{"product_id":"carrier-pf4mnb049t00abaa-transformer-h3hwwy","title":"OEM Carrier Transformer 208\/230V–24V 40VA for PF4MNB049T00ABAA","description":"\u003ch1\u003eOEM Carrier Control Transformer 208\/230V to 24V 40VA for Model PF4MNB049T00ABAA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PF4MNB049T00ABAA\u003c\/strong\u003e air handler. The transformer steps down 208\/230V line voltage to 24V AC, powering the entire low-voltage control circuit — including the thermostat, contactor coils, and control board. When this part fails, the result is a completely unresponsive system: the thermostat goes blank, the unit refuses to start, or the system blows a low-voltage fuse repeatedly. Replacing the transformer is typically the first diagnostic step when 24V is absent at the control board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/230V Primary | 24V Secondary | 40VA rated | Direct OEM drop-in replacement for Carrier part HT01CN241\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier transformer built to exact factory VA and voltage specifications. Generic transformers often run off-spec VA ratings, causing erratic thermostat behavior, nuisance fuse failures, or premature control board damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Note all wire terminal labels before disconnecting. Confirm 24V output after installation before restoring full system power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Confirmed OEM fit for Carrier model \u003cstrong\u003ePF4MNB049T00ABAA\u003c\/strong\u003e air handler. Always verify your unit's data plate voltage rating matches the 208\/230V primary input before ordering. Our fitment team is available to confirm compatibility before you purchase — order with confidence from NationalHVACParts.com.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62643256820083,"sku":"CARRIE-PF4MNB049T00ABAA-TRANSFORMER-HT01CN241","price":108.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643256852851,"sku":"CARRIE-PF4MNB049T00ABAA-TRANSFORMER-HT01CN241-GEN","price":95.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01CN241_4a3bea75-59b3-4f79-b6a8-ada565f65af1.jpg?v=1775041190","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pf4mnb049t00abaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}