Industrial SFMMH502VB Furnace Air Blower Motor

Trane SFMMH502VB Direct Drive Furnace Blower Motor, 208-230V, 60Hz, 1/6-1/2 HP, 1075 RPM, 1PH, Open Air Over (OAO) enclosure. This multi-HP, direct-drive blower motor is designed to replace OEM furnace motors in direct-drive blower assemblies found in gas or oil furnaces and some air-handling units, providing consistent air movement across heating cycles. It operates on a single-phase power supply and draws approximately 2.7 A, with a horsepower range from 1/6 to 1/2 HP to cover a spectrum of blower sizes. The motor runs at 1075 RPM, typically at 208-230V and 60 Hz, and offers four speeds to fine-tune blower performance to match thermostat setpoints and ductwork. The SFMMH502VB variant is explicitly listed in Trane’s motor line as a direct-drive, multi-HP option, intended for replacement in compatible Trane SF motor applications, and is commonly used in residential and light commercial HVAC equipment that relies on a compact, direct-drive blower solution. When selecting this motor, verify the original equipment’s compatibility with Trane SF series direct-drive blowers and ensure the enclosure type (OAO) and shaft configuration align with the existing assembly to maintain proper fit and airflow.