{"product_id":"carrier-pf1mnc018000aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 208\/230V–24V for PF1MNC018000AAAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01CN241 for Model PF1MNC018000AAAA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier control transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e), the factory-specified replacement for the \u003cstrong\u003eCarrier PF1MNC018000AAAA\u003c\/strong\u003e air handler. The transformer steps down line voltage (208\/230V primary) to 24V on the secondary side, powering the low-voltage control circuit that operates your thermostat, contactor coils, and all system controls. When this transformer fails, the entire control circuit goes dead — symptoms include a completely unresponsive thermostat, no call-for-heat or cool, tripped circuit breakers on the low-voltage side, or a burned smell near the air handler cabinet.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/230V Primary | 24V Secondary | 40VA rated | OEM part number HT01CN241 | Factory Authorized Parts™ specification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e Genuine Carrier OEM transformers are wound to exact VA and voltage tolerances, protecting downstream components like the control board and contactor coils. Undersized or off-tolerance aftermarket transformers are a leading cause of repeat control board failures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all low-voltage wire connections before removal. Verify 24V output at secondary terminals before reassembly.\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 when ordered by cutoff time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003ePF1MNC018000AAAA\u003c\/strong\u003e air handler. Verify your unit's data plate shows a 208\/230V primary and 24V secondary 40VA transformer requirement before ordering. Our fitment team is available to confirm compatibility — just reach out before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62643341787507,"sku":"CARRIE-PF1MNC018000AAAA-TRANSFORMER-HT01CN241","price":108.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643341820275,"sku":"CARRIE-PF1MNC018000AAAA-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_2cc0b3d0-9f7d-466e-9e51-67d6d7e9c60d.jpg?v=1775041507","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pf1mnc018000aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}