{"product_id":"carrier-c48a306052-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C48A306052 — Ships Today","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model C48A306052\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier C48A306052\u003c\/strong\u003e packaged unit. The control transformer steps down line voltage (120V) to the 24V signal voltage that powers your thermostat, contactor coil, control board, and all low-voltage safety circuits. When it fails, the entire control circuit goes dead — the thermostat goes blank, the system won't respond to any call for heating or cooling, and nothing downstream receives power. It's one of the first components to check when a unit appears completely unresponsive.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | OEM part number HT01BD236 | Factory-matched impedance and thermal protection for Carrier packaged equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01BD236 transformer meets Carrier's exact VA rating and thermal cutoff specifications. Generic transformers may be undersized or lack proper overcurrent protection, risking repeat failures or damage to downstream control boards.\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 installation before restoring full system power. Always confirm primary voltage matches supply.\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 Fits Carrier model \u003cstrong\u003eC48A306052\u003c\/strong\u003e packaged unit. Verify your existing transformer's VA rating and primary\/secondary voltage on the unit's data plate before ordering. Not sure if this is the right part? Our HVAC parts specialists confirm fitment before you buy — no guesswork, no returns.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909748248947,"sku":"CARRIE-C48A306052-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909748281715,"sku":"CARRIE-C48A306052-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_cdd24283-ebcb-41ac-ab01-e06d95a1a11c.jpg?v=1782939180","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a306052-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}