{"product_id":"carrier-fa4anf018005agaa-transformer-h3hww2","title":"OEM Carrier Transformer 40VA 120V-24V for FA4ANF018005AGAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01CN236 for Model FA4ANF018005AGAA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part number \u003cstrong\u003eHT01CN236\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eFA4ANF018005AGAA\u003c\/strong\u003e air handler unit. The transformer steps down line voltage from 120V to 24V AC to power the low-voltage control circuit — including the thermostat, control board, and all 24V relay coils. When this transformer fails, the entire control circuit goes dead: the thermostat shows no power, the system won't respond to any calls for heating or cooling, and nothing operates. It is often the first component to inspect when a unit appears completely unresponsive despite confirmed line voltage at the unit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input 120V AC | Output 24V AC | 40VA rating | OEM part number HT01CN236 | Factory-matched construction for reliable low-voltage output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier transformer built to exact factory VA and voltage tolerances. Generic transformers may deliver inconsistent output voltage, causing nuisance lockouts, board resets, or premature control board failure — making OEM the smart long-term investment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power to the air handler before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter to confirm 24V output after installation. Label or photograph all low-voltage wiring connections before removing the original transformer.\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 and factory-specified for the Carrier \u003cstrong\u003eFA4ANF018005AGAA\u003c\/strong\u003e air handler. Verify your existing transformer's VA rating and primary\/secondary voltage on the unit data plate before ordering to ensure a correct fit. Our parts specialists are available to confirm compatibility before you buy — same-day shipping means your repair won't wait.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909562454387,"sku":"CARRIE-FA4ANF018005AGAA-TRANSFORMER-HT01CN236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909562487155,"sku":"CARRIE-FA4ANF018005AGAA-TRANSFORMER-HT01CN236-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-HT01CN236_9f0dd4f6-e16e-4474-8fc0-c9834be4bd72.jpg?v=1782939442","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fa4anf018005agaa-transformer-h3hww2","provider":"National HVAC Parts","version":"1.0","type":"link"}