OEM Carrier 40VA Control Transformer HT01BD209 for Model PY2PNB060115NB

This is the genuine OEM replacement control transformer (part number HT01BD209) factory-specified for the Carrier PY2PNB060115NB gas furnace. The transformer steps down line voltage (120V) to the 24V AC signal that powers your thermostat, control board, gas valve, and all low-voltage safety circuits. When this component fails, the entire control circuit loses power — the result is a completely unresponsive system: the thermostat goes dark, the furnace will not fire, and no fault codes will appear because the board itself has no power to generate them.

• Specs: 40VA rating | 120V primary / 24V secondary | Class 2 control circuit transformer | Direct OEM factory replacement for part number HT01BD209
• OEM vs Generic: Carrier OEM transformers are wound and tested to exact VA and voltage tolerances. Undersized or off-tolerance aftermarket units can starve the control board of current under load, causing intermittent lockouts or premature board failure.
• Install difficulty: 2/5 — Always shut off power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 24V output after install). Photograph all wiring connections before disconnecting the old unit.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct drop-in for the Carrier PY2PNB060115NB packaged gas/electric unit. Always verify your unit's data plate voltage and VA requirements before ordering. Our fitment team is available to confirm compatibility before you buy — no guesswork, no returns.