Aaon R82890 Temp Sensor Els PW 17895 and QMark heating units requiring

and QMark heating units requiring a 4520-0015-000 specification

this differential air pressure switch is the direct spec-match required to restore safe boiler operation without the risks of using non-calibrated aftermarket alternatives

This blade is designed for Counter-Clockwise (CCW) rotation when facing the discharge side

Common failure points include carbon buildup on the electrode

Aaon R82890 Temp Sensor Els PW 17895 and QMark heating units requiringThe Aaon R82890 Duct Temp Sensor is a high precision HVAC OEM replacement part engineered specifically for Aaon rooftop units and air handling systems. As a 12 inch duct temperature sensor, this component is critical for monitoring supply air temperature and return air temperature, providing real time data to the DDC controller to maintain tight climate tolerances. The probe features an epoxy sealed thermistor to prevent moisture migration, ensuring