{"product_id":"carrier-ph13nr042000acaa-transformer-h4oyjb","title":"OEM Carrier Control Transformer 60VA 115\/208\/230V–24V — PH13NR042000AC","description":"\u003ch1\u003eOEM Carrier Control Transformer 60VA 115\/208\/230V–24V for Model PH13NR042000ACAA\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-authorized replacement control transformer for the \u003cstrong\u003eCarrier PH13NR042000ACAA\u003c\/strong\u003e heat pump system. The control transformer steps down high-voltage line power (115\/208\/230V) to the 24VAC signal voltage that powers your thermostat, contactor coil, and all control board logic. When this transformer fails, the entire low-voltage control circuit goes dead — nothing responds, the thermostat goes blank, and the system will not start in any mode. A failed transformer is often mistaken for a bad control board, making correct diagnosis critical before replacing more expensive components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 60 VA power rating | 115\/208\/230 VAC primary | 24 VAC secondary | 50\/60 Hz | Foot-mount configuration | OEM part number HT01AW229\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a Factory Authorized Parts (FAP) OEM unit built to exact Carrier tolerances. Generic transformers often use lower-grade core laminations that run hot under load, shortening service life and risking nuisance trips on sensitive control boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter (to verify 24VAC output after install), wire stripper\/connectors. Always check for a shorted downstream device (contactor coil, zone valve) before powering up — a short is the #1 cause of transformer failure and will blow the replacement immediately if not resolved.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty on parts. Ships same business day from our warehouse when ordered before 3PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as the factory-specified transformer for \u003cstrong\u003eCarrier model PH13NR042000ACAA\u003c\/strong\u003e. Also fits Bryant and Payne models sharing the same 60VA 115\/208\/230V–24V transformer specification — verify your unit's data plate voltage requirements before ordering. Not sure if this is the right part? Contact our HVAC parts specialists for free fitment verification before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641866178931,"sku":"CARRIE-PH13NR042000ACAA-TRANSFORMER-HT01AW229","price":162.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641866211699,"sku":"CARRIE-PH13NR042000ACAA-TRANSFORMER-HT01AW229-GEN","price":142.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01AW229_9858e2c3-4b28-458f-9eec-eeb5772a4ef6.jpg?v=1775026218","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph13nr042000acaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}