{"product_id":"payne-pa1hea090000aaaa-transformer-h302a1","title":"OEM Payne Transformer 40VA 120V\/24V for PA1HEA090000AAAA","description":"\u003ch1\u003eOEM Payne Control Transformer 40VA for Model PA1HEA090000AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003ePayne PA1HEA090000AAAA\u003c\/strong\u003e air handler. The transformer steps down line voltage from 120V to 24V AC to power the low-voltage control circuit — including the thermostat, control board, and all switching relays. When this transformer fails, the entire control circuit goes dark: your thermostat loses power, the system won't respond to any commands, and no heating or cooling operation is possible. A failed transformer is often mistaken for a control board failure, so always check transformer output voltage first before replacing more expensive components.\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 tolerance for stable control voltage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to Payne's exact VA and voltage specifications. Generic transformers frequently run at lower VA ratings or unstable output voltage, which can damage sensitive control boards and void equipment warranties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or terminal connectors. Photograph all wiring connections before disconnecting. Verify 24V output with a multimeter after installation before restoring full power.\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 specifically for the Payne \u003cstrong\u003ePA1HEA090000AAAA\u003c\/strong\u003e air handler. Confirm your existing transformer's VA rating and primary\/secondary voltages on the unit's data plate or wiring diagram before ordering. Need help verifying fitment? Our HVAC parts specialists confirm compatibility before every order — no guesswork required.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62909012541811,"sku":"PAYNE-PA1HEA090000AAAA-TRANSFORMER-HT01BD236","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909012574579,"sku":"PAYNE-PA1HEA090000AAAA-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_dbc457c5-2619-4298-a3c0-d6921c2c76f9.jpg?v=1780718897","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa1hea090000aaaa-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}