{"product_id":"carrier-upflow100fauac14b-transformer-h3hvc4","title":"OEM Carrier Furnace Transformer 120V\/24V 40VA — UPFLOW100FAUAC14B","description":"\u003ch1\u003eOEM Carrier Furnace Transformer 120V to 24V 40VA for Model UPFLOW100FAUAC14B\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01CN001\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier UPFLOW100FAUAC14B\u003c\/strong\u003e upflow gas furnace. The transformer steps down 120V line voltage to 24V to power the low-voltage control circuit — including the thermostat, gas valve, inducer relay, and control board. When this component fails, the entire control circuit goes dark: your thermostat goes blank, the furnace will not initiate a heat cycle, and nothing responds. It is one of the first components to inspect when a furnace is completely unresponsive.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 120V primary | 24V \/ 12V secondary | 40VA power rating | Direct OEM replacement for HT01CN001 | Also replaces legacy part numbers HT01BJ115, 19EA41612, and 19EA42612\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the factory-spec OEM unit, wound to exact VA and voltage tolerances required by Carrier. Undersized or generic transformers can overload, trip built-in thermal protection, and damage connected control boards — costing far more than the part itself.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Turn off all power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before removal. Confirm 24V output with a multimeter after installation before restoring full power.\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 UPFLOW100FAUAC14B\u003c\/strong\u003e upflow gas furnace. Verify your unit's data plate confirms the 120V primary \/ 24V secondary \/ 40VA specification before ordering. Have questions about fitment? Our HVAC parts specialists verify compatibility before you purchase — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640237642099,"sku":"CARRIE-UPFLOW100FAUAC14B-TRANSFORMER-HT01CN001","price":35.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640237674867,"sku":"CARRIE-UPFLOW100FAUAC14B-TRANSFORMER-HT01CN001-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01CN001.jpg?v=1775031568","url":"https:\/\/nationalhvacparts.com\/products\/carrier-upflow100fauac14b-transformer-h3hvc4","provider":"National HVAC Parts","version":"1.0","type":"link"}