vibration during the pre-purge cycle

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protecting the heat exchanger from improper venting

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Trane FAN3753 Fan Blade L99H008 vibration during the pre-purge cycleThe Trane FAN3753 Fan Blade is a precision engineered OEM replacement part designed for high performance condensing units and heat pump systems. Featuring a 19" diameter and a 33 degree pitch, this 3 blade assembly is optimized for maximum CFM output while maintaining static pressure balance. The CCW rotation (counter clockwise) and 1 2" bore hub ensure a direct fit for standard motor shafts, eliminating the need for field modifications. Built from