OEM Carrier Control Transformer 50VA 120/208/240V–12/24V for Model YAC36100YAC308T

This is the genuine OEM Carrier control transformer (part# P201-35150) factory-specified for the Carrier YAC36100YAC308T. The transformer steps down incoming line voltage (120, 208, or 240 VAC) to a safe 12/24 VAC output that powers your system's control board, thermostat, and all low-voltage control circuit components. When this transformer fails — due to a shorted control wire, failed board, or age-related insulation breakdown — the entire low-voltage control circuit goes dead: the thermostat goes blank, the system won't respond to any call for heating or cooling, and no secondary components will energize.

• Specs: 50 VA rating | Primary: 120/208/240 VAC multi-tap | Secondary: 12/24 VAC | 60 Hz | Single-phase | CSA listed | Dimensions approx. 3.8" L × 3.1" W × 2.2" H
• OEM vs Generic: This is a factory-original Carrier/Totaline transformer wound to exact VA and voltage tolerances. Generic substitutes often deviate in VA capacity, causing nuisance fuse-blowing or premature failure under load — particularly problematic in multi-stage systems where control circuit demand is highest.
• Install difficulty: 3/5 — Line-voltage wiring is involved. Tools required: insulated screwdrivers, needle-nose pliers, multimeter (to verify 24VAC output post-install), and wire nuts or spade terminals. Always shut off power at the breaker and verify with a non-contact voltage tester before disconnecting any wiring. Photograph all wire connections before removal.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Factory-matched replacement for Carrier model YAC36100YAC308T. Verify primary voltage tap matches your unit's supply voltage (120V, 208V, or 240V) before wiring. Cross-references: Totaline P201-35150, HCTY156D0LS11102. Not sure it fits? Our team verifies fitment before you order — order with confidence and get back up and running today.