Lennox 621175-06, ECM Constant Torque Blower Motor, Pre-Programmed, 3/4 HP, 208-230 VAC 1 Ph 60 Hz, 5 Speed, 300-1200 RPM

 

Lennox 621175-06 ECM Constant Torque Blower Motor is a factory-preprogrammed replacement motor designed to deliver consistent airflow performance across a wide range of residential HVAC applications. This 3/4 HP ECM constant torque motor operates on 208–230 VAC, single-phase, 60 Hz power and is engineered to automatically adjust torque output to maintain proper airflow as static pressure changes within the system.

Featuring a 5-speed configuration with an operating range of approximately 300 to 1200 RPM, the Lennox 621175-06 provides flexible airflow control for heating and cooling modes while improving overall system efficiency. The electronically commutated motor (ECM) design significantly reduces electrical consumption compared to traditional PSC motors, helping lower operating costs while maintaining reliable performance.

This blower motor comes pre-programmed from the factory, eliminating the need for on-site programming or setup and allowing for faster, error-free installation. Built for durability and long service life, it is ideal for use in Lennox air handlers, furnaces, and compatible HVAC systems requiring a constant torque ECM motor.

 

Specifications:

 

Brand   Lennox

Catalog Number   18Y38

Model/Part Number   621175-06

Base Unit of Measure   EACH

Material Description   621175-06 Blower Motor, ECM (X13), Constant Torque, 3/4HP, 208/230V

EAN / UPC   66255153855

Horsepower  3/4 HP

Gross Weight   15 LB

Type   ECM - Programmed

RPM   300-1200 RPM

Motor HP   3/4 HP

Number of Speeds   5 Speed

Frame Size   48

Motor Mounting Position    Horizontal

Motor Mounting Type   Belly Band

Motor Voltage   208-230 VAC 1 Ph 60 Hz

Shaft Size   1/2 x 3.9 IN

Rotation    CCWLE

Bearing Type   Ball

 

The Lennox 621175-06 ECM blower motor is a dependable choice for HVAC professionals and homeowners seeking improved energy efficiency, stable airflow, and OEM-quality performance in a direct replacement motor.

Key features include constant torque ECM technology, 3/4 HP output, 208–230 VAC single-phase operation, five selectable speeds, and factory pre-programming for hassle-free installation.