{"product_id":"carrier-ph12na036000abaa-transformer-h4oyjb","title":"OEM Carrier Transformer 60VA 115\/208\/230V→24V for PH12NA036000ABAA","description":"\u003ch1\u003eOEM Carrier Control Transformer 60VA 115\/208\/230V Primary 24V Secondary — Model PH12NA036000ABAA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM foot-mounted control transformer for the \u003cstrong\u003eCarrier PH12NA036000ABAA\u003c\/strong\u003e packaged heat pump unit, carrying OEM part number \u003cstrong\u003eHT01AW229\u003c\/strong\u003e. The control transformer is the backbone of your HVAC unit's low-voltage circuit — it steps down line voltage (115, 208, or 230V) to the 24V AC signal that powers your thermostat, contactor coil, control board, and all safety circuits. When this transformer fails, the entire control system goes dark: your thermostat will display nothing, the unit won't respond to calls for heating or cooling, and no contactors or relays will energize. A failed transformer is often misdiagnosed as a bad control board, making correct part identification critical.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 60 VA rating | Primary voltage: 115 \/ 208 \/ 230 VAC | Secondary voltage: 24 VAC | Foot-mounted configuration | OEM part number HT01AW229 \/ HT01AW229A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier Factory Authorized Part — not an aftermarket substitute. OEM transformers are wound to exact VA and impedance specs, preventing nuisance fuse-blowing and protecting downstream control boards from voltage fluctuation. Generic 60VA transformers frequently run outside rated tolerance, shortening board and contactor life.\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 beginning. Tools needed: flathead and Phillips screwdrivers, wire strippers, needle-nose pliers, multimeter (to confirm 0V before touching terminals). Label all wire connections before removal. The foot-mount bracket makes panel installation straightforward.\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 climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for Carrier model \u003cstrong\u003ePH12NA036000ABAA\u003c\/strong\u003e packaged heat pump units. Also cross-references as HT01AW229A. Always verify your unit's data plate voltage matches the primary voltage taps before installing. Questions about fitment? Our HVAC parts specialists confirm compatibility before you order — no guesswork.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641957339507,"sku":"CARRIE-PH12NA036000ABAA-TRANSFORMER-HT01AW229","price":70.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641957372275,"sku":"CARRIE-PH12NA036000ABAA-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_d7dc96e6-24dc-4a68-958d-e5b998f5ed5f.jpg?v=1782943155","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph12na036000abaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}