OEM Carrier Control Transformer 40VA 208/230V to 24V for Model PY3GNA060130AA

This OEM control transformer (part #HT01BD209) is the factory-specified replacement for the Carrier PY3GNA060130AA gas furnace. The transformer steps down 208/230V line voltage to a stable 24V signal that powers the control board, thermostat circuit, gas valve coil, and all low-voltage components throughout the system. When the transformer fails, the entire control circuit goes dark — the thermostat won't respond, the system won't call for heat or cooling, and in some cases a tripped internal fuse may be the only visible clue. Replacing it with the correct OEM unit restores full system operation.

• Specs: 208/230V primary | 24V secondary | 40VA rated | 50/60 Hz | Replaces HT01BD207, HT01CN232 — factory-matched output regulation
• OEM vs Generic: OEM transformers maintain tight voltage regulation under load. Off-brand units can sag under peak draw, causing nuisance lockouts, erratic board behavior, or premature contactor coil failure.
• Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after installation). Always note wire colors and terminal positions before disconnecting the old transformer.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for the Carrier PY3GNA060130AA gas furnace. Also replaces obsolete predecessor part numbers HT01BD207 and HT01CN232. Verify your unit's data plate voltage (208/230V primary) before ordering to confirm fitment. Have a question? Our HVAC parts specialists verify fitment before you buy — order with confidence.