including heat pumps with two stages of compressor operation and an auxiliary heat stage

This component is a direct drop-in for several 160-degree high-limit applications where HVAC furnace safety and system optimization are the priority

this specific kit is configured for 24V gas-fired hydronic systems

For contractors maintaining older equipment

The AFS-442 is technically identical to the AFS-442-3

Resideo ZD8X6TZ Damper 320734-701 including heat pumps with twoThe Resideo ZD8X6TZ is a heavy duty, 8" x 6" rectangular zone damper engineered for precise airflow management in multizone forced air systems. Built as a power closed spring return open unit, this damper ensures a fail safe normally open state, providing reliable ventilation even during power interruptions. It features a high torque, 24Vac synchronous motor mounted on the 6" side, delivering a consistent 30 second power closure and a rapid 10 second