OEM Carrier 50VA Control Transformer P201-35150 for Model YAC36100YAC407AC

This is the genuine OEM Carrier control transformer (part number P201-35150), factory-specified for the Carrier YAC36100YAC407AC HVAC system. The transformer steps down high-voltage line power — 120, 208, or 240 VAC — to a safe 12/24VAC output used by the system's control board, thermostat, and all low-voltage circuits. When this transformer fails, the entire control circuit goes dark: the thermostat becomes unresponsive, the system won't start, and no fault codes can even be generated. Replacing it with a factory-matched OEM unit restores precise voltage regulation and protects every downstream control component.

• Specs: 50VA rating | Primary: 120/208/240 VAC | Secondary: 12/24 VAC | 60 Hz | Single-phase | CSA listed | Dimensions: 3.8"L × 3.1"W × 2.2"H
• OEM vs Generic: This OEM Carrier transformer is wound to exact factory VA and voltage tolerances. Generic transformers often run at reduced VA capacity under load, causing voltage sag that damages control boards and thermostats — a far more expensive repair.
• Install difficulty: 3/5 — Line voltage (120–240V) is present at the primary terminals. Shut off power at the breaker and verify with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, wire strippers, multimeter, needle-nose pliers. Photograph all wiring connections before removal.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our climate-controlled warehouse.

Compatibility: Confirmed fit for Carrier model YAC36100YAC407AC. Also cross-references Totaline P201-35150 and OEM part HCTY156D0LS11102. Always verify your existing transformer's VA rating, primary voltage, and secondary voltage against your unit's data plate before ordering. Our team is available to confirm fitment before you buy — order with confidence.