OEM Carrier 50VA Control Transformer 120/240V–24V for Model YAC36100YAC304

This OEM Carrier control transformer (part number P201-35150) is the factory-specified replacement for the Carrier YAC36100YAC304 unit. The transformer is the heartbeat of your system's low-voltage control circuit — it steps down incoming line voltage (120/208/240 VAC) to the safe 12/24 VAC level required by the control board, thermostat, and all low-voltage accessories. When this transformer fails, the entire control circuit goes dark: the thermostat becomes unresponsive, the system won't call for heating or cooling, and nothing works — even though the unit may have full line voltage present.

• Specs: 50VA rating | Primary voltage: 120/208/240 VAC | Secondary voltage: 12/24 VAC | 60 Hz single-phase | Factory-matched to Carrier YAC36100YAC304 specifications
• OEM vs Generic: This is the genuine OEM Carrier part sourced through authorized channels. Generic transformers frequently deviate in VA rating, secondary voltage tolerance, and thermal protection design — risking nuisance trips or board damage on sensitive Carrier control boards.
• Install difficulty: 2/5 — Always shut off all power (both line voltage and control voltage) before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all low-voltage wires before disconnecting. Verify secondary voltage output with a multimeter before reassembling the panel.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed as the direct OEM replacement transformer for the Carrier YAC36100YAC304. Confirm your unit's data plate shows a 50VA transformer with 120/208/240V primary and 12/24V secondary before ordering. Our parts specialists are available to verify fitment — reach out before you buy for peace of mind. Order today and your part ships same business day.