{"product_id":"carrier-c50a202062-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A202062","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA for Model C50A202062\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier C50A202062\u003c\/strong\u003e commercial rooftop unit. The transformer steps down 120V line voltage to 24V to power the entire low-voltage control circuit — including the thermostat, contactors, gas valve, and control board. When it fails, nothing in the system responds: the thermostat goes dark, no relays click, and the unit is completely inoperative. It is often the first component to check when a system shows zero control activity.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | OEM part numbers HT01BD236 and HT01BD702 | Factory-matched construction for direct drop-in replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and rated to exact factory specifications, ensuring consistent 24V output under full control circuit load. Generic units frequently undervolt under load, causing intermittent lockouts and nuisance tripping that is difficult to diagnose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph all wiring connections before removing the old transformer. Installation typically takes 20–30 minutes.\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 Designed for the Carrier \u003cstrong\u003eC50A202062\u003c\/strong\u003e commercial packaged rooftop unit. Verify primary voltage (120V) and VA rating on your unit's data plate before ordering. This part replaces OEM numbers HT01BD236 and HT01BD702 — both are covered by this listing. Have questions about fitment? Our HVAC parts specialists verify compatibility before you order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909718266227,"sku":"CARRIE-C50A202062-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909718298995,"sku":"CARRIE-C50A202062-TRANSFORMER-HT01BD236-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-HT01BD236_c29e77a3-72d1-4f7a-ab09-fd0c3ad25094.jpg?v=1782940323","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a202062-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}