{"product_id":"carrier-pg9mab048080acsa-transformer-h2usbz","title":"OEM Carrier 40VA Furnace Control Transformer for PG9MAB048080ACSA","description":"\u003cdiv class=\"product-content\"\u003e\n\u003ch1\u003eOEM Carrier 40VA Furnace Control Transformer for PG9MAB048080ACSA\u003c\/h1\u003e\n\u003cp\u003eThe control transformer steps your home's 120V line voltage down to the 24V low-voltage power that runs the thermostat, control board, gas valve, and safety switches on your Carrier PG9MAB048080ACSA furnace. It is the single power source for the entire low-voltage control circuit. When the transformer fails — usually from an overheated winding or a shorted thermostat wire that blew it — the furnace goes completely dead: no thermostat display, no inducer, no response to a heat call at all. A failing transformer can also produce weak, dropping 24V that makes the gas valve chatter or the board reset mid-cycle.\n\nThis genuine Carrier OEM transformer is rated 40VA with a 120V primary and a 24V secondary, the correct VA capacity to drive this furnace's two-stage board plus accessories without sagging under load. It uses the factory mounting bracket footprint and the correct primary\/secondary lead colors and lengths for a clean drop-in.\n\nGeneric transformers are often under-rated below 40VA or wound with thinner magnet wire, so they run hot, droop under inrush, and fail early — and an undersized secondary can leave the gas valve coil under-energized, causing it to drop out mid-burn. OEM gives you the full rated VA and a sealed Class-2 secondary matched to the furnace's load.\n\nInstall difficulty: 2 of 5. Tools: 1\/4\" nut driver, multimeter, and wire nuts or the factory quick-connects. #1 safety warning: shut off the furnace breaker before touching the primary leads — the 120V primary side is lethal. Before replacing, check for a shorted thermostat wire that may have killed the original.\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 PG9MAB048080ACSA. 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":62642158272883,"sku":"CARRIE-PG9MAB048080ACSA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642158305651,"sku":"CARRIE-PG9MAB048080ACSA-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_248b2b67-39d0-4231-85aa-f4a985aa6362.jpg?v=1782899570","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg9mab048080acsa-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}