{"product_id":"carrier-transformer-fb4cnf036010acaa","title":"OEM Carrier Transformer for Model FB4CNF036010ACAA Air Handler","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer for Model FB4CNF036010ACAA Air Handler\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier transformer is the authentic factory replacement for the FB4CNF036010ACAA fan coil air handler. Its job is to step down high line voltage to the 24V control voltage needed to run the thermostat, contactor coil, and the rest of the low-voltage control circuit. A burned-out or shorted transformer will leave the unit completely unresponsive on the control side, making it a frequent first suspect during a no-cool or no-heat service call. This replacement matches the original Carrier specification exactly — same VA output, same secondary leads, and the same mounting footprint — so it fits the FB4CNF036010ACAA without adapters or rewiring. Installation difficulty is moderate: shut off power, label and transfer the wiring, mount the transformer, and reconnect, then meter the secondary to confirm 24V. Using genuine OEM hardware protects the control board from voltage mismatch and preserves system reliability. This transformer is in stock and ships same-day when your order is placed before 3PM CST, minimizing system downtime.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FB4CNF036010ACAA.\u003c\/p\u003e\n\u003ch2\u003eShipping\u003c\/h2\u003e\n\u003cp\u003eSame-day shipping before 3 PM CST. 30-day returns on uninstalled parts.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carrier","offers":[{"title":"Default Title","offer_id":62950595166579,"sku":"carrier-transformer-fb4cnf036010acaa","price":49.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fb4cnf036010acaa","provider":"National HVAC Parts","version":"1.0","type":"link"}