OEM Carrier 60VA Control Transformer HT01AW229 for Model PH13NB01900GAAAA

This OEM control transformer is the factory-specified replacement for the Carrier PH13NB01900GAAAA packaged heat pump unit. The transformer steps down 115/208/230V line voltage to the 24V AC signal that powers the thermostat circuit, control board, and all low-voltage safety controls. When this transformer fails, the entire control system goes dark — the thermostat goes blank, the unit will not respond to any call for heating or cooling, and no safety faults can be communicated. A blown fuse on the secondary side is a common first indicator of transformer failure.

• Specs: 60 VA power rating | 115/208/230V primary input | 24V secondary output | 50/60 Hz | Foot-mounted configuration | OEM part number HT01AW229 / HT01AW229A
• OEM vs Generic: This is a Factory Authorized Part manufactured to Carrier's exact VA rating and insulation class. Generic transformers rated at ±10% VA tolerance can under-power control boards during peak load, causing intermittent lockouts and premature board failure.
• Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdriver, needle-nose pliers, multimeter (to verify 24V output post-install). Always label low-voltage wiring before disconnecting terminals. Verify fuse and fuse holder are intact before condemning the transformer.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PH13NB01900GAAAA packaged heat pump. Also cross-references to Bryant and Payne units using the same 60VA, 115/208/230V-24V transformer specification. Always verify primary voltage and VA rating on your unit's data plate before ordering. Our parts specialists are available to confirm fitment — contact us before you buy.