{"product_id":"carrier-ph13nb01800gaaaa-transformer-h4oyjb","title":"OEM Carrier Transformer 60VA 115\/208\/230V–24V for PH13NB01800GAAAA","description":"\u003ch1\u003eOEM Carrier Foot-Mounted Transformer 60VA 115\/208\/230V–24V for Model PH13NB01800GAAAA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part number \u003cstrong\u003eHT01AW229\u003c\/strong\u003e) is the factory-authorized replacement for the \u003cstrong\u003eCarrier PH13NB01800GAAAA\u003c\/strong\u003e packaged heat pump unit. The control transformer steps down the high-voltage line power (115, 208, or 230V primary) to a safe 24V AC secondary signal that powers your thermostat, contactor coil, and all low-voltage control circuitry. When it fails, the entire control circuit goes dead — the thermostat displays nothing, the contactor won't energize, and no heating or cooling is possible. Replacing a failed transformer is one of the most impactful single-component repairs you can make to restore full system operation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 60VA rating | Multi-tap primary: 115V \/ 208V \/ 230V | 24V AC secondary | Foot-mounted design | Factory-matched OEM tolerances\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01AW229 is manufactured to Carrier's exact VA rating and insulation class. Generic transformers rated at nominal 60VA often run hot under full control-circuit load, shortening service life and risking nuisance fuse failures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power to the unit before beginning. Tools needed: multimeter (verify 24V output after install), flathead and Phillips screwdrivers, needle-nose pliers, wire nuts. Always photograph or label existing wiring before disconnecting primary and secondary leads. Confirm correct primary tap (115V, 208V, or 230V) matches your supply 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 Fits Carrier model \u003cstrong\u003ePH13NB01800GAAAA\u003c\/strong\u003e packaged heat pump units. Verify supply voltage matches your selected primary tap (115V, 208V, or 230V) before installation. Cross-references: HT01AW229A. Questions about fitment? Our HVAC parts specialists confirm compatibility before you order — contact us today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641928765811,"sku":"CARRIE-PH13NB01800GAAAA-TRANSFORMER-HT01AW229","price":70.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641928798579,"sku":"CARRIE-PH13NB01800GAAAA-TRANSFORMER-HT01AW229-GEN","price":23.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-HT01AW229_4e33ba43-e123-4c54-bccf-2faf16aa5d92.jpg?v=1782943141","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph13nb01800gaaaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}