{"product_id":"carrier-upflow125u60m19-transformer-h3hvc4","title":"OEM Carrier 40VA Transformer 120V–24V HT01CN001 for UPFLOW125U60M19","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 120V to 24V — HT01CN001 for Model UPFLOW125U60M19\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier replacement control transformer (part #HT01CN001) factory-specified for the \u003cstrong\u003eCarrier UPFLOW125U60M19\u003c\/strong\u003e upflow gas furnace. The transformer steps down 120V line voltage to a safe 24V (with 12V tap) to power your furnace's entire low-voltage control circuit — including the thermostat, control board, gas valve, and all safety switches. When it fails, the entire system goes dark: the thermostat loses power, the furnace will not respond to any call for heat, and you may notice a faint buzzing or burning smell near the control box.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 120V Primary | 24V \/ 12V Secondary | 40VA Rating | Factory-matched Carrier OEM unit | Class 2 control transformer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01CN001 is wound to exact factory tolerances, ensuring stable 24V output under full load. Generic substitutes can sag under load, causing intermittent control board resets, nuisance lockouts, and premature board failure — costing far more to diagnose and repair than the transformer itself.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Shut off all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, a multimeter (to verify 24V output post-install), and wire labels. Photograph all wiring connections before disconnecting. The transformer mounts inside the furnace cabinet with two screws and uses push-on or screw terminals on both primary and secondary sides.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM Carrier factory warranty. In-stock and ships same business day from our warehouse — no extended lead times.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003eUPFLOW125U60M19\u003c\/strong\u003e upflow gas furnace. Replaces legacy part numbers HT01BJ115 and 19EA41612. Always confirm 120V primary \/ 24V secondary \/ 40VA on your unit's data plate before ordering. Have a fitment question? Our HVAC parts specialists verify compatibility before you buy — contact us today and get back up and running fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640233054579,"sku":"CARRIE-UPFLOW125U60M19-TRANSFORMER-HT01CN001","price":353.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640233087347,"sku":"CARRIE-UPFLOW125U60M19-TRANSFORMER-HT01CN001-GEN","price":311.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01CN001_0c64daa1-589a-4f88-ad4b-8ea13d2b4534.jpg?v=1775016389","url":"https:\/\/nationalhvacparts.com\/products\/carrier-upflow125u60m19-transformer-h3hvc4","provider":"National HVAC Parts","version":"1.0","type":"link"}