{"product_id":"carrier-pf1mnb018005aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 208\/230V–24V for PF1MNB018005AAAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01CN241 for Model PF1MNB018005AAAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement control transformer for the \u003cstrong\u003eCarrier PF1MNB018005AAAA\u003c\/strong\u003e fan coil and air handler unit. The transformer steps down 208\/230V line voltage to the 24V signal required to power your system's entire control circuit — including the thermostat, contactor coil, and safety switches. When this transformer fails, the result is total control loss: the thermostat goes dark, the system refuses to respond to any call for heating or cooling, and no components energize. Replacing this part restores the low-voltage backbone of the entire system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/230V Primary | 24V Secondary | 40VA rated | OEM Part # HT01CN241 | Direct factory drop-in replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM transformer wound to exact factory VA and voltage tolerances. Generic alternatives may run under-rated VA loads, causing premature thermal cutout trips and erratic system behavior under peak demand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, needle-nose pliers. Always photograph existing wiring before disconnecting. Verify 24V output with a multimeter after install before restoring full power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer's warranty. Ships same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM replacement for the Carrier \u003cstrong\u003ePF1MNB018005AAAA\u003c\/strong\u003e fan coil\/air handler. Confirm your existing transformer's primary voltage (208V or 230V) and VA rating on the unit's data plate before ordering. Our parts specialists are available to verify fitment — contact us before you order for complete peace of mind. \u003cstrong\u003eOrder now and ship today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62643346243955,"sku":"CARRIE-PF1MNB018005AAAA-TRANSFORMER-HT01CN241","price":108.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643346276723,"sku":"CARRIE-PF1MNB018005AAAA-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_a995e9c3-85ed-46e9-8863-d4a0b6d78330.jpg?v=1775041496","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pf1mnb018005aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}