{"product_id":"carrier-ph3ppa036000aa-transformer-h3025m","title":"OEM Carrier Transformer for PH3PPA036000AA Heat Pump 24V Control","description":"\u003cdiv class=\"product-content\"\u003e\n\u003ch1\u003eOEM Carrier Transformer for PH3PPA036000AA Heat Pump 24V Control\u003c\/h1\u003e\n\u003cp\u003eThe control transformer steps the incoming line voltage down to the low-voltage 24VAC that powers the entire control circuit of your Carrier PH3PPA036000AA — the thermostat, contactor coil, defrost board, and reversing valve solenoid all depend on it. When a transformer fails, the high-voltage side may still hum along while nothing on the control side works: a blank thermostat, an outdoor unit that won't respond to a call, no contactor pull-in, and no cooling or heating at all. A transformer that buzzes loudly, runs hot to the touch, or has a burnt smell is failing — and a repeatedly blown low-voltage fuse usually points to a shorted secondary or a downstream wiring fault that took the transformer with it.\n\nSpecs: Carrier OEM transformers for this platform are typically 40 VA units with a line-voltage primary (commonly 208\/230 VAC, sometimes multi-tap) and a 24VAC secondary. Verify your primary voltage tap and the VA rating before installing — an undersized VA transformer will overheat trying to drive the contactor and reversing-valve coils together.\n\nOEM vs Generic: Transformers are about thermal margin and clean voltage. Generic units often wind fewer turns on lighter-gauge magnet wire and skimp on the VA rating, so they sag under load, run hot, and drop out the contactor coil intermittently — causing maddening no-start faults. OEM windings hold 24V steady under the full control load this unit draws.\n\nInstall — Difficulty 2\/5: You'll need a 1\/4\" nut driver, an insulated screwdriver, a multimeter, and a wiring photo. #1 SAFETY: kill the disconnect and breaker — the primary side carries full line voltage, and the low-voltage fuse must be checked before re-energizing.\n\nShips same business day from our stocked warehouse on orders placed before 3 PM CST. Backed by a 1-year OEM warranty and 30-day hassle-free returns on uninstalled parts.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model PH3PPA036000AA. Always verify the part number against your unit's data plate before ordering.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose OEM?\u003c\/h2\u003e\n\u003cp\u003eOEM parts are manufactured to the exact factory specifications for your unit. Generic aftermarket alternatives may fit physically but often use lower-rated components that reduce equipment life and void manufacturer warranties. When the cost difference between OEM and generic is $10-30, the OEM part is always the smarter investment on a system worth $5,000-$15,000.\u003c\/p\u003e\n\u003ch2\u003eShipping \u0026amp; Returns\u003c\/h2\u003e\n\u003cp\u003eSame-day shipping on orders before 3 PM CST. Standard delivery 2-5 business days, express options available at checkout. 30-day hassle-free returns on uninstalled parts — free return shipping included. 1-year OEM factory warranty coverage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641345134963,"sku":"CARRIE-PH3PPA036000AA-TRANSFORMER-HT01BD242","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641345167731,"sku":"CARRIE-PH3PPA036000AA-TRANSFORMER-HT01BD242-GEN","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-HT01BD242_9e240611-65b8-4bd0-9a79-49aa6b7395a7.jpg?v=1782943958","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph3ppa036000aa-transformer-h3025m","provider":"National HVAC Parts","version":"1.0","type":"link"}