{"product_id":"carrier-hp13nr04200gakaa-transformer-h4oyjb","title":"OEM Carrier Transformer 40VA 120V-24V for HP13NR04200GAKAA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model HP13NR04200GAKAA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01AW229\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier HP13NR04200GAKAA\u003c\/strong\u003e heat pump system. The transformer steps line voltage down from 120V AC 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 dark: the thermostat becomes unresponsive, the system won't energize, and no error codes will display because the board itself has no power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01AW229 | Factory-matched for Carrier HP13NR04200GAKAA heat pump systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage specifications, ensuring stable 24V output under full control circuit load. Undersized or off-spec generic units can sag under load, causing intermittent lockouts, nuisance trips, or premature contactor coil failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to confirm 24V output after install). Label all low-voltage wires before disconnecting, and verify primary\/secondary terminal orientation before energizing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Carrier \u003cstrong\u003eHP13NR04200GAKAA\u003c\/strong\u003e heat pump. Always confirm the VA rating and primary\/secondary voltages on the existing transformer's label before ordering. If you're unsure of fitment, our HVAC parts specialists can verify compatibility before you purchase — same-day shipping available on all in-stock OEM parts.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909320331635,"sku":"CARRIE-HP13NR04200GAKAA-TRANSFORMER-HT01AW229","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909320364403,"sku":"CARRIE-HP13NR04200GAKAA-TRANSFORMER-HT01AW229-GEN","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-HT01AW229_4f8b3623-aae8-4c2d-a65c-910107afe011.jpg?v=1782939932","url":"https:\/\/nationalhvacparts.com\/products\/carrier-hp13nr04200gakaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}