{"product_id":"carrier-pg9maa036080adka-transformer-h2usbz","title":"OEM Carrier 24V Control 40VA Transformer Replacement for PG9MAA036080ADKA","description":"\u003cdiv class=\"product-content\"\u003e\n\u003ch1\u003eOEM Carrier 24V Control Transformer Replacement for PG9MAA036080ADKA\u003c\/h1\u003e\n\u003cp\u003eThe control transformer in your Carrier PG9MAA036080ADKA furnace steps line voltage down to the 24-volt control signal that powers the thermostat, gas valve, relays, and safety circuits. When it fails, the entire low-voltage side goes dark: the thermostat screen is blank, the furnace won't respond to a call for heat, and nothing clicks on even though the unit has line power. A shorted transformer often blows the board fuse repeatedly or emits a burnt-electrical smell.\n\nThis genuine OEM transformer is matched to the furnace's factory ratings — typically a 24V secondary at 40 VA with a 115\/208\/230V primary. Confirm the primary voltage and VA rating stamped on your old transformer before ordering, since under-sizing the VA starves the gas valve and relays during simultaneous loads.\n\nWhy OEM matters here: aftermarket transformers frequently use thinner windings and undersized cores that run hotter and sag under load, dropping secondary voltage below the ~24V the gas valve needs to hold open. Marginal voltage causes intermittent no-heat faults that are maddening to diagnose. A genuine OEM transformer delivers stable, full-rated 24V across the heating cycle.\n\nInstall difficulty: 2\/5. Tools: 1\/4\" nut driver, wire strippers\/connectors, and a multimeter to confirm zero output on the failed unit and 24V on the replacement. #1 SAFETY WARNING: line voltage is present on the primary side — turn off the breaker to the furnace before disconnecting any wiring, and verify the primary leads are dead with your meter before touching them. Label the low-voltage wires before removal.\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 PG9MAA036080ADKA. 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":62642369659251,"sku":"CARRIE-PG9MAA036080ADKA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642369692019,"sku":"CARRIE-PG9MAA036080ADKA-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_a6da5085-0bd9-4de0-ab82-cce64f305c18.jpg?v=1782898128","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg9maa036080adka-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}