{"product_id":"carrier-pg8uaa042091aaja-transformer-h2usbz","title":"OEM Carrier 40VA Transformer HT01BC116 for PG8UAA042091AAJA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BC116 for Model PG8UAA042091AAJA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement control transformer (part# \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) is the factory-specified unit for the \u003cstrong\u003eCarrier PG8UAA042091AAJA\u003c\/strong\u003e gas furnace. The transformer steps down 120V line voltage to the 24V AC signal that powers your thermostat circuit, control board, gas valve, and all low-voltage safety controls. When it fails, the entire control circuit goes dark — nothing responds, no heat is called, and the system appears completely dead. A blown fuse on the transformer secondary side is often the first symptom before full failure.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | OEM factory-matched output tolerance | Replaces OEM part number HT01BC116\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and potted to Carrier's exact VA and impedance spec. Under-rated generic units overheat under full 24V load (gas valve + board + thermostat simultaneously), leading to premature failure or nuisance fuse trips.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter to confirm 24V output after install. Label all wiring before disconnecting. Always replace the control board fuse if it was blown prior to transformer failure.\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 Engineered specifically for the \u003cstrong\u003eCarrier PG8UAA042091AAJA\u003c\/strong\u003e packaged gas furnace. Always verify your existing transformer's VA rating and primary\/secondary voltages against your unit's data plate before ordering. Need help confirming fitment? Our HVAC parts team is ready to verify compatibility before you purchase.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62642760647027,"sku":"CARRIE-PG8UAA042091AAJA-TRANSFORMER-HT01BC116","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642760679795,"sku":"CARRIE-PG8UAA042091AAJA-TRANSFORMER-HT01BC116-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC116_cb4437f0-c765-4e1e-91e3-8a815b5efae3.jpg?v=1775016567","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg8uaa042091aaja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}