a mid-season replacement is recommended to prevent scale from clogging the distributor tray

ensuring the precise physical fit and electrical calibration required for safety-rated circuits

Technicians should check for a "Pressure Switch Open" fault code on the furnace control board

High pressure rating: Certified for 650 PSIG

which can round out the bore or bend the arm

Reznor 100747 Blower Shaft Els PW 17895 a mid-season replacement is recommendedThe Reznor 100747 Blower Shaft is a critical OEM replacement component designed to maintain the mechanical integrity of your HVAC air delivery system. As a veteran grade replacement blower shaft, this part is engineered for precision fitment within Reznor unit heaters and air handlers, ensuring efficient torque transfer from the drive motor to the blower wheel. A compromised shaft can lead to catastrophic bearing failure or wheel imbalance; the 100747