OEM Carrier Control Transformer 50VA 120/240-24V for Model YAC36100YAC105A

This factory OEM control transformer (part # P201-35150) is the direct replacement for the Carrier YAC36100YAC105A. The transformer steps down your home's 120/208/240V line voltage to a safe 24V AC signal that powers every low-voltage component in the system — including the control board, thermostat, contactor coil, and zone valves. When this transformer fails, the entire control circuit goes dark: your thermostat shows no power, the system refuses to respond to any call for heating or cooling, or the low-voltage fuse blows repeatedly without a clear cause.

• Specs: 50 VA rating | Primary: 120/208/240 VAC multi-tap | Secondary: 12/24 VAC | Single phase | 60 Hz | CSA listed | OEM part # P201-35150 / Totaline cross-reference
• OEM vs Generic: This is a genuine Carrier/Totaline factory-authorized part, wound to exact VA and voltage tolerances. Off-brand transformers often run under-rated VA, causing premature thermal cutout and repeated low-voltage fuse failures.
• Install difficulty: 3/5 — Line voltage (120–240V) is present at the primary terminals. Always shut off power at the breaker and confirm with a meter before handling. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph all wiring before disconnecting leads.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Confirmed fit for Carrier model YAC36100YAC105A. Verify your unit's data plate shows a 50VA, 120/208/240V primary and 24V secondary requirement before ordering. Have a question about fitment? Our HVAC parts specialists verify compatibility before every order — call or chat us today and we'll get you the right part fast.