{"product_id":"carrier-ph10ja030000aeaa-transformer-h4oyjb","title":"OEM Carrier 40VA Transformer 120V–24V for PH10JA030000AEAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 120V–24V for Model PH10JA030000AEAA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part #HT01AW229) is the factory-specified replacement for the \u003cstrong\u003eCarrier PH10JA030000AEAA\u003c\/strong\u003e packaged heat pump unit. The transformer steps down line voltage from 120V to 24V AC to power the low-voltage control circuit — including the thermostat, contactor coil, and control board. When this component fails, the entire control circuit goes dead: your thermostat loses power, the system will not respond to any call for heating or cooling, and no fault codes will display.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 120V primary | 24V secondary | 40VA rated | OEM part #HT01AW229 | Factory-matched for Carrier PH10JA030000AEAA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact factory VA and voltage tolerances, ensuring stable 24V output under full control-circuit load. Generic units may under-deliver under load, causing nuisance lockouts and premature contactor coil failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or terminal connectors. Always label wires before disconnecting the old transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for Carrier model \u003cstrong\u003ePH10JA030000AEAA\u003c\/strong\u003e packaged heat pump units. Verify primary voltage (120V) and VA rating on your unit's data plate before ordering. Our technical team is available to confirm fitment — contact us before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62642013372787,"sku":"CARRIE-PH10JA030000AEAA-TRANSFORMER-HT01AW229","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642013405555,"sku":"CARRIE-PH10JA030000AEAA-TRANSFORMER-HT01AW229-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01AW229_57c7a6a4-fdd4-49a2-adac-f7c50dd66d7e.jpg?v=1775016359","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph10ja030000aeaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}