{"product_id":"carrier-pg9maa024040afka-transformer-h2usbz","title":"OEM Carrier Furnace Transformer 40VA 120V-24V for PG9MAA024040AFKA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V–24V for Model PG9MAA024040AFKA (Replaces HT01BC116)\u003c\/h1\u003e\u003cp\u003eThis OEM step-down control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier PG9MAA024040AFKA\u003c\/strong\u003e gas furnace. The transformer converts 120V line voltage down to the 24V signal voltage that powers your thermostat, control board, gas valve, and all low-voltage control circuits. When it fails, the furnace goes completely silent — no ignition attempt, no thermostat response, no fan activity. If your 24V fuse keeps blowing or your system is completely unresponsive, a failed transformer is one of the first components to test.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA capacity | 120V primary \/ 24V secondary | 50\/60 Hz single-phase | Wire lead connections | Replaces OEM part number HT01BC116 (superseded by HT680054)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound to Carrier's exact VA and impedance tolerances. Generic transformers frequently run under-rated, causing nuisance fuse failures and erratic thermostat behavior — especially in variable-speed or two-stage furnace control circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Turn off all power at the breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output post-install). Photograph wiring connections before removal. Note: discharge any residual voltage before handling terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. In-stock units ship the same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM drop-in replacement for \u003cstrong\u003eCarrier model PG9MAA024040AFKA\u003c\/strong\u003e gas furnaces. Also replaces legacy part numbers HT01BC116, HT01BC115, HT01BB126, HT01CT120, and several other Carrier\/Bryant\/Payne transformer variants — verify primary voltage (120V) and VA rating (40VA) against your unit's data plate before ordering. Order before 5 PM and your part ships today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62642444009843,"sku":"CARRIE-PG9MAA024040AFKA-TRANSFORMER-HT01BC116","price":50.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642444042611,"sku":"CARRIE-PG9MAA024040AFKA-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_fae1e6d5-8786-495b-a535-fe1dcfc23073.jpg?v=1775031703","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg9maa024040afka-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}