OEM Carrier Transformer 120V–24V 40VA for Model PF4MNA060T00AAAA

This is the factory OEM replacement transformer (part number HT01CN241) for the Carrier PF4MNA060T00AAAA air handler. The transformer steps down 120V line voltage to the 24V AC signal that powers your entire low-voltage control circuit — including the thermostat, control board, contactor coil, and zone valves. When the transformer fails, the result is complete loss of control power: a blank thermostat, an unresponsive system, or a tripped circuit breaker caused by a shorted secondary winding. Replacing it with the correct OEM unit restores the factory-specified voltage and VA capacity, protecting downstream components from under-voltage stress.

• Specs: Input 120V AC | Output 24V AC | 40VA rated | Class 2 control circuit transformer | Direct OEM replacement for part number HT01CN241
• OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances specified by Carrier engineering. Generic units often run under-rated VA, causing premature thermal cutout trips and unreliable thermostat response — especially in multi-zone applications.
• Install Difficulty: 2/5 — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to confirm 24V output after install). Label all low-voltage wires before disconnecting from the old unit.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed as a direct drop-in replacement for the Carrier PF4MNA060T00AAAA air handler. Verify input voltage and VA rating on your unit's data plate before ordering. Our technical team is available to confirm fitment — just reach out before you buy.