OEM Carrier 40VA Control Transformer for Model FA4ANC060010AGAA

This OEM Carrier transformer (part number HT01CN236) is the factory-specified replacement for the FA4ANC060010AGAA air handler. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, control board, and low-voltage control circuit. When the transformer fails, the entire control circuit goes dead — your thermostat shows no response, the system won't call for heating or cooling, and nothing operates despite power being present at the unit.

• Specs: Input: 120V AC | Output: 24V AC | Rating: 40VA | OEM Part Number: HT01CN236 | Direct factory replacement with matched impedance and thermal protection
• OEM vs Generic: This OEM transformer is wound to Carrier's exact VA rating and insulation class. Generic substitutes frequently underperform under sustained load, causing nuisance trips or premature burnout — especially in systems with multiple low-voltage accessories like humidifiers or zoning boards.
• Install Difficulty: 2/5 — Disconnect all power before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter to verify 24V output after installation. Label and photograph all low-voltage wiring before disconnecting from the old transformer.
• Warranty: 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier FA4ANC060010AGAA 5-ton air handler. Before ordering, confirm your existing transformer's input voltage, output voltage, and VA rating on the data plate inside your air handler cabinet. If your thermostat is unresponsive with line voltage confirmed at the unit, this transformer is the most common cause. Order with confidence — our team is available to verify fitment before you buy.