Is this part required for all CC5AXA series air handlers

If your control board was recently replaced with a direct-drive 80V version

utilizing standardized wiring terminals for reliable electrical continuity

Built to comply with California Title 24 and ASHRAE equipment standards

High Torque Output: Rated at 140 lb-in torque to drive larger dampers and high-pressure flow valves without stalling

Resideo AT140B1016 Transformer 318423-701 Is this part required forThe Resideo AT140B1016 is a heavy duty, foot mounted HVAC control transformer engineered to provide steady low voltage power for demanding residential and light commercial applications. This unit efficiently steps down 120V primary power to a 24V secondary output, making it a critical component for powering thermostats, gas valves, relays, and integrated furnace kernels. Rated at 40 VA, it offers more than enough overhead for modern multi stage