{"product_id":"carrier-pf4mna037000abaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 208\/230V for PF4MNA037000ABAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 208\/230V–24V for Model PF4MNA037000ABAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier PF4MNA037000ABAA\u003c\/strong\u003e air handler. The control transformer steps down 208\/230V line voltage to the 24V signal required by your thermostat, control board, and all low-voltage HVAC components. When this part fails, the entire control circuit goes dead — your thermostat will show a blank screen or no response, and the system will not heat, cool, or run the blower regardless of thermostat input. A failed transformer is often misdiagnosed as a bad thermostat or control board, making correct identification critical before replacing more expensive components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/230V Primary | 24V Secondary | 40VA Power Rating | Basler Electric Model BE28316007 | Factory-matched OEM tolerances\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and insulated to Carrier's exact VA and voltage specifications. Generic units with undersized VA ratings can overheat under peak load, trip internal breakers, or fail prematurely — risking collateral damage to your control board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Always photograph wiring before disconnecting leads. Standard wire-nut reconnection; no special tools required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. In-stock units ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for the \u003cstrong\u003eCarrier PF4MNA037000ABAA\u003c\/strong\u003e air handler. Also fits other Carrier, Bryant, and Payne equipment specifying HT01CN241 with a 208\/230V primary and 24V\/40VA secondary — always verify the part number on your unit's data plate or existing transformer label before ordering. Need help confirming fitment? Our HVAC parts team verifies compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62643297419635,"sku":"CARRIE-PF4MNA037000ABAA-TRANSFORMER-HT01CN241","price":108.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643297452403,"sku":"CARRIE-PF4MNA037000ABAA-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_7737887f-7515-43bb-a046-7bfcb375837a.jpg?v=1775041483","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pf4mna037000abaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}