{"product_id":"payne-pa3gna036000aa-transformer-h30291","title":"OEM Payne Transformer 40VA 120V\/24V for PA3GNA036000AA","description":"\u003ch1\u003eOEM Payne 40VA Control Transformer HT01BD209 for Model PA3GNA036000AA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003ePayne PA3GNA036000AA\u003c\/strong\u003e packaged air conditioner. The transformer steps down 120V line voltage to the 24V signal required to power your thermostat, contactor coil, and all low-voltage control circuits. When this component fails, the entire control system goes dark — nothing responds, including the thermostat — making it one of the first components to check during a no-response diagnostic.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | Class 2 transformer | Direct OEM replacement for part number HT01BD209\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This factory OEM unit is wound to exact VA and voltage tolerances, protecting sensitive control boards from voltage fluctuations. Generic transformers can deliver inconsistent output voltage, risking damage to downstream electronics and voiding related warranties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Verify 24V output at secondary terminals after install before restoring full power. Photograph existing wiring connections prior to removal.\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 for the Payne \u003cstrong\u003ePA3GNA036000AA\u003c\/strong\u003e packaged unit (3-ton). Confirm your existing transformer's VA rating and primary\/secondary voltages on the unit's data plate or wiring diagram before ordering. Our fitment team is available to verify compatibility — just reach out before you buy. Order today and ship same day.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62908907127155,"sku":"PAYNE-PA3GNA036000AA-TRANSFORMER-HT01BD209","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62908907159923,"sku":"PAYNE-PA3GNA036000AA-TRANSFORMER-HT01BD209-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BD209_0172b6aa-8d30-4593-89a3-330c89c3cad2.jpg?v=1780718952","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa3gna036000aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}