{"product_id":"carrier-ch13na02400gaaba-transformer-h4oyjb","title":"OEM Carrier Transformer 40VA 120V\/24V for CH13NA02400GAABA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model CH13NA02400GAABA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01AW229\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier CH13NA02400GAABA\u003c\/strong\u003e split-system condenser. The transformer steps down 120V line voltage to the 24V AC signal that powers the entire low-voltage control circuit — including the thermostat, contactor coil, and any safety switches. When it fails, the result is typically a completely unresponsive system: the thermostat goes blank, the contactor never pulls in, and no cooling occurs despite the disconnect being live.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input 120V AC | Output 24V AC | 40VA rated | Foot-mount configuration | OEM part number HT01AW229 | Factory-matched for Carrier CH13NA02400GAABA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and insulated to Carrier's exact VA and thermal specifications. Undersized or off-tolerance generic units can overheat under peak low-voltage load, tripping the internal thermal fuse and causing intermittent failures that are difficult to diagnose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power at the disconnect box before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label or photograph all low-voltage wiring connections before removing the old transformer. Secure wire nuts firmly after installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed by 3 PM local time ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eCH13NA02400GAABA\u003c\/strong\u003e split-system condenser. Verify your unit's control circuit voltage and VA requirement on the data plate before ordering. If you have multiple model variants or are unsure of fitment, our HVAC parts specialists are available to confirm compatibility before you buy — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909639295347,"sku":"CARRIE-CH13NA02400GAABA-TRANSFORMER-HT01AW229","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909639328115,"sku":"CARRIE-CH13NA02400GAABA-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_c0cc6413-5153-474d-996b-7fe6c576941f.jpg?v=1782940747","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ch13na02400gaaba-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}