{"product_id":"carrier-fa4anf030000agaa-transformer-h3hww2","title":"OEM Carrier Transformer 40VA 120V-24V for FA4ANF030000AGAA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA for Model FA4ANF030000AGAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part# \u003cstrong\u003eHT01CN236\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier FA4ANF030000AGAA\u003c\/strong\u003e air handler. The transformer steps down 120V line voltage to 24V AC to power the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this transformer fails, the result is total system silence: the thermostat goes blank, nothing responds, and no error codes appear because the control circuit has lost power entirely.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01CN236 | Factory-matched to Carrier FA4ANF030000AGAA air handler specifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01CN236 transformer is wound and rated to Carrier's exact VA and voltage tolerances. Undersized or off-spec generic transformers can overheat, trip their internal thermal fuse prematurely, or deliver unstable 24V output that causes erratic board behavior and nuisance lockouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, needle-nose pliers, multimeter (to confirm 24V output after install). Photograph all low-voltage wiring connections before removing 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 — get your system back online fast.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eFA4ANF030000AGAA\u003c\/strong\u003e air handler. Always verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering. Our parts specialists are available to confirm fitment prior to purchase — order with confidence.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909558718835,"sku":"CARRIE-FA4ANF030000AGAA-TRANSFORMER-HT01CN236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909558751603,"sku":"CARRIE-FA4ANF030000AGAA-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_7678d895-6513-47f4-9504-a8ce0570b5d7.jpg?v=1782939454","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fa4anf030000agaa-transformer-h3hww2","provider":"National HVAC Parts","version":"1.0","type":"link"}