{"product_id":"carrier-ph13nr04800gahaa-transformer-h4oyjb","title":"OEM Carrier Transformer 60VA 115\/208\/230V for PH13NR04800GAHAA","description":"\u003ch1\u003eOEM Carrier Control Transformer 60VA 115\/208\/230V for Model PH13NR04800GAHAA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM factory-authorized replacement control transformer for the \u003cstrong\u003eCarrier PH13NR04800GAHAA\u003c\/strong\u003e heat pump package unit. Part number \u003cstrong\u003eHT01AW229\u003c\/strong\u003e, this foot-mounted transformer steps down the 115\/208\/230V line voltage to a 24V secondary signal that powers the entire control circuit — including the thermostat, contactor coil, and all safety switching logic. When this transformer fails, the result is total control circuit loss: the thermostat goes blank, the unit won't respond to any call for heating or cooling, and a multimeter will read 0V at the secondary terminals. It is one of the first components to check whenever a unit presents with a completely dead control board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 60 VA rating | Primary: 115\/208\/230V multi-tap | Secondary: 24V AC | Foot-mounted configuration | OEM Part #HT01AW229 (also supersedes HT01AW229A)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier Factory Authorized Part — not a third-party substitute. OEM transformers are wound to exact VA and voltage tolerances, preventing under-voltage faults that can cause nuisance lockouts or premature control board failure on sensitive modern boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, wire nuts or terminal connectors, and a multimeter to verify 24V output after installation. Always note existing wire colors and tap positions before disconnecting leads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Backed by Carrier's OEM factory warranty. Ships same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Confirmed fit for Carrier model \u003cstrong\u003ePH13NR04800GAHAA\u003c\/strong\u003e. The multi-tap primary (115\/208\/230V) makes this transformer suitable across varying supply voltage configurations. Always verify your unit's data plate voltage before selecting the correct primary tap during installation. Have a question about fitment? Our HVAC parts specialists verify compatibility before every order — contact us today and get this part shipped to your door.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641856315763,"sku":"CARRIE-PH13NR04800GAHAA-TRANSFORMER-HT01AW229","price":70.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641856348531,"sku":"CARRIE-PH13NR04800GAHAA-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_8cb86eb2-8c55-4466-81c4-d1af1748ac11.jpg?v=1782943098","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph13nr04800gahaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}