Lennox P/N 624623-09 – Genuine OEM ECM Constant Torque Blower Motor (3/4 HP, 1050 RPM, 208-230V)

The Lennox 624623-09 is a Genuine Original Equipment Manufacturer (OEM) Constant Torque ECM blower motor, also identified by the Catalog Number 103554-05. This 3/4 horsepower (HP) motor is the primary air handler motor for high-efficiency Lennox, Armstrong, and Ducane systems, engineered to maintain precise airflow across varying static pressures while drastically reducing energy consumption compared to traditional PSC motors. 

As a factory-programmed Genuine OEM component, the 103554-05 ensures exact electrical and mechanical compatibility with your system to maintain original safety certifications and performance. It features advanced ECM technology and a robust 48-frame design with five-speed tap configurations, allowing the system's control board to select the optimal CFM (Cubic Feet per Minute) for various heating and cooling demands.

Key Features and Function:

• Integrated ECM Module: Features a factory-programmed control module for precise speed and torque management (X13 type motor).
• High-Efficiency Operation: Consumes significantly less power than standard motors, supporting high SEER and AFUE ratings.
• Genuine OEM Reliability: Official Lennox replacement built for exact mechanical and electrical fitment and long-term durability.
• 5-Speed Versatility: Equipped with five discrete speed taps to accommodate various system tonnages and ductwork requirements. 

Product Details and Key Specifications:

• Part Number: 624623-09
• Catalog #: 103554-05
• Manufacturer: Lennox (Genteq)
• Part Type: ECM Blower Motor & Module (Constant Torque, X13)
• Horsepower: 3/4 HP
• Voltage: 208-230 VAC
• Amps: 6.1 FLA (approx)
• RPM: 1050 RPM (Nominal, 5 Speeds)
• Frame Size: 48
• Rotation: Reversible
• Shaft Size: 1/2 inch Diameter x 4 inches Length
• Gross Shipping Weight: 15.0 LB 

🛠️ HVAC Depot Pro Tip: The "ECM Surge Protector" Recommendation

ECM motors are highly sensitive to power fluctuations, surges, and lightning strikes. A single voltage spike can destroy the electronic control module integrated into the motor's end cap. To protect your investment in the expensive 624623-09 motor, it is highly recommended that you install an inline ECM surge protector at the time of installation. Also, check your existing blower wheel for balance and dust buildup; vibration is another leading cause of premature ECM failure. 

Cross-Reference:

The 624623-09 is a direct OEM replacement for the following part numbers: 

• OEM & Catalog Numbers: 624623-09, 103554-05, 10355405.
• Manufacturer Cross: Genteq 5SME39SL0773, Broad-Ocean YDKL-620-6-2.

Extensive Model Compatibility List:

Note: Use 'CTRL+F' to search for your specific model: 

• Lennox Series: Compatible with various EL195, EL296, and SLP98 series furnaces.
• EL195DF090XE48C
• EL195UH080NE48C
• EL195UH080NE48CK
• EL195UH090XE48C
• EL196DF090XE48C
• EL196UH090XE48C
• EL196UH090XE48CK
• EL296DF090XE48C
• EL296UH090XE48C
• EL297DF090XE48C
• EL297DF090XE48CK
• ML196DF090XE48C
• ML196DF090XE48CK
• ML196UH090XE48C
• Allied Air Brands: Direct fit for various AirEase, Armstrong, Concord, and Ducane units requiring 3/4 HP ECM motors.