{"product_id":"payne-pa1hpa090000aaaa-transformer-h302a1","title":"OEM Payne Transformer 40VA 120V\/24V for PA1HPA090000AAAA","description":"\u003ch1\u003eOEM Payne 40VA Control Transformer for Model PA1HPA090000AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer is the factory-specified replacement for the \u003cstrong\u003ePayne PA1HPA090000AAAA\u003c\/strong\u003e heat pump system. The transformer converts 120V line voltage to 24V AC to power the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When it fails, nothing in the system responds: the thermostat goes blank, the unit won't energize, and no heating or cooling function is possible. It is one of the first components to check in a complete system no-response diagnosis.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01BD236 | Factory-matched output for stable control circuit voltage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to exact factory VA and voltage specifications. Generic substitutes often deliver inconsistent secondary voltage, which can cause nuisance lockouts, contactor chatter, or premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire strippers, multimeter. Verify 24V output after installation before restoring system power. Photograph all wiring connections prior to removal.\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 Engineered specifically for the Payne \u003cstrong\u003ePA1HPA090000AAAA\u003c\/strong\u003e heat pump system. Confirm your unit's data plate shows 120V primary control voltage before ordering. OEM part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e ensures a direct plug-in replacement with no modifications required. Need fitment verification? Our HVAC parts specialists confirm compatibility before you buy — order with confidence.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62909002416499,"sku":"PAYNE-PA1HPA090000AAAA-TRANSFORMER-HT01BD236","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909002449267,"sku":"PAYNE-PA1HPA090000AAAA-TRANSFORMER-HT01BD236-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BD236_b279a814-c77c-4d43-b48f-ad7d77a342a0.jpg?v=1780718898","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa1hpa090000aaaa-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}