{"product_id":"carrier-pg9maa036080aaka-transformer-h2usbz","title":"OEM Carrier Furnace Transformer 120V-24V 40VA — PG9MAA036080AAKA","description":"\u003ch1\u003eOEM Carrier Furnace Transformer 120V–24V 40VA for Model PG9MAA036080AAKA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier PG9MAA036080AAKA\u003c\/strong\u003e gas furnace. The transformer steps down 120V line voltage to 24V AC, powering every low-voltage component in your system — including the thermostat circuit, gas valve, inducer relay, and control board. When it fails, nothing responds: the thermostat goes blank, the furnace won't fire, and the entire control circuit goes dead. Originally sold under part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e, this part has been superseded by OEM part number \u003cstrong\u003eHT680054\u003c\/strong\u003e — a factory-authorized drop-in replacement shipped in a Carrier-branded parts box.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input: 120V AC | Output: 24V AC | VA Rating: 40VA | Frequency: 60Hz | Mounting: Foot mount | Connection: Wire leads with pre-terminated connectors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact factory VA tolerance, ensuring stable 24V output under full system load. Generic units often under-deliver at peak demand, causing nuisance lockouts, erratic thermostat behavior, or premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Turn off all power to the furnace at the breaker and disconnect switch before touching any wiring. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 0V before touching leads). Photograph all wire connections before removal. Test output voltage (should read ~24–28V AC) after install before closing the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty on HT680054 successor part. Ships same business day from our warehouse when ordered by 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003ePG9MAA036080AAKA\u003c\/strong\u003e gas furnace. OEM part HT01BC116 is discontinued; HT680054 is the current factory-authorized direct replacement and installs identically. Also cross-references HT01BC115, HT01BB126, HT01BC120, and several other legacy Carrier\/Bryant\/Payne transformer part numbers — making it an excellent stock replacement for multi-unit service calls. Verify your unit's control voltage requirement (24V) on the data plate before ordering. Questions about fitment? Our team confirms compatibility before you order — \u003cstrong\u003eorder today and ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62642371559795,"sku":"CARRIE-PG9MAA036080AAKA-TRANSFORMER-HT01BC116","price":50.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642371592563,"sku":"CARRIE-PG9MAA036080AAKA-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_c99fcd19-0a7c-43fa-8c27-5a2c1cebeb8d.jpg?v=1775031514","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg9maa036080aaka-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}