{"product_id":"carrier-pg8daa024070acja-transformer-h2usbz","title":"OEM Carrier Control Transformer 40VA 120V-24V for PG8DAA024070ACJA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 120V–24V for Model PG8DAA024070ACJA (HT01BC116 \/ HT680054)\u003c\/h1\u003e\u003cp\u003eThis OEM step-down control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier PG8DAA024070ACJA\u003c\/strong\u003e gas furnace. The transformer converts 120V line voltage down to the 24V AC that powers every low-voltage control circuit in the system — including the thermostat, gas valve, inducer relay, and control board. When it fails, the entire furnace goes silent: no thermostat response, no ignition sequence, and no fan operation. A failed transformer is one of the most common causes of a completely unresponsive furnace.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary Voltage: 120V AC | Secondary Voltage: 24V AC | VA Rating: 40VA | Frequency: 60 Hz | Phase: Single | Mounting: Foot-mount with wire leads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM unit (HT680054, the factory-authorized successor to HT01BC116) shipped in a Carrier factory-authorized parts box. Generic transformers often use thinner copper windings and lower-grade core laminations, leading to premature thermal failure — especially on systems with marginal wiring or borderline short circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output post-install). Label all wire connections before disconnecting. Check the 3A low-voltage fuse on the control board — a blown transformer often means a downstream short; replace the fuse and inspect wiring before restoring power.\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 when ordered by 5 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003ePG8DAA024070ACJA\u003c\/strong\u003e gas furnace. Part number HT680054 is the current factory-authorized replacement for discontinued OEM part HT01BC116. Also replaces HT01BC115, HT01BB126, HT01CT120, HT01BC120, and several additional legacy Carrier\/Bryant part numbers. Verify your unit's data plate voltage (120V primary) before ordering. Our fitment team is available to confirm compatibility before you buy — order with confidence.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62643240239475,"sku":"CARRIE-PG8DAA024070ACJA-TRANSFORMER-HT01BC116","price":52.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643240272243,"sku":"CARRIE-PG8DAA024070ACJA-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_71d2620d-d1ef-4388-96e4-3da6c8004502.jpg?v=1775025369","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg8daa024070acja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}