OEM Carrier 40VA Control Transformer for Model PF1MNC036010AAAA

This is the factory OEM replacement transformer (part number HT01CN241) for the Carrier PF1MNC036010AAAA air handler. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, control board, and all low-voltage switching components. When this part fails, the entire control circuit goes dead — your thermostat will show no power, the system won't respond to any call for heating or cooling, and you may blow a control-circuit fuse repeatedly. Replacing the transformer is one of the most cost-effective repairs in HVAC service.

• Specs: 120V primary → 24V secondary | 40VA rating | Factory-matched terminals | OEM part number HT01CN241
• OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances specified by Carrier engineering. Undersized or off-tolerance generic transformers can overheat, trip their internal thermal fuse, and damage downstream control boards — costing far more than the part itself.
• Install difficulty: 2/5 — Shut off all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or quick-connect terminals. Always label low-voltage wires before disconnecting. Verify primary and secondary voltages with a multimeter after installation before restoring full power.
• Warranty: 1-year OEM factory warranty against defects. Orders placed before 3 PM ship the same business day from our stocked warehouse.

Compatibility: Engineered specifically for the Carrier PF1MNC036010AAAA air handler. Always verify primary voltage, secondary voltage (24V), and VA rating on your unit's data plate before ordering to ensure a correct fit. Have a question about fitment? Our HVAC parts specialists verify compatibility before you buy — reach out before placing your order.