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Fasco A164 Draft Inducer Blower Motor 115V 3000 RPM Replacement for Lennox 46K4101 67M5401

Fasco A164 draft inducer blower motor 115V 3000 RPM replacement for Lennox 46K4101 and Fasco 7021-series furnaces
Fasco Draft Inducer Blower Motor, 115V, 3000 RPM
 
List Price: $150.00
: $82.49
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Part Number: A164
Manufacturer: Fasco

Quantity in Stock :33

Availability: In Stock
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Fasco115V / 3000 RPMUL & CSA ListedFasco A164 Draft Inducer Blower Motor -- Direct Replacement for Lennox and Fasco 7021-Series Furnaces

The Fasco A164 is a direct-replacement draft inducer blower motor engineered to restore proper combustion air flow in Lennox and Fasco furnaces. Rated at 115V, 3000 RPM, and 0.34 amps, this shaded-pole motor ships ready to install with a 6-inch lead and socket terminal connector. Built-in thermal overload protection and Class B insulation make it a reliable long-term replacement for a wide range of OEM part numbers.

Restore Proper Draft and Combustion Efficiency

A failed or sluggish draft inducer motor is one of the most common causes of furnace lockout codes and ignition failures. The A164 replaces the factory motor on numerous Lennox and Fasco 7021-series models without modification -- same 3.3-inch frame diameter, same socket terminal wiring, same mounting footprint.

This is a shaded-pole, single-phase induction motor with sleeve bearings, designed for the continuous-duty, high-temperature environment of a forced-combustion furnace inducer assembly. It carries both UL and CSA listings, meeting North American safety standards for furnace components.

Direct OEM Replacement

Drops in for 20+ Fasco, Lennox, and Emerson part numbers with no wiring adapters or bracket modifications required.

Built-In Thermal Protection

Integrated thermal overload protector shuts the motor down before damage occurs if airflow is restricted or ambient temps spike.

Class B Insulation

Rated for continuous operation up to 104 deg F (40 deg C) ambient, appropriate for furnace cabinet environments.

UL and CSA Listed

Meets North American electrical safety certification requirements for residential and light-commercial HVAC applications.

Wiring and Connector Details

The A164 ships with 6-inch leads terminated in a socket-style connector that mates directly with the OEM wiring harness on the Lennox and Fasco furnace models listed below. No splicing or crimping is required for a standard swap. Verify lead length and connector type against your existing harness before installation if your furnace has been previously serviced with a non-OEM replacement.

Sleeve Bearing Design: Sleeve bearings are factory-lubricated and suited to the intermittent duty cycles typical of residential furnace inducer motors. Unlike ball-bearing motors, sleeve-bearing units are quieter at low speeds and do not require periodic re-lubrication in normal service.

Compatible Replacement Part Numbers

The following OEM and cross-reference part numbers are directly replaced by the Fasco A164 (NBK Parts 12165):

  • Fasco 7021-10108
  • Fasco 7021-11042
  • Fasco 7021-9242
  • Fasco 7021-9311
  • Fasco 7021-9455
  • Fasco 7021-9593
  • Fasco 7021-9640
  • Fasco 7021-9657
  • Emerson 3120
  • Lennox 46K4101
  • Lennox 67M5401
  • Lennox 7021-10108
  • Lennox 7021-11042
  • Lennox 7021-9242
  • Lennox 7021-9311
  • Lennox 7021-9455
  • Lennox 7021-9593
  • Lennox 7021-9640
  • Lennox 7021-9657
  • Lennox 85L4901
Also Known As: This motor is also cataloged under NBK Parts number 12165. The RVUpgradeStore SKU is 12166. Both reference the same Fasco A164 unit.

Installation Tips

Before You Install:
  • Disconnect power to the furnace at the breaker before removing the inducer assembly.
  • Note the rotation direction of the original motor before removal -- confirm the A164 matches your application.
  • Inspect the inducer wheel (squirrel cage) for cracks or imbalance while the motor is out; replace if worn.
  • Confirm the socket connector on your harness matches the 6-inch lead connector on this motor.
  • After installation, cycle the furnace and verify the inducer reaches operating speed before the igniter fires.

Electrical Specifications

Voltage115V AC
Frequency60 Hz
Current Draw0.34 amps
Speed3000 RPM
PhaseSingle phase
Motor TypeShaded pole

Physical Specifications

Frame Diameter3.3 inches
Lead Length6 inches
Connector TypeSocket terminal
Bearing TypeSleeve bearing
Weight5 lbs

Thermal and Insulation Ratings

Insulation ClassClass B
Thermal ProtectionBuilt-in automatic overload
Max Ambient Temperature104 deg F (40 deg C)

Certifications and Standards

Safety ListingsUL Listed, CSA Listed
Application TypeDraft inducer / combustion air

Part Number Cross-Reference

Fasco ModelA164
NBK Parts Number12165
Store SKU12166
Primary OEM CrossLennox 46K4101, Lennox 67M5401
Emerson CrossEmerson 3120
Important Information
  • This motor is rated for 115V AC only -- do not connect to 240V circuits.
  • Always disconnect power at the breaker before servicing the inducer assembly.
  • Verify rotation direction matches your existing inducer wheel before final installation.
  • Sleeve bearing design is not suitable for applications requiring continuous high-speed or vertical-shaft mounting outside normal furnace configurations.
  • Maximum ambient operating temperature is 104 deg F (40 deg C) -- do not install in enclosures that exceed this limit.
  • The inducer wheel (squirrel cage blower) is NOT included -- this listing covers the motor only.