Lennox 89W74 Motor
Ensure reliable airflow in residential or commercial air handlers with the Lennox 89W74 Blower Motor. This heavy-duty 1/3 HP PSC motor is a direct OEM replacement for Lennox part number 104849-02, specifically engineered for 208-240V single-phase HVAC systems. Built with a robust 48-frame rolled steel body and aluminum flanges, it provides superior structural integrity and heat dissipation in demanding duty cycles. The three-speed operation (1050 RPM) allows technicians to precisely calibrate CFM across low, medium, and high speed taps to match system static pressure and ductwork requirements. Featuring a 1/2-inch x 4-inch shaft and ball-bearing construction, this direct drive blower motor minimizes mechanical friction for quieter operation and long-term stability. The permanent split capacitor (PSC) design requires a 7.5 MFD 370 VAC capacitor for peak startup torque and running efficiency. Verify rotation (CCWLE) and mounting compatibility with standard belly band brackets before field installation.
Key Benefits for HVAC Professionals
- Optimized Compatibility: Replaces legacy Lennox part numbers 104849-02 and 66703100 without modification.
- Precision Airflow Control: Features 3-speed taps to accommodate varying heating and cooling CFM demands.
- Industrial-Grade Build: Rolled steel frame and ball bearings ensure durability in high-static environments.
- Simplified Wiring: Standard 208-240V 1ph configuration matches most Lennox residential air handlers and furnaces.
- Reliable Performance: Rated at 1.6 Amps and 1050 RPM for consistent torque and static pressure recovery.
Common Technical Questions
Which capacitor is required for the Lennox 89W74 motor?
This motor is designed to operate with a 7.5 MFD / 370 VAC capacitor. Using an incorrectly rated capacitor may lead to winding overheating or failure to start under load.
Can I use this 3-speed motor to replace a 2-speed or 1-speed motor?
Yes, provided the physical frame size (48 frame) and electrical specifications (1/3 HP, 208-240V) match. Simply isolate and cap any unused speed leads to prevent electrical shorts.
How do I verify the rotation direction?
The 89W74 is rated for CCWLE (Counter-Clockwise Lead End) rotation. Always confirm your blower wheel's required rotation before securing the motor to the housing.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $257.22
-65%$257.22
$90.03Lennox 89W74 Motor
Ensure reliable airflow in residential or commercial air handlers with the Lennox 89W74 Blower Motor. This heavy-duty 1/3 HP PSC motor is a direct OEM replacement for Lennox part number 104849-02, specifically engineered for 208-240V single-phase HVAC systems. Built with a robust 48-frame rolled steel body and aluminum flanges, it provides superior structural integrity and heat dissipation in demanding duty cycles. The three-speed operation (1050 RPM) allows technicians to precisely calibrate CFM across low, medium, and high speed taps to match system static pressure and ductwork requirements. Featuring a 1/2-inch x 4-inch shaft and ball-bearing construction, this direct drive blower motor minimizes mechanical friction for quieter operation and long-term stability. The permanent split capacitor (PSC) design requires a 7.5 MFD 370 VAC capacitor for peak startup torque and running efficiency. Verify rotation (CCWLE) and mounting compatibility with standard belly band brackets before field installation.
Key Benefits for HVAC Professionals
- Optimized Compatibility: Replaces legacy Lennox part numbers 104849-02 and 66703100 without modification.
- Precision Airflow Control: Features 3-speed taps to accommodate varying heating and cooling CFM demands.
- Industrial-Grade Build: Rolled steel frame and ball bearings ensure durability in high-static environments.
- Simplified Wiring: Standard 208-240V 1ph configuration matches most Lennox residential air handlers and furnaces.
- Reliable Performance: Rated at 1.6 Amps and 1050 RPM for consistent torque and static pressure recovery.
Common Technical Questions
Which capacitor is required for the Lennox 89W74 motor?
This motor is designed to operate with a 7.5 MFD / 370 VAC capacitor. Using an incorrectly rated capacitor may lead to winding overheating or failure to start under load.
Can I use this 3-speed motor to replace a 2-speed or 1-speed motor?
Yes, provided the physical frame size (48 frame) and electrical specifications (1/3 HP, 208-240V) match. Simply isolate and cap any unused speed leads to prevent electrical shorts.
How do I verify the rotation direction?
The 89W74 is rated for CCWLE (Counter-Clockwise Lead End) rotation. Always confirm your blower wheel's required rotation before securing the motor to the housing.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
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Description
Ensure reliable airflow in residential or commercial air handlers with the Lennox 89W74 Blower Motor. This heavy-duty 1/3 HP PSC motor is a direct OEM replacement for Lennox part number 104849-02, specifically engineered for 208-240V single-phase HVAC systems. Built with a robust 48-frame rolled steel body and aluminum flanges, it provides superior structural integrity and heat dissipation in demanding duty cycles. The three-speed operation (1050 RPM) allows technicians to precisely calibrate CFM across low, medium, and high speed taps to match system static pressure and ductwork requirements. Featuring a 1/2-inch x 4-inch shaft and ball-bearing construction, this direct drive blower motor minimizes mechanical friction for quieter operation and long-term stability. The permanent split capacitor (PSC) design requires a 7.5 MFD 370 VAC capacitor for peak startup torque and running efficiency. Verify rotation (CCWLE) and mounting compatibility with standard belly band brackets before field installation.
Key Benefits for HVAC Professionals
- Optimized Compatibility: Replaces legacy Lennox part numbers 104849-02 and 66703100 without modification.
- Precision Airflow Control: Features 3-speed taps to accommodate varying heating and cooling CFM demands.
- Industrial-Grade Build: Rolled steel frame and ball bearings ensure durability in high-static environments.
- Simplified Wiring: Standard 208-240V 1ph configuration matches most Lennox residential air handlers and furnaces.
- Reliable Performance: Rated at 1.6 Amps and 1050 RPM for consistent torque and static pressure recovery.
Common Technical Questions
Which capacitor is required for the Lennox 89W74 motor?
This motor is designed to operate with a 7.5 MFD / 370 VAC capacitor. Using an incorrectly rated capacitor may lead to winding overheating or failure to start under load.
Can I use this 3-speed motor to replace a 2-speed or 1-speed motor?
Yes, provided the physical frame size (48 frame) and electrical specifications (1/3 HP, 208-240V) match. Simply isolate and cap any unused speed leads to prevent electrical shorts.
How do I verify the rotation direction?
The 89W74 is rated for CCWLE (Counter-Clockwise Lead End) rotation. Always confirm your blower wheel's required rotation before securing the motor to the housing.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
