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This is the genuine OEM replacement transformer (part number HT01BC701) factory-specified for the Carrier PY3GEAA36090NA packaged rooftop unit. The transformer steps high-voltage 460V primary power down to a 230V secondary output at a robust 1564VA rating, providing stable power to the unit's internal components and control circuits. When this transformer fails, the result is typically a complete system shutdown — no heating, no cooling, no fan — because downstream components lose the voltage they require to operate.
Compatibility: Designed for the Carrier PY3GEAA36090NA packaged rooftop unit. Also compatible with select Carrier, Bryant, and Payne packaged units and RTUs requiring a 460V primary / 230V secondary / 1564VA transformer. Always verify voltage and VA rating on your unit's data plate before ordering. Our team is available to confirm fitment — contact us before you order.