{"product_id":"carrier-pg9mab048100aasa-transformer-h2usbz","title":"OEM Carrier Control Transformer 120V-24V 40VA — PG9MAB048100AASA","description":"\u003ch1\u003eOEM Carrier Control Transformer 120V–24V 40VA for Model PG9MAB048100AASA (HT01BC116 \/ HT680054)\u003c\/h1\u003e\u003cp\u003eThis OEM step-down control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier PG9MAB048100AASA\u003c\/strong\u003e gas furnace. The transformer converts 120V line voltage down to 24V AC to power all low-voltage control circuit components — including the thermostat, gas valve, inducer relay, and IFC control board. When this transformer fails, the entire control circuit goes dead: the thermostat shows no response, the furnace will not initiate a heating cycle, and nothing happens when the system calls for heat. Note: OEM part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e has been superseded by \u003cstrong\u003eHT680054\u003c\/strong\u003e, the current factory-authorized direct replacement.\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 | Single Phase | Foot-mount configuration with wire lead connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to exact factory VA tolerances. Undersized or off-tolerance generic transformers overheat under full low-voltage load, tripping thermal cutoffs and causing intermittent lockouts — a common callback nightmare for technicians.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the breaker and disconnect the furnace before touching any wiring. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 0V before handling). Photograph all wire connections before removal. Match wire leads carefully: primary (120V) and secondary (24V) sides are both present.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered before 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003ePG9MAB048100AASA\u003c\/strong\u003e gas furnaces. Supersedes legacy part number HT01BC116; current shipping part is HT680054. Also replaces HT01BC115, HT01BB126, HT01CT120, HT01BC120, and several other Carrier\/Bryant\/Payne cross-references. Verify your unit's data plate voltage requirements before ordering. Our fitment team is available to confirm compatibility — just reach out before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62642156568947,"sku":"CARRIE-PG9MAB048100AASA-TRANSFORMER-HT01BC116","price":51.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642156601715,"sku":"CARRIE-PG9MAB048100AASA-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_80b1db20-ee01-45a0-ad2b-1ec55182780d.jpg?v=1775025356","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg9mab048100aasa-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}