{"product_id":"carrier-ph12na018000acaa-transformer-h4oyjb","title":"OEM Carrier Transformer 60VA 115\/208\/230V–24V for PH12NA018000ACAA","description":"\u003ch1\u003eOEM Carrier Transformer 60VA 115\/208\/230V–24V for Model PH12NA018000ACAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement control transformer for the \u003cstrong\u003eCarrier PH12NA018000ACAA\u003c\/strong\u003e packaged heat pump unit. The transformer steps down line-voltage power (115, 208, or 230V primary) to 24V AC to power the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When it fails, the system goes completely unresponsive: no thermostat display response, no contactor pull-in, and no call-for-cooling or heating. A failed transformer is one of the most common reasons an otherwise intact system appears completely dead.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 60VA capacity | Primary voltage: 115 \/ 208 \/ 230V AC | Secondary voltage: 24V AC | Foot-mounted configuration | OEM part number: HT01AW229\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier Factory Authorized Part — wound to exact VA and voltage tolerances for the PH12NA018000ACAA. Off-brand transformers rated loosely at 60VA can sag under full control-circuit load, causing erratic operation, nuisance tripping, or premature contactor coil burnout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (to verify 24V output post-install). Label or photograph all low-voltage wiring before disconnecting. Mount feet to existing bracket and reconnect wires per unit wiring diagram.\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 — order by 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for Carrier model \u003cstrong\u003ePH12NA018000ACAA\u003c\/strong\u003e packaged heat pump units. Always verify your unit's data plate voltage matches the transformer's primary tap before installation. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you order — contact us anytime.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641972576627,"sku":"CARRIE-PH12NA018000ACAA-TRANSFORMER-HT01AW229","price":70.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641972609395,"sku":"CARRIE-PH12NA018000ACAA-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_7be3fcd2-ec8d-42a3-b60e-d09c79bce369.jpg?v=1782943130","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph12na018000acaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}