{"product_id":"carrier-ga2aad060105aaja-transformer-h2usbz","title":"OEM Carrier 40VA Transformer 24V Control Circuit for GA2AAD060105AAJA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BC116 for Model GA2AAD060105AAJA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier GA2AAD060105AAJA\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to the 24V signal voltage that powers your thermostat, control board, contactor coil, and all low-voltage safety circuits. When this component fails, the entire control circuit goes dark — the thermostat becomes unresponsive, the system won't call for heating or cooling, and nothing appears to happen when you adjust the setpoint. A blown fuse on the secondary side or a burned winding are the most common failure modes.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input: 120VAC | Output: 24VAC | VA Rating: 40VA | OEM Part Number: HT01BC116 | Factory-matched winding tolerance for stable low-voltage output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers from Carrier deliver consistent 24V output under full load. Generic units often sag under peak demand, causing erratic thermostat behavior, nuisance lockouts, and premature contactor coil failure — false economy on a component this critical.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit at the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, wire nuts or spade terminals, multimeter to confirm 24V output after install. Photograph all wiring connections before disconnecting the old transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In-stock and 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 Engineered for Carrier model \u003cstrong\u003eGA2AAD060105AAJA\u003c\/strong\u003e. Confirm your existing transformer's input\/output voltage and VA rating on the unit data plate or wiring diagram before ordering. Our parts specialists are available to verify fitment — order with confidence and get your system back online today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909439246707,"sku":"CARRIE-GA2AAD060105AAJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909439279475,"sku":"CARRIE-GA2AAD060105AAJA-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_72a76e3d-01db-4fba-aa14-15e4fc758281.jpg?v=1782899809","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ga2aad060105aaja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}