OEM Carrier Transformer 208/230V to 24V 40VA for Model PF4MNA049T00ABAA

This is the genuine OEM Carrier transformer (part #HT01CN241) factory-specified for the Carrier PF4MNA049T00ABAA air handler. The transformer steps down line voltage from 208/230V on the primary side to a safe 24V AC on the secondary side, powering the low-voltage control circuit that operates your thermostat, control board, relays, and zone valves. When this part fails, the entire control circuit goes dark — symptoms include a completely unresponsive thermostat, no heating or cooling response, and a system that appears totally dead despite line power being present.

• Specs: 208/230V Primary | 24V Secondary | 40VA Rating | Direct OEM drop-in replacement for Carrier part #HT01CN241
• OEM vs Generic: Genuine Carrier OEM transformers are wound to exact VA and voltage tolerances required by the PF4MNA049T00ABAA control circuit. Undersized or off-tolerance generic transformers can sag under load, causing intermittent lockouts, nuisance tripping, or premature control board failure.
• Install Difficulty: 2/5 — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all wire connections before removal. Verify 24V output with a multimeter after installation before restoring full system power.
• Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day from our warehouse when ordered by 5 PM local time.

Compatibility: Designed as a direct OEM replacement for the Carrier PF4MNA049T00ABAA air handler. Always verify the part number on your existing transformer's label and confirm 208/230V primary and 24V 40VA secondary ratings match your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions.