{"product_id":"carrier-ga2aad060105abja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120V\/24V for GA2AAD060105ABJA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V to 24V for Model GA2AAD060105ABJA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part# \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier GA2AAD060105ABJA\u003c\/strong\u003e packaged gas\/electric unit. The transformer steps down 120V line voltage to the 24V signal needed to power the control board, thermostat, and all low-voltage control circuits. When this transformer fails, the entire control circuit goes dead — your thermostat goes blank, the system refuses to respond to any call for heating or cooling, and you may measure 0V at the 24V secondary terminals. It is one of the first components to check when nothing in the system responds.\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 HT01BC116 | Factory-matched primary and secondary winding tolerances\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and insulated to exact Carrier factory specifications, ensuring stable 24V output under full control-circuit load. Generic alternatives may sag under load, causing erratic board behavior, nuisance lockouts, or premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the breaker and verify with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Photograph all wiring connections before disconnecting the old unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Carrier \u003cstrong\u003eGA2AAD060105ABJA\u003c\/strong\u003e packaged unit. Always verify your existing transformer's input voltage, output voltage, and VA rating against your unit's data plate before completing your order. Our fitment team is available to confirm compatibility before you buy — reach out with your model and serial number and we'll verify the match. Order today and your part ships the same business day.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909438984563,"sku":"CARRIE-GA2AAD060105ABJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909439017331,"sku":"CARRIE-GA2AAD060105ABJA-TRANSFORMER-HT01BC116-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-HT01BC116_1b69a3a5-c534-4204-88df-0d7825d93706.jpg?v=1782941336","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ga2aad060105abja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}