OEM Carrier Control Transformer 208/230V–24V 40VA for Model PF1MNC043000AAAA

This is the genuine OEM replacement control transformer for the Carrier PF1MNC043000AAAA air handler, part number HT01CN241. The transformer is the heartbeat of your system's 24V control circuit — it steps down the 208/230V line voltage to the 24V signal voltage required by your thermostat, control board, gas valve, and all low-voltage components. When the transformer fails, nothing in the system responds: the thermostat goes blank, the blower won't start, and no call for heat or cooling is answered. A failed transformer is often the first suspect when a system is completely unresponsive despite having line power.

• Specs: 208/230V Primary | 24V Secondary | 40VA rated | Direct OEM factory replacement for Carrier HT01CN241
• OEM vs Generic: This factory-authorized part is built to exact Carrier specifications for seamless integration and full system compatibility. Generic transformers may carry lower VA ratings or looser voltage tolerances, risking nuisance tripping or premature control board failure.
• Install Difficulty: 2/5 — Shut off all power at the breaker and disconnect the line-voltage wiring before touching any terminals. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Always label or photograph wiring before removal.
• Warranty: 1-year OEM manufacturer's warranty. In stock and ships the same business day from our warehouse.

Compatibility: Designed for the Carrier PF1MNC043000AAAA air handler. Verify your unit's data plate shows a 208/230V primary and 24V secondary control circuit before ordering. Our fitment team is available to confirm compatibility — contact us before you order if you have any questions.