{"product_id":"payne-pa4gexa36000aa-transformer-h2uxan","title":"OEM Payne Transformer 40VA 120V\/24V for PA4GEXA36000AA","description":"\u003ch1\u003eOEM Payne 40VA Control Transformer for Model PA4GEXA36000AA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part #HT01BC701) is the factory-specified replacement for the \u003cstrong\u003ePayne PA4GEXA36000AA\u003c\/strong\u003e air conditioner. The transformer steps down 120V line voltage to 24V to power the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this transformer fails, absolutely nothing will respond: no cooling, no fan, no thermostat communication. A failed transformer is often the first suspect when the system appears completely dead with no error codes.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | OEM part number HT01BC701 | Factory-matched output for Payne control circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances required by Payne's control board. Undersized or off-spec generic units can cause erratic thermostat behavior, contactor chatter, or premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Use the multimeter to verify 24V output after installation before closing the panel. Always photograph existing wiring before disconnecting terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty included. 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 as a direct OEM replacement for the Payne PA4GEXA36000AA split-system air conditioner. Verify your existing transformer's VA rating and primary\/secondary voltages on the data plate before ordering. Our parts specialists are available to confirm fitment — just reach out before you buy. Order today for same-day shipping.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62908863250803,"sku":"PAYNE-PA4GEXA36000AA-TRANSFORMER-HT01BC701","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62908863283571,"sku":"PAYNE-PA4GEXA36000AA-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_de6b321f-e6cc-4d7f-8eaa-f6f9840a5370.jpg?v=1780719014","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa4gexa36000aa-transformer-h2uxan","provider":"National HVAC Parts","version":"1.0","type":"link"}