{"product_id":"carrier-gb3aav060115acja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120V-24V for GB3AAV060115ACJA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model GB3AAV060115ACJA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part# \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier GB3AAV060115ACJA\u003c\/strong\u003e gas furnace. The transformer steps down 120V line voltage to the 24V signal voltage that powers your thermostat circuit, control board, gas valve, and all low-voltage controls. When this component fails, the entire control circuit goes dark — the thermostat loses power, the furnace will not respond to any call for heat or cooling, and in many cases the system appears completely dead. A failed transformer is often mistaken for a bad control board, making correct diagnosis essential before ordering parts.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01BC116 | Factory-matched output for full control circuit compatibility\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01BC116 transformer is wound to exact VA and voltage tolerances required by the Carrier GB3AAV060115ACJA control board. Undersized or off-tolerance generic transformers can drop voltage under load, causing erratic board behavior, nuisance lockouts, or premature failure of downstream components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the breaker and disconnect switch before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Verify 0V at the transformer primary before touching any wiring. Label or photograph all 24V secondary connections prior to removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the Carrier \u003cstrong\u003eGB3AAV060115ACJA\u003c\/strong\u003e gas furnace. Confirm your existing transformer reads 120V primary \/ 24V secondary and carries a 40VA rating before ordering. If you are unsure of fitment, our parts specialists will verify compatibility at no charge before your order ships.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909388292467,"sku":"CARRIE-GB3AAV060115ACJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909388325235,"sku":"CARRIE-GB3AAV060115ACJA-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_5b292f9d-b131-452c-acbf-36f29464db1e.jpg?v=1782939860","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb3aav060115acja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}