{"product_id":"carrier-gb3aav048095abja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120V\/24V for GB3AAV048095ABJA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model GB3AAV048095ABJA — Part# HT01BC116\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part# \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier GB3AAV048095ABJA\u003c\/strong\u003e gas furnace. The transformer steps down 120V line voltage to 24V AC to power the low-voltage control circuit — including the thermostat, gas valve, and IFC board. When the transformer fails, the entire control circuit goes dead: the thermostat displays nothing, the system won't respond to any call for heat or cooling, and no diagnostic codes appear. A failed transformer is often caused by a shorted low-voltage component or a miswired thermostat, so always inspect the secondary circuit before replacing.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | Mounts directly to blower compartment panel | OEM factory-matched windings and insulation class\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers use factory-spec copper windings and thermal protection rated to Carrier's exact load requirements. Generic units may lack thermal cutoffs, increasing the risk of re-failure if an underlying short is present.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the breaker and disconnect the furnace plug before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Verify 24V output on the secondary terminals after installation before restoring full system power.\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\u003eGB3AAV048095ABJA\u003c\/strong\u003e gas furnace using OEM part number HT01BC116. Always verify your existing transformer's VA rating and primary\/secondary voltages against your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you buy — same-day shipping on all in-stock orders.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909393633651,"sku":"CARRIE-GB3AAV048095ABJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909393666419,"sku":"CARRIE-GB3AAV048095ABJA-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_7414e8ac-d657-4d29-a421-d74e6d9b6edb.jpg?v=1782941437","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb3aav048095abja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}