{"product_id":"carrier-fa4anc042008agaa-transformer-h3hww2","title":"OEM Carrier Transformer 40VA 120V\/24V for FA4ANC042008AGAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model FA4ANC042008AGAA Air Handler\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part# \u003cstrong\u003eHT01CN236\u003c\/strong\u003e) is the factory-specified 40VA step-down transformer for the \u003cstrong\u003eCarrier FA4ANC042008AGAA\u003c\/strong\u003e fan coil air handler. Its job is to convert 120V line voltage into the 24V AC signal that powers your thermostat, control board, and all low-voltage switching components. When this transformer fails, the entire control circuit goes dark — your thermostat display goes blank, the system won't respond to calls for heating or cooling, and you may find a blown fuse on the control board from a secondary short.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | Hardwired lead connections | Factory-matched impedance and thermal protection for the FA4ANC042008AGAA platform\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01CN236 transformer is wound and rated to exact Carrier factory specifications. Generic transformers often use lower-grade core laminations that run hotter and fail prematurely, risking repeated control board fuse failures and nuisance lockouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off power at the breaker and confirm voltage is zero before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label or photograph existing wire connections before disconnecting. Replace the control board fuse at the same time to clear any secondary short damage.\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 Engineered for the Carrier \u003cstrong\u003eFA4ANC042008AGAA\u003c\/strong\u003e fan coil air handler. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering. If you're unsure of fitment, our parts specialists verify compatibility before you commit to a purchase — same-day shipping on all in-stock orders.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909565272435,"sku":"CARRIE-FA4ANC042008AGAA-TRANSFORMER-HT01CN236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909565305203,"sku":"CARRIE-FA4ANC042008AGAA-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_dc4d53b2-983e-4d73-998c-10958be69cfc.jpg?v=1782940820","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fa4anc042008agaa-transformer-h3hww2","provider":"National HVAC Parts","version":"1.0","type":"link"}