{"product_id":"carrier-ph2ppb036000aa-transformer-h3025m","title":"OEM Carrier 40VA Control Transformer HT01BD242 for PH2PPB036000AA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BD242 for Model PH2PPB036000AA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01BD242\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PH2PPB036000AA\u003c\/strong\u003e heat pump system. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, control board, contactor coil, and all low-voltage control circuits. When this part fails, the entire control system goes dark — the thermostat loses power, the system won't respond to calls for heating or cooling, and in some cases a blown fuse on the secondary side is the first symptom you'll notice.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 120V primary | 24V secondary | 40VA rated | Class 2 transformer | Factory-matched output for low-voltage control circuit protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers like HT01BD242 are wound and rated to exact Carrier factory tolerances, ensuring stable 24V output under full load. Generic units may underperform at rated VA, causing intermittent control issues, nuisance lockouts, or premature fuse failures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit at the disconnect and breaker before proceeding. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 0V before touching wiring). Photograph all wiring connections before disconnecting the old transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the \u003cstrong\u003eCarrier PH2PPB036000AA\u003c\/strong\u003e heat pump. Always verify your unit's data plate confirms 120V primary input and 24V\/40VA secondary rating before ordering. Our parts specialists are available to confirm fitment — reach out before you buy if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641450353011,"sku":"CARRIE-PH2PPB036000AA-TRANSFORMER-HT01BD242","price":33.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641450385779,"sku":"CARRIE-PH2PPB036000AA-TRANSFORMER-HT01BD242-GEN","price":29.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BD242_0262082c-da8f-4a52-90e8-9e2f254f49e1.jpg?v=1775016240","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph2ppb036000aa-transformer-h3025m","provider":"National HVAC Parts","version":"1.0","type":"link"}