{"product_id":"carrier-ph13nr036000acaa-transformer-h4oyjb","title":"OEM Carrier 40VA Transformer HT01AW229 for PH13NR036000ACAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01AW229 for Model PH13NR036000ACAA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier PH13NR036000ACAA\u003c\/strong\u003e heat pump system. The transformer steps down 120V line voltage to 24V AC, powering the low-voltage control circuit that drives the thermostat, contactor coil, and all safety controls. When this component fails, the entire control circuit goes dead — symptoms include a blank thermostat display, no response to thermostat calls, or repeated blown low-voltage fuses (typically 3A or 5A) on the control board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | OEM part number HT01AW229 | Factory-matched output for Carrier low-voltage control circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier transformer engineered to exact VA and voltage tolerances. Generic units often run under-rated VA loads, causing overheating, premature failure, and nuisance fuse blowing under peak demand from multiple control accessories.\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, wire stripper, multimeter (verify 24V output after install). Photograph all wiring connections before removal. Always check for a shorted low-voltage circuit if the original transformer failed suddenly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for \u003cstrong\u003eCarrier model PH13NR036000ACAA\u003c\/strong\u003e heat pump systems. Verify your unit's control circuit voltage (24V) and VA demand on the equipment data plate before ordering. If your low-voltage fuse blew alongside this part, inspect the thermostat wiring for shorts before installing the new transformer. Have questions about fitment? Our HVAC parts specialists verify compatibility before you order — \u003cstrong\u003ein stock and ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641872765299,"sku":"CARRIE-PH13NR036000ACAA-TRANSFORMER-HT01AW229","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641872798067,"sku":"CARRIE-PH13NR036000ACAA-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_56dc22c9-c5ec-4cbc-b26e-5606bec74405.jpg?v=1775016523","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph13nr036000acaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}