A veteran technician will check for continuity across the terminals when the system is cool

this unit is specifically machined with a 1/2" bore

ensuring exact fitment and stroke alignment

Technicians should inspect the gasket during any burner assembly service

Common Questions What model series is the Lennox 33M14 compatible with

Carrier 48TM400646 Blower Assembly 320735-701 A veteran technician will checkThe Carrier 48TM400646 Blower Assembly is a specialized IFM Blower Assembly engineered for high static internal fan motor applications. Designed specifically for Carrier commercial rooftop units, this heavy duty blower housing provides the exact structural tolerances required to maintain static pressure and system efficiency. As a genuine OEM HVAC replacement part, this 48TM400646 assembly ensures precise wheel to housing alignment, reducing vibration