{"product_id":"carrier-ph13nr04200gajaa-transformer-h4oyjb","title":"OEM Carrier 40VA Transformer HT01AW229 for PH13NR04200GAJAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01AW229 for Model PH13NR04200GAJAA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier PH13NR04200GAJAA\u003c\/strong\u003e heat pump system. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, control board, and safety circuits. When this component fails, \u003cstrong\u003enothing works\u003c\/strong\u003e — the thermostat goes blank, the system is completely unresponsive, and no heating or cooling cycle can be initiated. It is one of the first components to test during a total system no-response diagnosis.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | Factory OEM part number HT01AW229 | Direct plug-and-play replacement for factory original\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier OEM transformer, wound to exact VA rating and insulation class. Generic transformers are often underrated and prone to early burnout, especially in high-demand multi-stage heat pump applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the breaker and disconnect the thermostat wires before removing the old transformer. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Verify 24V output across secondary terminals after installation before restoring thermostat wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships the 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 \u003cstrong\u003eCarrier model PH13NR04200GAJAA\u003c\/strong\u003e heat pump systems. Always confirm your unit's wiring diagram and VA requirement before ordering. Our HVAC parts specialists are available to verify fitment — contact us before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641861296499,"sku":"CARRIE-PH13NR04200GAJAA-TRANSFORMER-HT01AW229","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641861329267,"sku":"CARRIE-PH13NR04200GAJAA-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_daf385c9-5626-4f81-923d-50fd3310bc23.jpg?v=1775016528","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph13nr04200gajaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}