{"product_id":"carrier-pg8uaa066111abja-transformer-h2usbz","title":"OEM Carrier Furnace Transformer 120V-24V 40VA — PG8UAA066111ABJA","description":"\u003ch1\u003eOEM Carrier Furnace Control Transformer 120V–24V 40VA for Model PG8UAA066111ABJA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier PG8UAA066111ABJA\u003c\/strong\u003e gas furnace, cross-referencing original part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e (superseded by HT680054). The transformer steps down 120V line voltage to the 24V AC signal that powers the entire low-voltage control circuit — including the thermostat, gas valve, inducer relay, and ignition board. When it fails, the furnace goes completely unresponsive: the thermostat calls for heat but nothing happens, or you may notice a blown 3A fuse on the control board as a telltale sign of transformer failure.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary voltage: 120 VAC | Secondary voltage: 24 VAC | VA Rating: 40VA | Frequency: 50\/60 Hz | Phase: Single | Replaces OEM part HT01BC116 \/ HT680054\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier transformer wound to exact factory VA and impedance specifications. Generic aftermarket transformers often run off-tolerance, causing erratic 24V rail voltage, nuisance board faults, and premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Power down the furnace and verify 0V at the transformer primary before touching any wires. Tools needed: flathead and Phillips screwdrivers, multimeter, needle-nose pliers. Label all wire connections before removal. Check and replace the 3A fuse on the control board if blown — a failed transformer is frequently the cause.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer 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 Fits Carrier model \u003cstrong\u003ePG8UAA066111ABJA\u003c\/strong\u003e gas furnace. This part also supersedes multiple legacy Carrier\/Bryant\/Payne transformer part numbers including HT01BC116, HT01BC115, HT01BB126, HT01CT120, HT01BC120, HT01AW115, and HT01AA012. Always verify primary voltage (120V) and VA rating (40VA) on your unit's data plate before ordering. Have a fitment question? Our HVAC parts specialists verify compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62642692194675,"sku":"CARRIE-PG8UAA066111ABJA-TRANSFORMER-HT01BC116","price":50.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642692227443,"sku":"CARRIE-PG8UAA066111ABJA-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_499ef5e2-306b-4a8b-91a6-7c05d54c4da9.jpg?v=1775031506","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg8uaa066111abja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}