{"product_id":"payne-pa1spa090000aaaa-transformer-h302a1","title":"OEM Payne Transformer 40VA 120V\/24V for PA1SPA090000AAAA","description":"\u003ch1\u003eOEM Payne 40VA Control Transformer HT01BD236 for Model PA1SPA090000AAAA\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-specified control transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) for the \u003cstrong\u003ePayne PA1SPA090000AAAA\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, contactor coil, and control board. When this component fails, the entire control circuit goes dead: your thermostat display may go blank, the system won't respond to any call for heating or cooling, and you may find a blown fuse on the control board. It is one of the first components to check when nothing in the system responds.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V AC | OEM part number HT01BD236 | Factory-matched for Payne PA1SPA090000AAAA air handler\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. Undersized or off-tolerance generic transformers can overheat under normal control circuit loads, blow fuses repeatedly, or damage the control board — costing far more in secondary repairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Note wire colors and terminal labels before disconnecting. Confirm 24V output with a multimeter after installation before restoring the system.\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 PA1SPA090000AAAA air handler. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering. If you're unsure of fitment, our HVAC parts specialists can confirm compatibility before you buy — same-day shipping on all in-stock orders.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62908942451059,"sku":"PAYNE-PA1SPA090000AAAA-TRANSFORMER-HT01BD236","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62908942483827,"sku":"PAYNE-PA1SPA090000AAAA-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_ddfa8154-9d6a-4fe4-a7bd-40bf9670c70a.jpg?v=1780718911","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa1spa090000aaaa-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}