{"product_id":"carrier-pg8uaa048135adja-transformer-h2usbz","title":"OEM Carrier Furnace Transformer 40VA 120V\/24V — PG8UAA048135ADJA","description":"\u003ch1\u003eOEM Carrier Furnace Control Transformer 40VA 120V\/24V for Model PG8UAA048135ADJA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier PG8UAA048135ADJA\u003c\/strong\u003e gas furnace. The transformer steps down 120V line voltage to the 24V signal voltage required to power the thermostat circuit, control board, gas valve, and all low-voltage safety controls. When this transformer fails — whether from a shorted wire, a failed board drawing excess current, or simply age — the entire control circuit goes dead: the thermostat goes blank, the furnace won't respond to calls for heat, and nothing works. Replacing it is one of the fastest and most cost-effective furnace repairs available.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA Rating | 120V Primary \/ 24V Secondary | 50\/60 Hz | Single Phase | Compact chassis-mount design (3\" L × 2-2\/16\" W × 2\" H)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound to exact factory VA and impedance tolerances, ensuring stable 24V output under all load conditions. Generic transformers often run hot under peak control-board demand, shortening lifespan and risking repeat failures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off furnace power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Always note wire colors before disconnecting. Check for shorted 24V wiring before installing the new transformer to avoid immediate re-failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. In stock — ships same business day when ordered by 5 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for Carrier model \u003cstrong\u003ePG8UAA048135ADJA\u003c\/strong\u003e gas furnace. OEM part number HT01BC116, superseded by current production part HT680054 — both are the same factory-spec transformer. Verify 120V primary \/ 24V secondary \/ 40VA rating on your unit's wiring diagram or data plate before ordering. Our fitment team is available to confirm compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62642747638131,"sku":"CARRIE-PG8UAA048135ADJA-TRANSFORMER-HT01BC116","price":50.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642747670899,"sku":"CARRIE-PG8UAA048135ADJA-TRANSFORMER-HT01BC116-GEN","price":44.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC116_a98b555d-b5ce-438c-9ff1-a9c237440ccd.jpg?v=1775031838","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg8uaa048135adja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}