OEM Compatibility: Direct-fit replacement part for a wide range of Carrier HVAC units

This part is standard in many Copper-Fin and early-model commercial water heaters

OEM Precision: Genuine ClimateMaster S17S0031N01 ensures the 10K Ohm resistance curve matches the control board logic for accurate freeze protection

Reduced Noise: Minimizes audible harmonics and "chattering" common with non-OEM or misaligned aftermarket wheels

Lochinvar & A.O. Smith 100277758 Impeller 320788-704 OEM Compatibility: Direct-fit replacement partThe Lochinvar & A. O. Smith 100277758 Impeller is a precision engineered 4. 75 inch plastic component designed for high efficiency hydraulic systems. As the 100277758 direct replacement for 100133559, this part ensures seamless compatibility with Lochinvar boiler pump systems and A. O. Smith water heaters. For technicians servicing high efficiency fire tube boilers or commercial water heaters, maintaining proper fluid velocity is critical for heat