{"product_id":"carrier-ph1ppb036000abaa-transformer-h3025m","title":"OEM Carrier Transformer 75VA 208\/240\/480V–24V for PH1PPB036000ABAA","description":"\u003ch1\u003eOEM Carrier Control Transformer 75VA 208\/240\/480V to 24V for Model PH1PPB036000ABAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement control transformer (part number \u003cstrong\u003eHT01BD242\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier PH1PPB036000ABAA\u003c\/strong\u003e packaged heat pump unit. The transformer steps down line voltage (208\/240\/480V primary) to the 24V AC signal that powers the entire low-voltage control circuit — including the thermostat, contactor coil, reversing valve, and control board. At a robust \u003cstrong\u003e75VA\u003c\/strong\u003e rating, it handles the full control load of multi-stage packaged equipment without overheating. When this transformer fails, the result is total system non-response: the thermostat goes dark, no contactors pull in, and no staging occurs — essentially the unit is completely dead despite line voltage being present at the unit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 75VA rating | Primary: 208\/240\/480V (50\/60 Hz) | Secondary: 24VAC | Foot-mount configuration | OEM part number HT01BD242\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the exact factory-specified transformer. OEM units are wound to precise VA tolerances, protecting downstream controls. Generic transformers often run hot under full control load, causing nuisance trips or premature secondary winding failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Requires disconnecting line voltage at the disconnect box before accessing the transformer. Tools needed: multimeter (confirm 0V before touching), #2 Phillips screwdriver, wire nuts or spade terminals. Always verify 24VAC output after installation before restoring low-voltage wiring to the board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock units ship same business day from our warehouse when ordered by cutoff time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the Carrier \u003cstrong\u003ePH1PPB036000ABAA\u003c\/strong\u003e packaged heat pump unit. Cross-compatible with Bryant and ICP family units sharing the HT01BD242 specification — always verify primary voltage (208\/240\/480V) and 75VA rating against your unit's data plate before ordering. Our parts specialists are available to confirm fitment prior to purchase — reach out before you order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641561829747,"sku":"CARRIE-PH1PPB036000ABAA-TRANSFORMER-HT01BD242","price":70.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641561862515,"sku":"CARRIE-PH1PPB036000ABAA-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_20a9cfb4-4909-418f-8da3-5fc74b06cee6.jpg?v=1782943229","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph1ppb036000abaa-transformer-h3025m","provider":"National HVAC Parts","version":"1.0","type":"link"}