{"product_id":"carrier-ph2ppb042000aa-transformer-h3025m","title":"OEM Carrier Transformer 75VA 208\/240\/480V–24V for PH2PPB042000AA","description":"\u003ch1\u003eOEM Carrier Control Transformer 75VA 208\/240\/480V to 24VAC for Model PH2PPB042000AA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement control transformer for the \u003cstrong\u003eCarrier PH2PPB042000AA\u003c\/strong\u003e packaged heat pump unit. The transformer steps down high-voltage power (208\/240\/480V primary) to the 24VAC signal required to energize your thermostat, control board, and all low-voltage relays. When this transformer fails, the entire control circuit goes dead — the system will not respond to the thermostat, contactors will not pull in, and nothing will operate. No hum, no click, no heat or cooling.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 75VA power rating | Primary: 208\/240\/480V | Secondary: 24VAC | Frequency: 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 OEM transformer wound to exact factory VA and voltage tolerances. Generic transformers frequently run under-rated VA, causing premature overheating, nuisance tripping of the internal fuse, and shortened control board life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Disconnect ALL power before servicing. High-voltage primary leads (up to 480V) are present inside the unit. Tools needed: multimeter (verify 24VAC output after install), wire stripper, screwdriver set, needle-nose pliers. Always verify primary tap matches your supply voltage before wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty included. In-stock units ship 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 PH2PPB042000AA\u003c\/strong\u003e packaged heat pump. This transformer is also cross-compatible with select Carrier, Bryant, and Payne packaged and split-system units sharing the HT01BD242 specification — verify your unit's data plate primary voltage tap before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641449435507,"sku":"CARRIE-PH2PPB042000AA-TRANSFORMER-HT01BD242","price":70.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641449468275,"sku":"CARRIE-PH2PPB042000AA-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_1f496b9a-5b05-48ff-82bf-9540a4fb2c12.jpg?v=1782943255","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph2ppb042000aa-transformer-h3025m","provider":"National HVAC Parts","version":"1.0","type":"link"}