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Lennox 81W64 ECM Motor 1-Phase 1HP 1050RPM 460V

Special Price $1,011.60 Regular Price $1,122.88
In stock
SKU
81W64
The Lennox 81W64 ECM Motor is an enhanced single part that is used to provide optimal and versatile airflow in industrial and commercial HVAC applications. This motor is more efficient and less noisy than other motors. In contrast to fixed-speed motors, it has variable speeds (maximum of 1050 RPM) depending on the heating or cooling cycle. ECM technology is known to be less noisy than conventional technologies, thus making your commercial building less noisy. This 1 HP motor is powerful enough to ensure that the air is circulated well within your large area. Counter-clockwise rotation (CCWLE) is crucial in making sure that there is a correct flow of air in your HVAC.
Manufacturer:
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Specifications

  • Voltage: 460V
  • Measure: Unit
  • Horsepower: 1 HP
  • Revolutions Per Minute: 1050 RPM
  • Phase: 1-Phase
  • Frequency: 50/60Hz
  • Number of Speeds: Variable
  • Frame Size: 48
  • Motor Mounting Position: Horizontal
  • Motor Mounting Type: Belly Band
  • Shaft Size: 1/2 Inch x 3.92 Inch
  • Motor Rotation: CCWLE
  • Bearing Type: Ball
  • Weight: 20.63lbs
Manufacturer Name: Lennox
Product Number: 81W64
OEM Part Number: 81W64
Product Description: 460V1ph 1Hp 1050Rpm Ecm Motor
Weight:20.63lbs/9357.6g

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Customer Questions
What maintenance is required for the Lennox 81W64 Motor?

Regular inspection and cleaning of dust buildup on the motor housing and fan assembly can maintain efficient operation. Ensure electrical connections are tight and voltage is stable. Proper maintenance reduces overheating risk and improves performance consistency safely.

What are common issues with the Lennox 81W64 Motor?

  • Motor fails to start or intermittent startup.
  • Inconsistent or fluctuating RPM performance.
  • Overheating under load conditions.
  • Bearing wear causing noise vibration.
  • ECM control module failure or communication errors.
  • Wiring faults or loose connections.
  • Sensitivity to voltage fluctuations.

Installation Steps

Step 1: Switch off power supply and confirm system is fully inactive before starting.

Step 2: Remove existing motor and disconnect wiring, labeling each connection point for correct reattachment.

Step 3: Place new motor on mounting bracket and align shaft with coupling.

Step 4: Tighten mounting bolts evenly to secure firm seating and correct alignment.

Step 5: Reconnect wiring with proper insulation checks.

Step 6: Restore power and check rotation direction, steady airflow, and smooth vibration-free operation during initial run.