{"product_id":"carrier-fiop060f311ga-transformer-h30291","title":"OEM Carrier Transformer 40VA 120\/24V for FIOP060F311GA — HT01BD209","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V to 24V for Model FIOP060F311GA — HT01BD209\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eFIOP060F311GA\u003c\/strong\u003e unit. The transformer is the backbone of your HVAC system's control circuit — it steps down 120V line voltage to the 24V signal voltage that powers the thermostat, control board relays, and all low-voltage switching functions. When this component fails, the entire control circuit goes dark: your thermostat loses power, the system stops responding to calls for heating or cooling, and no fault codes will display because the board itself has no power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V AC | Secondary: 24V AC | Factory-matched OEM tolerances | Compact footprint for direct drop-in replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01BD209 transformer is wound and tested to Carrier's exact VA and voltage specifications. Generic transformers may be under-rated, causing overheating or nuisance tripping on the internal fuse — a common callback issue for technicians who cut corners on this part.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter to verify 24V output after installation. Always label or photograph existing wiring before disconnecting. Note the primary and secondary winding terminals carefully.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Ships same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eFIOP060F311GA\u003c\/strong\u003e unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate or wiring diagram before ordering to confirm fitment. Our parts specialists are available to verify compatibility before you purchase — don't guess on a control circuit component.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909510320499,"sku":"CARRIE-FIOP060F311GA-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909510353267,"sku":"CARRIE-FIOP060F311GA-TRANSFORMER-HT01BD209-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-HT01BD209_d54963b3-1a0f-4149-88cb-1c8389d877f1.jpg?v=1782938651","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fiop060f311ga-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}