{"product_id":"carrier-subclr50hj440476-transformer-h30291","title":"OEM Carrier Transformer 40VA 208\/240V–24V for SUBCLR50HJ440476","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/240V–24V for Model SUBCLR50HJ440476\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part # HT01BD209) is the factory-specified replacement for the \u003cstrong\u003eCarrier SUBCLR50HJ440476\u003c\/strong\u003e. The transformer steps down line voltage from 208\/240V primary to a stable 24V secondary output, powering the low-voltage control circuit that governs your thermostat, control board, contactor coil, and safety switches. When this part fails, the entire control circuit goes dark — symptoms include a completely unresponsive thermostat, no contactor pull-in, or a system that won't start under any call for heating or cooling.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 208\/240V primary input | 24V secondary output | 50\/60 Hz | OEM part # HT01BD209 | Replaces HT01BD207, HT01CN232, and 9076-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM Carrier transformers are wound to precise VA and voltage tolerances, protecting sensitive control boards from voltage sag or spike. Aftermarket units with loose tolerances can cause erratic board behavior or premature board failure — making OEM the safer long-term investment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output post-install). Label all low-voltage wires before disconnecting. Swap wire for wire to the same terminals on the new transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory 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 Engineered as a direct OEM replacement for \u003cstrong\u003eCarrier model SUBCLR50HJ440476\u003c\/strong\u003e. Also cross-references to HT01BD207, HT01CN232, and 9076-00 for broader Carrier, Bryant, and Payne equipment compatibility. Always verify your unit's data plate voltage specifications before ordering. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you order — reach out today and we'll ship the same business day.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640288530803,"sku":"CARRIE-SUBCLR50HJ440476-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640288563571,"sku":"CARRIE-SUBCLR50HJ440476-TRANSFORMER-HT01BD209-GEN","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-HT01BD209_cb228486-71ce-4653-9483-8688a4fb616d.jpg?v=1782942456","url":"https:\/\/nationalhvacparts.com\/products\/carrier-subclr50hj440476-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}