{"product_id":"carrier-ph13nr03600gajaa-transformer-h4oyjb","title":"OEM Carrier Transformer 40VA 120V→24V for PH13NR03600GAJAA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V to 24V for Model PH13NR03600GAJAA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01AW229\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PH13NR03600GAJAA\u003c\/strong\u003e heat pump system. The transformer steps down 120V line voltage to the 24V low-voltage signal used to power the thermostat circuit, control board, and all relay coils throughout the system. When this transformer fails, the entire control circuit goes dark — the thermostat loses power, the contactor coil cannot energize, and the system will not respond to any call for heating or cooling. If your unit is completely unresponsive despite having line voltage at the unit, a failed transformer is one of the first components to test.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input: 120V AC | Output: 24V AC | VA Rating: 40VA | OEM Part Number: HT01AW229 | Factory-matched footprint and wire gauge for direct drop-in replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine OEM Carrier transformer, wound to exact factory VA and voltage specifications. Generic transformers frequently carry loose tolerances that can under-power sensitive control boards or overheat under full relay load, risking secondary component damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to confirm 24V output after install). Photograph or label all low-voltage wiring before disconnecting. Most technicians complete this swap in under 30 minutes.\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.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM replacement for the \u003cstrong\u003eCarrier PH13NR03600GAJAA\u003c\/strong\u003e heat pump. Always verify input voltage and VA rating on your unit's wiring diagram or data plate before ordering. Have a question about fitment? Our HVAC parts specialists are available to confirm compatibility before you buy — order with confidence and get back up and running today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641867522419,"sku":"CARRIE-PH13NR03600GAJAA-TRANSFORMER-HT01AW229","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641867555187,"sku":"CARRIE-PH13NR03600GAJAA-TRANSFORMER-HT01AW229-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01AW229_0a1cb1af-2c2c-46e1-8322-934c17c61fd4.jpg?v=1775041463","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph13nr03600gajaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}