Lennox 78F90 (78F9001) blower motor is a genuine OEM replacement designed to restore proper airflow and dependable performance in compatible Lennox HVAC systems. This PSC blower motor delivers 1/2 HP output and operates on 208–230 volts, 1 phase, 60 Hz, producing a consistent 1075 RPM for efficient air circulation in residential and light commercial applications.

Built to Lennox factory specifications, this motor features a 48 frame size with a 5.63-inch diameter and a horizontal mounting position using a torsion flex bracket for secure installation. The 3-speed design allows proper airflow control, while the CCWLE rotation and sleeve bearings provide smooth, quiet operation and long service life. It uses a 10 MFD 370 VAC capacitor and includes a 1/2" x 2.5" shaft for standard blower wheel compatibility.

Lennox 78F90 replaces earlier versions 78F90 and 78F9001, making it an exact-fit solution for system repairs or motor replacement without modification. Ideal for maintaining original system efficiency, airflow balance, and reliability, this OEM blower motor ensures consistent performance and long-term durability in demanding HVAC environments.