{"product_id":"payne-pa1pnb030000aaaa-transformer-h30291","title":"OEM Payne Transformer 40VA 120V\/24V for PA1PNB030000AAAA","description":"\u003ch1\u003eOEM Payne Transformer 40VA 120V\/24V for Model PA1PNB030000AAAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part# \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) for the \u003cstrong\u003ePayne PA1PNB030000AAAA\u003c\/strong\u003e air handler. The transformer steps down 120V line voltage to the 24V AC signal that powers your thermostat, control board, and all low-voltage control circuit components. When the transformer fails, the entire control circuit goes dead — the thermostat loses power, the system won't respond to any call for heating or cooling, and in some cases you may detect a burning smell or a tripped low-voltage fuse. Replacing the transformer is one of the most straightforward HVAC repairs and restores full system operation immediately.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01BD209 | Factory-matched output tolerance for reliable control circuit performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound and rated to exact Payne factory specifications. Generic transformers may carry inconsistent VA ratings that starve the control board under load, causing erratic lockouts or premature component failure.\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, wire nuts or quick-connect terminals, multimeter to verify 24V output after installation. Always label wires before disconnecting. Total job time is typically 20–30 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as the direct OEM replacement for the Payne \u003cstrong\u003ePA1PNB030000AAAA\u003c\/strong\u003e air handler. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering to ensure a proper match. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — no guesswork required.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62908977086835,"sku":"PAYNE-PA1PNB030000AAAA-TRANSFORMER-HT01BD209","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62908977119603,"sku":"PAYNE-PA1PNB030000AAAA-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_93157070-0db1-4138-be91-0623ad4b675f.jpg?v=1780718904","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa1pnb030000aaaa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}