{"product_id":"carrier-c48a402562-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C48A402562 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V to 24V for Model C48A402562\u003c\/h1\u003e\u003cp\u003eThis OEM control circuit transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier C48A402562\u003c\/strong\u003e packaged unit. The transformer steps down line voltage (120V) to the 24V signal required by your thermostat, control board, contactor coil, and all low-voltage safety circuits. When this component fails, the entire control system goes dark — the thermostat becomes unresponsive, the unit will not call for heating or cooling, and no safety circuits can operate. OEM part numbers \u003cstrong\u003eHT01BD236\u003c\/strong\u003e and \u003cstrong\u003eHT01BD702\u003c\/strong\u003e are direct factory replacements for this application.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | Compact enclosure | Factory-matched output tolerance for stable low-voltage control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances specified by Carrier engineering. Undersized or off-tolerance generic units can cause nuisance lockouts, erratic thermostat behavior, and premature contactor coil failure due to voltage sag under load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage with a multimeter before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Label all low-voltage wiring before disconnecting the old unit.\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 Carrier \u003cstrong\u003eC48A402562\u003c\/strong\u003e packaged unit using OEM part numbers HT01BD236 or HT01BD702. Always confirm your unit's control voltage and VA rating on the data plate or wiring diagram before ordering. Our HVAC parts specialists are available to verify fitment — order with confidence and receive fast same-day shipping.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909744710003,"sku":"CARRIE-C48A402562-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909744742771,"sku":"CARRIE-C48A402562-TRANSFORMER-HT01BD236-GEN","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-HT01BD236_baff80ed-f02d-4f95-a8ab-51707d5083ee.jpg?v=1782939202","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a402562-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}