{"product_id":"carrier-ch13na04800gaaaa-transformer-h4oyjb","title":"OEM Carrier Transformer 40VA 24V for CH13NA04800GAAAA — HT01AW229","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model CH13NA04800GAAAA — Part# HT01AW229\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer (part number \u003cstrong\u003eHT01AW229\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier CH13NA04800GAAAA\u003c\/strong\u003e condensing unit. The control transformer converts 120V line voltage to 24V AC to power the low-voltage control circuit — including the thermostat, contactor coil, and any safety switches. When this transformer fails, the entire control circuit goes dead: the thermostat goes blank, the contactor won't pull in, and the system produces no response whatsoever. It is one of the first components to check when a system shows zero activity at the thermostat despite power being present at the disconnect.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input: 120V AC | Output: 24V AC | VA Rating: 40VA | Replaces OEM Part# HT01AW229 | Factory-matched impedance and thermal protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier OEM transformer built to factory specifications. Generic transformers frequently use undersized windings that overheat under normal HVAC control loads, leading to premature failure and potential damage to downstream components such as the control board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph all wiring connections before disconnecting. Verify 24V output with a multimeter after installation before restoring full system power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse when ordered before 3PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed and factory-matched for the Carrier \u003cstrong\u003eCH13NA04800GAAAA\u003c\/strong\u003e condensing unit. Always confirm input voltage and VA rating on your unit's data plate before ordering. If you are unsure about fitment, our HVAC parts specialists are available to verify compatibility before you purchase — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909627236723,"sku":"CARRIE-CH13NA04800GAAAA-TRANSFORMER-HT01AW229","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909627269491,"sku":"CARRIE-CH13NA04800GAAAA-TRANSFORMER-HT01AW229-GEN","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-HT01AW229_92d918d8-287e-4f74-87f2-59eb484bdfe9.jpg?v=1782942531","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ch13na04800gaaaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}