{"product_id":"carrier-upflow125uahac14b-transformer-h3hvc4","title":"OEM Carrier 40VA Transformer 120V–24V for UPFLOW125UAHAC14B","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01CN001 for Model UPFLOW125UAHAC14B\u003c\/h1\u003e\u003cp\u003eThis OEM replacement control transformer (part number \u003cstrong\u003eHT01CN001\u003c\/strong\u003e) is the factory-specified unit for the \u003cstrong\u003eCarrier UPFLOW125UAHAC14B\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 transformer fails, the entire control circuit goes dead: the thermostat gets no power, nothing responds, and the furnace won't attempt a heat cycle at all.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Designed to factory OEM tolerances | Direct plug-in or wire-in replacement for Carrier UPFLOW125UAHAC14B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier transformer, matched to the exact VA rating and terminal configuration of your unit. Generic transformers may be under-rated, causing nuisance trips on high-demand control circuits or premature failure under load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage before touching any terminals. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Always photograph existing wiring 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 Confirmed fit for Carrier model \u003cstrong\u003eUPFLOW125UAHAC14B\u003c\/strong\u003e upflow gas furnace. Always verify your existing transformer's VA rating and primary\/secondary voltages on the data plate before ordering. Our HVAC parts specialists are available to confirm fitment — just reach out before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640229679475,"sku":"CARRIE-UPFLOW125UAHAC14B-TRANSFORMER-HT01CN001","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640229712243,"sku":"CARRIE-UPFLOW125UAHAC14B-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_95e46997-3c4d-4e4a-b27e-621bbb6f727b.jpg?v=1775016378","url":"https:\/\/nationalhvacparts.com\/products\/carrier-upflow125uahac14b-transformer-h3hvc4","provider":"National HVAC Parts","version":"1.0","type":"link"}