OEM Carrier 40VA Control Transformer HT01CN241 for Model PF4MNA036L00AAAA

This is the genuine OEM Carrier control transformer (part# HT01CN241) factory-specified for the Carrier PF4MNA036L00AAAA air handler. The transformer steps down 208/230V line voltage to 24V AC to power the entire low-voltage control circuit — including the thermostat, contactor coils, and control board. When this transformer fails, the result is total system unresponsiveness: the thermostat goes blank, the system refuses to start, and no 24V signal reaches any downstream component. It is often the first part to test when nothing in the system responds at all.

• Specs: 40VA capacity | 208/230V primary input | 24V AC secondary output | Direct OEM drop-in replacement for Carrier part# HT01CN241
• OEM vs Generic: This genuine Carrier OEM transformer is built to exact factory specifications, ensuring precise voltage output and VA capacity. Generic transformers frequently fall short on VA rating or voltage regulation, leading to nuisance lockouts, control board resets, and premature component failure.
• Install Difficulty: 2/5 — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or push-in connectors. Photograph or label all wiring before disconnecting. Verify 24V output with a multimeter after installation before restoring full system power.
• Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse when ordered by 5 PM local time.

Compatibility: Engineered as a direct OEM replacement for the Carrier PF4MNA036L00AAAA air handler. Always confirm your existing transformer's primary voltage, secondary voltage, and VA rating against your unit's data plate before ordering. Our fitment team is available to verify compatibility before you buy — just reach out before placing your order.