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This is the genuine OEM replacement control circuit transformer for the Carrier UPFLOW180UAHAC14A upflow air handler. The transformer steps down the incoming line voltage — 120, 208, or 240 VAC — to a safe 24VAC output that powers your system's control board, thermostat, and all low-voltage control circuits. When this transformer fails, the entire control circuit goes dark: the thermostat goes blank, the system locks out, and no heating or cooling function responds. Replacing it with the correct OEM unit restores full control circuit integrity immediately.
Compatibility: Engineered as a direct OEM replacement for the Carrier UPFLOW180UAHAC14A upflow air handler. Verify your unit's supply voltage (120V, 208V, or 240V) to confirm correct primary tap selection before installation. Questions about fitment? Our HVAC parts specialists verify compatibility before you order — ships same day.