{"product_id":"carrier-gb3aav024050abja-transformer-h2usbz","title":"OEM Carrier 40VA Transformer 120V-24V HT01BC116 — GB3AAV024050ABJA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BC116 for Model GB3AAV024050ABJA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part# HT01BC116) is the factory-specified replacement for the \u003cstrong\u003eCarrier GB3AAV024050ABJA\u003c\/strong\u003e gas furnace. The transformer steps down 120V line voltage to the 24V signal required to power your thermostat, control board, and all safety circuits. When it fails, the entire low-voltage control system goes dark — the thermostat loses power, the furnace won't respond to any call for heat or cooling, and nothing works. A failed transformer is often misdiagnosed as a bad control board, so always test transformer output voltage first before replacing costlier components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary input | 24V secondary output | Factory-matched OEM part number HT01BC116 | Direct drop-in replacement, no wiring modifications required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound and insulated to Carrier's exact factory specification, ensuring consistent 24V output under full load. Generic transformers frequently sag below 24V under peak demand, causing nuisance lockouts, erratic board behavior, and premature component failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the disconnect switch and breaker before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Measure primary and secondary voltage before and after replacement to confirm diagnosis. Label all low-voltage wiring before disconnecting.\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 Engineered specifically for the Carrier \u003cstrong\u003eGB3AAV024050ABJA\u003c\/strong\u003e gas furnace. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists will confirm fitment before you complete your purchase — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909406151027,"sku":"CARRIE-GB3AAV024050ABJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909406183795,"sku":"CARRIE-GB3AAV024050ABJA-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_c8d6fa99-fd26-40cf-903f-bc0423ba7cb0.jpg?v=1782899654","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb3aav024050abja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}