{"product_id":"carrier-pg8uaa024065aaja-transformer-h2usbz","title":"OEM Carrier Transformer Replacement for Furnace PG8UAA024065AAJA","description":"\u003cdiv class=\"product-content\"\u003e\n\u003ch1\u003eOEM Carrier Transformer Replacement for Furnace PG8UAA024065AAJA\u003c\/h1\u003e\n\u003cp\u003eThe control transformer is the power supply for everything 'low-voltage' in your system. It steps line voltage (120V) down to the 24V that runs your thermostat, control board relays, gas valve, and contactor coil. When it fails — usually an open winding or a short caused by a stuck contactor or pinched wire — the entire control circuit goes dead. Homeowners notice a blank thermostat, a system that won't respond to any call, and neither heating nor cooling, even though the breaker is on and line power is present.\n\nThis is a Class 2 control transformer with a 120V primary and a 24V secondary rated at 40VA, matching the load and mounting footprint of the PG8UAA furnace control assembly. The VA rating determines how much current it can supply to the gas valve, board, and accessories without overheating.\n\nOEM matters because an undersized or loosely-toleranced generic transformer sags under load — the 24V can drop enough to drop out relays and the gas valve intermittently, causing maddening intermittent no-heat faults. A correctly rated OEM unit holds voltage steady and runs cooler, which directly extends its life.\n\nInstall difficulty: 2-3 of 5. Tools: 1\/4\" nut driver, multimeter (to confirm 24V output and check for a shorted secondary), and wire nuts. #1 safety warning: this part is on the LINE-VOLTAGE side — kill power at the breaker, not just the thermostat, before touching the primary leads. Before installing the new transformer, find what killed the old one (a shorted gas valve, board, or pinched harness) or you'll burn out the replacement too.\n\nShips same business day from our stocked warehouse on orders placed before 3 PM CST. Backed by a 1-year OEM warranty and 30-day hassle-free returns on uninstalled parts.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model PG8UAA024065AAJA. Always verify the part number against your unit's data plate before ordering.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose OEM?\u003c\/h2\u003e\n\u003cp\u003eOEM parts are manufactured to the exact factory specifications for your unit. Generic aftermarket alternatives may fit physically but often use lower-rated components that reduce equipment life and void manufacturer warranties. When the cost difference between OEM and generic is $10-30, the OEM part is always the smarter investment on a system worth $5,000-$15,000.\u003c\/p\u003e\n\u003ch2\u003eShipping \u0026amp; Returns\u003c\/h2\u003e\n\u003cp\u003eSame-day shipping on orders before 3 PM CST. Standard delivery 2-5 business days, express options available at checkout. 30-day hassle-free returns on uninstalled parts — free return shipping included. 1-year OEM factory warranty coverage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62642839617907,"sku":"CARRIE-PG8UAA024065AAJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642839650675,"sku":"CARRIE-PG8UAA024065AAJA-TRANSFORMER-HT01BC116-GEN","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-HT01BC116_37d26b3e-2924-41b4-91c3-afde10362219.jpg?v=1782944218","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg8uaa024065aaja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}