{"product_id":"carrier-c48a203562-transformer-h302a1","title":"OEM Carrier 40VA 120V to 24V Control Transformer for C48A203562 — Ships Today","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C48A203562\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier C48A203562\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to the 24V signal used by your thermostat, contactor coil, and all low-voltage control circuits. When it fails, the entire control circuit goes dark — nothing responds at the thermostat, no contactor energizes, and the system will not start regardless of demand. A failed transformer is one of the most overlooked causes of a completely unresponsive HVAC system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input 120V primary | 24V secondary output | 40VA rated | OEM Part Numbers: \u003cstrong\u003eHT01BD236\u003c\/strong\u003e \/ \u003cstrong\u003eHT01BD702\u003c\/strong\u003e | Factory-matched electrical specifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances for the Carrier C48A203562 control board. Undersized or off-tolerance aftermarket units can overheat, blow the control fuse repeatedly, or deliver unstable 24V output that causes nuisance lockouts.\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, multimeter, wire nuts or spade connectors. Label all wires before disconnecting the old transformer. Verify 24V output with a multimeter before reassembling the panel.\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 C48A203562\u003c\/strong\u003e packaged unit. Before ordering, verify your existing transformer's primary voltage, secondary voltage, and VA rating on the unit data plate or original transformer label. Cross-reference OEM part numbers HT01BD236 and HT01BD702 to confirm fitment. Our parts specialists are available to verify compatibility before you order — reach out before purchasing if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909759455603,"sku":"CARRIE-C48A203562-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909759488371,"sku":"CARRIE-C48A203562-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_e59b8749-2c1f-40ac-90fb-f1c4c4444a5c.jpg?v=1782899283","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a203562-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}