{"product_id":"carrier-gb1aav060135acja-transformer-h2usbz","title":"OEM Carrier 40VA Transformer 120V–24V for GB1AAV060135ACJA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 120V–24V for Model GB1AAV060135ACJA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier GB1AAV060135ACJA\u003c\/strong\u003e gas furnace. Its job is to step down 120V line voltage to the 24V low-voltage signal used by the thermostat, control board, gas valve, and all other control-circuit components. When this transformer fails, nothing in the control circuit receives power — the thermostat goes blank, the furnace will not respond to any call for heat or cooling, and the system appears completely dead. A blown fuse on the secondary side of the transformer is often the first warning sign.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V | Secondary: 24V | OEM part number HT01BC116 | Factory-matched impedance and thermal protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01BC116 transformer meets Carrier's exact VA rating and insulation class. Undersized or off-brand transformers can overheat, trip thermal cutoffs prematurely, or fail to sustain 24V under full control-circuit load — leading to intermittent lockouts and repeat service calls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify voltage is absent before proceeding. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Note wire colors and terminal positions before disconnecting. Replace inline fuse if blown. Restore power and confirm 24V output with a multimeter before closing the cabinet.\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 Designed for the Carrier \u003cstrong\u003eGB1AAV060135ACJA\u003c\/strong\u003e gas furnace. Always verify your existing transformer's VA rating and primary\/secondary voltages on the unit's data plate or wiring diagram before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909411787123,"sku":"CARRIE-GB1AAV060135ACJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909411819891,"sku":"CARRIE-GB1AAV060135ACJA-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_3b38b662-787d-4651-b3b5-139fb213b77c.jpg?v=1782899685","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb1aav060135acja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}