{"product_id":"carrier-pg9mab048080aasa-transformer-h2usbz","title":"OEM Carrier Furnace Transformer 120V-24V 40VA — PG9MAB048080AASA","description":"\u003ch1\u003eOEM Carrier Furnace Transformer 120V–24V 40VA for Model PG9MAB048080AASA (HT01BC116 \/ HT680054)\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier PG9MAB048080AASA\u003c\/strong\u003e gas furnace. It converts 120V AC line voltage down to 24V AC to power the furnace's entire low-voltage control circuit — including the thermostat, control board, gas valve, and ignition system. When the transformer fails, the furnace goes completely silent: no inducer, no spark, no heat. If you're reading 0V between the R and C terminals on your control board, a failed transformer is the first thing to rule out.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input Voltage: 120V AC | Output Voltage: 24V AC | VA Rating: 40VA | Frequency: 60Hz | Connection: Wire leads with foot mount | Includes integrated 3A fuse protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound to exact factory VA and voltage tolerances. Generic transformers frequently run off-spec voltage output, causing nuisance lockouts, erratic thermostat behavior, and premature control board failure — a far more expensive repair.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Label or photograph all wire connections before disconnecting the old unit. Verify 24V output at R–C terminals after installation to confirm correct operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. Ships same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility Note:\u003c\/strong\u003e Designed for Carrier model \u003cstrong\u003ePG9MAB048080AASA\u003c\/strong\u003e gas furnaces. OEM part number HT01BC116 has been superseded by HT680054 — both are the same factory-spec 120V–24V 40VA unit. Also cross-references: HT01BC115, HT01BB126, HT01BC120, HT01AW115, and 322666-701. Confirm your unit's control voltage on the data plate before ordering. Our fitment team is available to verify compatibility prior to purchase.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62642161222003,"sku":"CARRIE-PG9MAB048080AASA-TRANSFORMER-HT01BC116","price":50.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642161254771,"sku":"CARRIE-PG9MAB048080AASA-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_9b73f5a2-c849-4228-8061-62384840c968.jpg?v=1775031534","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg9mab048080aasa-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}