{"product_id":"carrier-pg8maa036045acja-transformer-h2usbz","title":"OEM Carrier 40VA Transformer 120V-24V for PG8MAA036045ACJA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 120V–24V for Model PG8MAA036045ACJA\u003c\/h1\u003e\u003cp\u003eThis is the factory-specified OEM replacement control transformer for the \u003cstrong\u003eCarrier PG8MAA036045ACJA\u003c\/strong\u003e gas furnace. The transformer steps down 120V line voltage to the 24V AC signal required to power your thermostat, gas valve, control board, and all low-voltage safety circuits. When this transformer fails, the entire control circuit goes dark — symptoms include a completely blank thermostat display, no response to heat calls, and a furnace that won't attempt ignition despite having power at the unit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V AC primary | 24V AC secondary | 60 Hz | Foot-mount configuration | Wire lead connections | Factory OEM part HT01BC116 (superseded by HT680054)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and potted to exact VA tolerances, protecting downstream low-voltage components. Aftermarket units frequently deliver unstable secondary voltage, causing nuisance lockouts, control board damage, or premature gas valve failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the furnace before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter to verify 24V output after install. Label all wire leads before disconnecting the old transformer. A blown fuse on the control board often accompanies transformer failure — inspect and replace as needed.\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 Direct OEM replacement for the \u003cstrong\u003eCarrier PG8MAA036045ACJA\u003c\/strong\u003e gas furnace. Also replaces cross-reference part numbers HT680054, HT01BC115, HT01BB126, HT01BC120, and HT01AW115 across the Carrier, Bryant, and Payne furnace family. Always verify your existing transformer's primary\/secondary voltage and VA rating from the 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":62643071615347,"sku":"CARRIE-PG8MAA036045ACJA-TRANSFORMER-HT01BC116","price":67.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643071648115,"sku":"CARRIE-PG8MAA036045ACJA-TRANSFORMER-HT01BC116-GEN","price":59.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC116_d6bfe8e2-bf79-4da8-bf6a-403dba78dc03.jpg?v=1775016265","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg8maa036045acja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}