{"product_id":"carrier-ph12na03000gabaa-transformer-h4oyjb","title":"OEM Carrier Control Transformer 60VA 115\/208\/230V–24V — PH12NA03000GAB","description":"\u003ch1\u003eOEM Carrier Control Transformer 60VA 115\/208\/230V–24V for Model PH12NA03000GABAA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01AW229\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PH12NA03000GABAA\u003c\/strong\u003e. The transformer steps down line voltage (115, 208, or 230 VAC primary) to the 24 VAC secondary signal that powers the entire low-voltage control circuit — including the thermostat, contactor coil, safety switches, and control board. When this transformer fails, the result is typically a completely unresponsive system: no thermostat display, no contactor pull-in, and no operation whatsoever. A failed transformer is often misdiagnosed as a control board failure, making it a critical first check.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 60 VA power rating | 115\/208\/230 VAC primary voltage | 24 VAC secondary output | 50\/60 Hz | Foot-mounted configuration | Factory OEM part number HT01AW229\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier Factory Authorized Part — not an aftermarket substitute. OEM transformers are wound to exact VA and voltage specifications, ensuring proper inrush current handling and long-term reliability. Generic alternatives may under-deliver VA capacity, causing nuisance tripping or premature burnout.\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 servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, wire nuts. Label all low-voltage wires before disconnecting. Verify primary voltage tap matches your line voltage before energizing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003ePH12NA03000GABAA\u003c\/strong\u003e. Also cross-references to Bryant and Payne systems using the same 60VA 115\/208\/230V–24V control transformer specification. Always verify your unit's data plate voltage and VA rating before ordering. Our parts specialists are available to confirm fitment — contact us before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641959633267,"sku":"CARRIE-PH12NA03000GABAA-TRANSFORMER-HT01AW229","price":168.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641959666035,"sku":"CARRIE-PH12NA03000GABAA-TRANSFORMER-HT01AW229-GEN","price":148.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01AW229_9d5e76ae-0467-46a2-9a60-1d77e8b719e6.jpg?v=1775026213","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph12na03000gabaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}