be Marked 2685 or 12-2685
MD Models This Part Fits MD K (120V), MD M575H (120V)
Compatibility Note AirMaster, Modern Day, SilentMaster, Flo-Master, Beam and Vacuflo
Model Note Fits Model S44, A525h Power unit
Authorized Dealer Ace Vacuums

Best For

  • Replacing a worn 122685 motor in an MD central vacuum
  • MD K (120V) and MD M575H (120V) power units
  • Replacing older motors numbered 119914, 119956, or 119992
  • Fixing issues such as blue sparks, electrical smell, or shutdown after running

Not Ideal For

  • Not for systems outside the listed fit information without confirming compatibility
  • Not the right fix if the relay is the problem and the motor is still working
  • Motor brush replacement may be an option before replacing the full motor

Why Buy from Ace Vacuums

When you purchase from Ace Vacuums, you receive:

  • Central vacuum parts matched to your MD system
  • Help choosing the right hose, tools and inlet parts
  • Knowledgeable support before and after the sale
  • Shipping or pickup at our Fairfax and Leesburg showrooms

Available Online & In-Store

The AMETEK Lamb 122685 Vacuum Motor for MD Central Vacuum is available online and in-store through 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).


Frequently Asked Questions

Will this fit my MD central vacuum?

This motor is listed for MD central vacuum models MD K (120V) and MD M575H (120V). If your unit is different, confirm your model and original motor number before ordering.

Is this motor new or rebuilt?

It is a brand new AMETEK Lamb motor, not a rebuilt motor.

What motor numbers does the 122685 replace?

It replaces 119914, 119956, and 119992 motors.

What are the main electrical specs?

The listed specs are 120 volts, 50-60 hertz, and 15.2 amps.

How can I identify this motor?

The motor may be marked 2685 or 12-2685 in addition to 122685.

What are signs that the motor may need replacement?

Signs listed include a mini breaker popping, electrical smell, excessive blue sparks from the motor top, hearing only a click, or the motor shutting down on its own and working again later.

Could the problem be something other than the motor?

Yes. If you do not hear a click, the relay most likely needs to be replaced and the motor may be fine. The description also notes that the mini breaker can fail along with the motor in some cases.

Can I replace just the brushes instead of the whole motor?

Yes. The Lamb 122685 vacuum motor has carbon motor brushes that can be replaced, and the description notes this should be done before the motor is on its last legs.

Visit Our Showrooms

Check real-time traffic and travel time from your location in VA, DC, or MD.

📍 AceVacuums Fairfax (DMV Hub)

Address: 11110 Main St, Fairfax, VA 22030
Landmark: Opposite Havertys Furniture Store
Best for: Bethesda, Potomac, Arlington, NW Washington D.C.

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📍 AceVacuums Leesburg

Address: 300 Fort Evans Rd NE, Suite 104, Leesburg, VA 20176
Landmark: Next to Home Depot in Leesburg
Best for: Ashburn, Sterling, Frederick MD, Loudoun County

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Shipping, Return & Refund Policy

Shipping Policy

In-stock merchandise generally ships from our Leesburg, Virginia location within 3–5 business days. Processing time is separate from carrier transit time and is not a guaranteed delivery date. Weekends and holidays can affect timing. Special-order, backordered or unavailable items may take longer; contact us to confirm timing before purchase when a deadline matters.

Shipping options and charges are shown at checkout. After dispatch, follow the carrier's tracking updates. Weather, carrier delays, order verification and inventory confirmation may affect delivery. Inspect packages promptly and retain packaging if there is damage or an incorrect or missing item.

Returns and refunds

Eligible unused items have a 30-calendar-day return request window for refunds or exchanges, measured from delivery or in-store purchase. Return authorization is required. Final-sale exclusions, the 15% restocking fee for change-of-mind returns and shipping responsibilities are explained in our Return and Refund Policy. That policy is the governing source for return eligibility and fees.

For shipping or return help, email sales@acevacuums.com or call 703-997-9292.


30-Day Returns, Refunds and Exchanges

Updated September 27, 2026. Request a return for an eligible unused item within 30 calendar days of delivery (or purchase for items collected in store). Eligible returns may be refunded to the original payment method or exchanged, subject to availability. The same 30-day request window applies to both refunds and exchanges; there is no separate seven-day or 15-day refund deadline.

Eligibility and authorization

Items must be unused, clean, complete and in their original packaging with all accessories, manuals and proof of purchase. Contact sales@acevacuums.com or 703-997-9292 before sending anything back. Include your order number, item and reason for return. We will confirm eligibility, charges and return instructions. Unapproved or cash-on-delivery returns are not accepted.

Fees and shipping

For an approved change-of-mind return, a 15% restocking fee applies to the returned merchandise price. Original shipping charges are not refundable and the customer pays return shipping. These charges do not apply to an approved return caused by our shipping error or a damaged/defective item claim. Contact us first so we can arrange the appropriate remedy and shipping instructions. Do not assume a prepaid label is included.

Final-sale and excluded items

Air purifiers; discounted, clearance, trade-in, holiday-sale and price-matched purchases; gift cards; custom or special-order products; electrical parts; used or installed items; opened cleaning solutions; and used bags, filters, belts or other consumables are not eligible for change-of-mind returns. Other items clearly marked final sale at purchase are also excluded. An opened box alone does not disqualify an otherwise eligible unused, complete item, but consumables and cleaning solutions must remain unopened.

Damaged, defective, incorrect or missing items; recalls

Inspect your order promptly and contact us as soon as you discover a problem, with your order number and photos where helpful. Keep the packaging. Change-of-mind exclusions and deadlines do not remove applicable defect, warranty, recall or statutory rights. Warranty coverage requires evaluation under the manufacturer's terms; dealer status does not guarantee free repair. Recalled products must follow the manufacturer's recall process.

Refund timing and exchanges

After we receive and inspect the return, we will notify you of approval or the reason it cannot be accepted. Approved refunds are issued to the original payment method within 10 business days of approval; your bank may take additional time to post them. Contact us if more than 15 business days have passed since approval. Exchanges require authorization and replacement availability; any price difference and applicable charges will be explained before processing.

Applicable rights and earlier purchases

This policy applies to online and in-store purchases. We will honor more favorable written return terms provided with an earlier purchase. Applicable consumer rights remain unaffected. Where the European Union 14-day cancellation right applies, customers may cancel or return eligible orders within 14 days of receipt, subject to applicable legal exceptions, without giving a reason.


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