{"product_id":"payne-pa3geaa36000aa-transformer-h2uxan","title":"OEM Payne Transformer 40VA 120V-24V for PA3GEAA36000AA","description":"\u003ch1\u003eOEM Payne Transformer 40VA 120V-24V for Model PA3GEAA36000AA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BC701\u003c\/strong\u003e) for the \u003cstrong\u003ePayne PA3GEAA36000AA\u003c\/strong\u003e packaged air conditioning unit. The transformer steps down 120V line voltage to the 24V signal voltage that powers your control board, thermostat, contactor coil, and all low-voltage control circuits. When the transformer fails, the entire control circuit goes dark — the thermostat becomes unresponsive, the system won't start, and you may measure zero volts at the 24V secondary terminals. It is one of the most commonly overlooked failure points when diagnosing a completely unresponsive HVAC system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | OEM part number HT01BC701 | Factory-matched output for Payne PA3GEAA36000AA control circuit requirements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and insulated to the exact VA rating and thermal tolerance required by the factory control board. Undersized or off-tolerance generic units can overload under peak demand, tripping the internal fuse and leaving your system down again within a season.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade terminals. Always photograph existing wiring before disconnecting. Test 24V output with a multimeter after installation before closing the unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. 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 Payne \u003cstrong\u003ePA3GEAA36000AA\u003c\/strong\u003e packaged unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate or wiring diagram before ordering. If you're unsure of fitment, our HVAC parts team is available to confirm compatibility before you buy — same-day shipping on all in-stock orders.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62908908306803,"sku":"PAYNE-PA3GEAA36000AA-TRANSFORMER-HT01BC701","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62908908339571,"sku":"PAYNE-PA3GEAA36000AA-TRANSFORMER-HT01BC701-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC701_5077c354-5c9c-4dc0-aaf9-cd5ef637525a.jpg?v=1780718836","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa3geaa36000aa-transformer-h2uxan","provider":"National HVAC Parts","version":"1.0","type":"link"}