Ensure the intake holes face directly into the airflow

This OEM replacement part operates as an automatic reset thermal disc

a certified OPD is required to meet ANSI Z21

Its primary function is to verify that the inducer motor is creating sufficient negative pressure to safely vent combustion gases before allowing the ignition sequence to proceed

constant-duty solution specifically engineered for Aero Burner applications

Carrier 342890-75101 Housing Kit 321894-709 Ensure the intake holes faceThe Carrier 342890 75101 Housing Kit is a critical OEM replacement assembly designed to restore factory spec airflow in residential fan coil units and central air systems. This comprehensive blower housing and wheel kit integrates a precision balanced centrifugal impeller within a high durability housing, ensuring optimal static pressure and volumetric flow rates across heating and cooling coils. As a direct replacement for legacy part numbers