{"product_id":"carrier-ph4gexb36000aa-transformer-h3025m","title":"OEM Carrier Transformer 75VA 208\/240\/480V–24V for PH4GEXB36000AA","description":"\u003ch1\u003eOEM Carrier Control Transformer 75VA 208\/240\/480V to 24VAC for Model PH4GEXB36000AA\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-specified control transformer for the \u003cstrong\u003eCarrier PH4GEXB36000AA\u003c\/strong\u003e packaged heat pump unit. The transformer steps down high-voltage line power (208\/240\/480V primary) to the 24VAC signal voltage that powers your thermostat, contactor coil, and all control-circuit components. When this transformer fails, the entire control circuit goes dead — the thermostat goes blank, the system refuses to respond to any call for heating or cooling, and no relay or contactor will energize. Replacing it with the correct OEM unit is the fastest path back to a fully functioning system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 75VA capacity | 208\/240\/480V primary input | 24VAC secondary output | 50\/60 Hz | Foot-mount configuration | OEM Part #HT01BD242\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM Carrier transformers are wound and potted to exact factory VA ratings and insulation class. Undersized or off-tolerance aftermarket units can overheat under full control-circuit load, causing nuisance shutdowns or premature failure of downstream components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24VAC output post-install). Always label and photograph all wiring connections before removal. Foot-mount design simplifies bracket alignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. In-stock units ship the same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003ePH4GEXB36000AA\u003c\/strong\u003e packaged heat pump units. Also cross-compatible with select Bryant, Payne, and ICP family units sharing the same 75VA, 208\/240\/480V–24V control transformer specification — verify your unit's data plate before ordering. Have a fitment question? Our HVAC parts specialists confirm compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641236705651,"sku":"CARRIE-PH4GEXB36000AA-TRANSFORMER-HT01BD242","price":70.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641236738419,"sku":"CARRIE-PH4GEXB36000AA-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_cd96d62d-c542-470f-93f5-bbb3538c7b34.jpg?v=1782943314","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph4gexb36000aa-transformer-h3025m","provider":"National HVAC Parts","version":"1.0","type":"link"}