{"product_id":"carrier-hp13nr03600gakaa-transformer-h4oyjb","title":"OEM Carrier Transformer 40VA 120\/24V for HP13NR03600GAKAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01AW229 for Model HP13NR03600GAKAA\u003c\/h1\u003e\u003cp\u003eThis OEM step-down control transformer (part# \u003cstrong\u003eHT01AW229\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier HP13NR03600GAKAA\u003c\/strong\u003e heat pump system. The transformer converts 120V line voltage to the 24V AC signal that powers your thermostat, contactor coil, and all low-voltage control circuits. When this component fails, the entire control circuit goes dead — your thermostat will display nothing, the system won't respond to any calls for heating or cooling, and no safety safeties or relays will function. It is often the first component to diagnose when \u003cem\u003enothing at all\u003c\/em\u003e appears to work.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V AC | Secondary: 24V AC | Factory-matched output for stable low-voltage control circuits | Replaces OEM part number HT01AW229\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM transformer wound to exact VA and voltage tolerances. Generic transformers can deliver inconsistent 24V output, causing nuisance lockouts, contactor chatter, and premature control board failures — making the OEM choice the cost-effective long-term option.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper. Label or photograph all low-voltage 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.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the \u003cstrong\u003eCarrier HP13NR03600GAKAA\u003c\/strong\u003e heat pump unit. Always verify your unit's data plate confirms a 40VA 120\/24V transformer specification before ordering. Our HVAC parts specialists are available to confirm fitment — reach out before you order if you have any questions. Order today and take advantage of same-day shipping on all in-stock parts.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909320724851,"sku":"CARRIE-HP13NR03600GAKAA-TRANSFORMER-HT01AW229","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909320757619,"sku":"CARRIE-HP13NR03600GAKAA-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_5f303034-671a-4c3c-b51c-f260c3c6371b.jpg?v=1782938764","url":"https:\/\/nationalhvacparts.com\/products\/carrier-hp13nr03600gakaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}