{"product_id":"carrier-ph4gnxb60000aa-transformer-h3025m","title":"OEM Carrier Transformer 75VA 208\/240\/480V–24V for PH4GNXB60000AA","description":"\u003ch1\u003eOEM Carrier Control Transformer 75VA 208\/240\/480V to 24VAC for Model PH4GNXB60000AA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part #HT01BD242) is the factory-specified replacement for the \u003cstrong\u003eCarrier PH4GNXB60000AA\u003c\/strong\u003e packaged unit. The transformer steps high-voltage primary power (208\/240\/480V) down to the 24VAC signal voltage that powers every low-voltage control circuit in your system — including the thermostat, contactor coil, control board, and safety switches. When this transformer fails, the entire control circuit goes dead: the thermostat loses power, the system won't respond to any commands, and you may detect a faint burnt-electrical smell or audible buzzing from the transformer body itself.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 75VA rating | Primary: 208\/240\/480V multi-tap | Secondary: 24VAC | 50\/60Hz | Foot-mount configuration | OEM part #HT01BD242\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier factory part engineered to exact winding and insulation specifications. Off-brand substitutes often run at looser VA tolerances, risking coil overheating and nuisance control failures — especially under peak-load seasons.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Always shut off all power at the disconnect before servicing. Tools needed: multimeter (verify 0V before touching terminals), flat-head and Phillips screwdrivers, wire stripper, needle-nose pliers. Confirm primary tap wiring matches your supply voltage before energizing. Recommend a licensed HVAC technician for this repair.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as the direct OEM replacement for \u003cstrong\u003eCarrier model PH4GNXB60000AA\u003c\/strong\u003e packaged units. Always verify your supply voltage matches an available primary tap (208V, 240V, or 480V) and confirm the 75VA rating on your unit's data plate before ordering. Our parts team is available to verify fitment — order with confidence and get it shipped today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641227563379,"sku":"CARRIE-PH4GNXB60000AA-TRANSFORMER-HT01BD242","price":70.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641227596147,"sku":"CARRIE-PH4GNXB60000AA-TRANSFORMER-HT01BD242-GEN","price":23.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-HT01BD242_915adf1d-20d2-43d7-ab7b-0f1faeea78d3.jpg?v=1782943330","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph4gnxb60000aa-transformer-h3025m","provider":"National HVAC Parts","version":"1.0","type":"link"}