{"product_id":"carrier-pg8maa048110adja-transformer-h2usbz","title":"OEM Carrier Transformer 120V-24V 40VA for PG8MAA048110ADJA","description":"\u003ch1\u003eOEM Carrier Control Transformer 120V–24V 40VA for Model PG8MAA048110ADJA\u003c\/h1\u003e\u003cp\u003eThis OEM step-down control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier PG8MAA048110ADJA\u003c\/strong\u003e gas furnace. It converts 120V line voltage down to 24V to power the low-voltage control circuit — including the thermostat, gas valve, inducer relay, and control board. When the transformer fails, the entire control circuit goes dark: the thermostat loses power, nothing responds, and the furnace will not attempt to start. A failed transformer is often misdiagnosed as a bad control board, making correct identification of this part critical before replacing more expensive components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary Voltage: 120VAC | Secondary Voltage: 24VAC | VA Rating: 40VA | Frequency: 50\/60 Hz | Phase: Single | OEM Part: HT01BC116 (superseded by HT680054)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM-spec transformer engineered to Carrier's exact VA tolerance and insulation class. Generic transformers frequently run outside rated VA, causing nuisance tripped fuses and premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Turn off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output post-install). Label all low-voltage wires before removing the old transformer. The transformer mounts inside the furnace cabinet and connects to both the line-voltage harness and the 24V control wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer 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 for Carrier model \u003cstrong\u003ePG8MAA048110ADJA\u003c\/strong\u003e gas furnaces. OEM part number HT01BC116 has been superseded by HT680054 — both are covered by this listing. Verify your unit's data plate shows 120V primary control circuit before ordering. Our team is available to confirm fitment prior to purchase — order with confidence and get your furnace back online today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62642959679859,"sku":"CARRIE-PG8MAA048110ADJA-TRANSFORMER-HT01BC116","price":51.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642959712627,"sku":"CARRIE-PG8MAA048110ADJA-TRANSFORMER-HT01BC116-GEN","price":45.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC116_f36bfc06-fb86-4220-85e1-c1ecef113a43.jpg?v=1775040977","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg8maa048110adja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}