When replacing a fixed-speed fan motor with this multi-tap model

Always verify your specific unit heater model number for exact compatibility

Smith 100112338 and Lochinvar 9007890005

providing a precise fit and long-term durability in high-cycle environments

which is essential for vibration dampening and reducing mechanical resonance during high-static operation

Resideo ZD24X12TZ Damper R-407C When replacing a fixed-speed fanThe Resideo ZD24X12TZ is an industrial grade parallel blade zone damper designed for precision airflow regulation in forced air zoning systems. Built with a robust extruded aluminum frame and matching blades, this 12 inch high by 24 inch wide rectangular unit utilizes a 24Vac synchronous motor mounted on the 12 inch side for high torque performance. This two position damper is configured for power closed spring return open operation, ensuring a fail