{"product_id":"carrier-ph12na018000adaa-transformer-h4oyjb","title":"OEM Carrier Control Transformer 60VA 115\/208\/230V-24V — PH12NA018000AD","description":"\u003ch1\u003eOEM Carrier Control Transformer 60VA 115\/208\/230V–24V for Model PH12NA018000ADAA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01AW229\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PH12NA018000ADAA\u003c\/strong\u003e. The transformer steps down the line-voltage primary (115V, 208V, or 230V) to a 24V AC secondary signal that powers the low-voltage control circuit — including the thermostat, contactor coil, and control board. When this transformer fails, the entire control circuit goes dead: the thermostat displays nothing, the system won't respond to any command, and you may detect a burnt smell or see a tripped fuse on the board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 60VA rating | 115\/208\/230V primary | 24V secondary | Multi-tap primary for flexible installation | OEM part number HT01AW229 (also cross-references HT01AW229A)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the factory-authorized OEM part, manufactured to exact Carrier specifications. Generic transformers often carry lower VA ratings or looser voltage tolerances, risking nuisance fuse trips and premature failure of downstream control components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Line-voltage wiring is present; always disconnect power at the breaker before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Verify primary tap wiring matches your supply voltage before energizing. Check and replace the 3A or 5A control-circuit fuse if it has blown.\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 Designed for the \u003cstrong\u003eCarrier PH12NA018000ADAA\u003c\/strong\u003e. Cross-references include HT01AW229A, CIN-TRAN, and 30-BV2006. Always verify the VA rating and primary\/secondary voltages on your unit's data plate before ordering. Our parts specialists are available to confirm fitment — contact us before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641971495283,"sku":"CARRIE-PH12NA018000ADAA-TRANSFORMER-HT01AW229","price":162.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641971528051,"sku":"CARRIE-PH12NA018000ADAA-TRANSFORMER-HT01AW229-GEN","price":142.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01AW229_fa619a63-64c0-4d67-a475-8b8273eb9f8e.jpg?v=1775026081","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph12na018000adaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}