{"product_id":"carrier-pg8uaa024045acja-transformer-h2usbz","title":"OEM Carrier 24V 40VA Transformer for PG8UAA024045ACJA Gas Furnace","description":"\u003cdiv class=\"product-content\"\u003e\n\u003ch1\u003eOEM Carrier 24V Transformer for PG8UAA024045ACJA Gas Furnace\u003c\/h1\u003e\n\u003cp\u003eThe transformer in your Carrier PG8UAA024045ACJA steps the incoming 120V line voltage down to the low-voltage 24V control signal that powers the thermostat, gas valve, control board relays, and inducer circuit. Without it, none of the furnace's safety and sequencing logic can energize. When a transformer fails or its internal winding opens, the furnace goes completely dead — the thermostat screen may blank out, the blower and igniter never start, and you get no heat at all even though line power is present. A shorted transformer will often trip the inline fuse on the control board the moment power is restored.\n\nThis is a genuine OEM Class 2 transformer rated 120V primary \/ 24V secondary, typically 40VA, with the correct primary and secondary lead colors and mounting footprint Carrier specifies for this furnace. The VA rating is matched to the combined coil load of the gas valve, inducer relay, and board so the secondary voltage holds steady under full draw.\n\nGeneric transformers frequently undersize the VA capacity or use thinner secondary windings, causing voltage sag under load that drops out the gas valve mid-cycle and produces intermittent no-heat faults that are maddening to diagnose. The correct OEM unit holds 24V cleanly across the full control load.\n\nInstall difficulty: 2 of 5. Tools: 1\/4\" nut driver, multimeter, and wire labels. SAFETY: kill the furnace breaker before touching any wiring — the primary side carries lethal 120V line voltage. Verify 24V across the secondary leads with your meter before reassembly.\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 PG8UAA024045ACJA. 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":62642848858483,"sku":"CARRIE-PG8UAA024045ACJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642848891251,"sku":"CARRIE-PG8UAA024045ACJA-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_5569f553-394c-432d-8fb5-e1cd53f5cd5e.jpg?v=1782897997","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg8uaa024045acja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}