{"product_id":"carrier-fa4bnf060010aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 120V-24V for FA4BNF060010AAAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model FA4BNF060010AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier FA4BNF060010AAAA\u003c\/strong\u003e air handler. The transformer is the backbone of your system's low-voltage control circuit, stepping down 120V line voltage to the 24V signal voltage required by your thermostat, contactor coil, and control board. When the transformer fails, the entire control circuit goes dead — your thermostat will display a blank screen or show no response, and the system will not heat, cool, or circulate air at all.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary voltage: 120V | Secondary voltage: 24V | OEM part number HT01CN241 | Factory-matched output tolerance for reliable control circuit protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM transformer, wound and tested to exact factory specifications. Generic transformers frequently lack proper VA headroom, causing nuisance trips and premature failure — especially when multiple 24V accessories such as zone boards or humidifiers share the circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the air handler before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all low-voltage wires before disconnecting. Verify 24V output with a multimeter after installation before restoring thermostat connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before cutoff ship the same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Carrier \u003cstrong\u003eFA4BNF060010AAAA\u003c\/strong\u003e fan coil air handler. Confirm your existing transformer's VA rating and primary\/secondary voltages on the unit's data plate before ordering. Our parts specialists are available to verify fitment — order with confidence and get your system back online today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909552755059,"sku":"CARRIE-FA4BNF060010AAAA-TRANSFORMER-HT01CN241","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909552787827,"sku":"CARRIE-FA4BNF060010AAAA-TRANSFORMER-HT01CN241-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-HT01CN241_a3f06e99-dd05-4982-bccd-ae1fd5b283f2.jpg?v=1782939469","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fa4bnf060010aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}