{"product_id":"carrier-pg8jaa042090acja-transformer-h2usbz","title":"OEM Carrier Furnace Transformer 120V-24V 40VA — PG8JAA042090ACJA","description":"\u003ch1\u003eOEM Carrier Furnace Transformer 120V–24V 40VA for Model PG8JAA042090ACJA\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier PG8JAA042090ACJA\u003c\/strong\u003e gas furnace. It converts 120V line voltage down to 24V AC to power all low-voltage control circuit components — including the thermostat, gas valve, inducer relay, and control board. When the transformer fails, the entire low-voltage control circuit goes dead: the thermostat display may go blank, the furnace won't respond to any call for heat, and nothing in the system will energize. OEM part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e has been superseded by the current authorized replacement \u003cstrong\u003eHT680054\u003c\/strong\u003e, which is a drop-in, factory-authorized upgrade shipped in a Carrier factory parts box.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 120V primary | 24V secondary | 40VA rating | 50\/60 Hz | Single phase | Foot-mount | Wire lead connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact factory VA and voltage tolerances. Generic units can deliver fluctuating secondary voltage that stresses control boards and shortens the life of downstream low-voltage components.\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. Measure 24V output across the R and C terminals on the control board to confirm the old transformer has failed before replacing. Always photograph all wiring connections before disconnecting leads.\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 Carrier model \u003cstrong\u003ePG8JAA042090ACJA\u003c\/strong\u003e gas furnace. This part supersedes HT01BC116, HT01BC115, HT01BC120, HT01BB126, and related legacy part numbers. Verify 120V primary and 24V\/40VA secondary on your unit's data plate before ordering. Need help confirming fitment? Our HVAC parts specialists will verify compatibility before you buy — order today and get same-day shipping.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62643206324595,"sku":"CARRIE-PG8JAA042090ACJA-TRANSFORMER-HT01BC116","price":50.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643206357363,"sku":"CARRIE-PG8JAA042090ACJA-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_d15b0787-525a-46f1-8aae-951c7ef48c54.jpg?v=1775031480","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg8jaa042090acja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}