{"product_id":"carrier-ga1aad048100aaja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120\/24V for GA1AAD048100AAJA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BC116 for Model GA1AAD048100AAJA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier GA1AAD048100AAJA\u003c\/strong\u003e packaged unit. The transformer steps down line voltage (120V) to the 24V AC signal that powers your thermostat, control board, and all low-voltage switching circuits. When this component fails, absolutely nothing responds — the thermostat goes dark, the contactor won't pull in, and the system is completely unresponsive. A blown transformer is also a common downstream symptom of a shorted wire or failed component in the 24V circuit, so inspect thoroughly before replacing.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary input | 24V secondary output | Direct OEM replacement for part number HT01BC116 | Factory-matched electrical tolerances\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM Carrier transformers are wound and insulated to exact VA and thermal ratings. Generic transformers frequently use thinner gauge windings that overheat under sustained load, leading to repeat failures and potential control board damage.\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, wire stripper, multimeter. Always verify 24V output with a multimeter after installation before restoring full power. Check 24V circuit for shorts first to avoid burning 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 Designed for the Carrier \u003cstrong\u003eGA1AAD048100AAJA\u003c\/strong\u003e packaged unit. Verify your existing transformer's VA rating and voltage markings against your unit's data plate before ordering. If you're unsure of fitment, our HVAC parts specialists can confirm compatibility before you buy — ships same day.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909450846579,"sku":"CARRIE-GA1AAD048100AAJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909450879347,"sku":"CARRIE-GA1AAD048100AAJA-TRANSFORMER-HT01BC116-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-HT01BC116_b8c6264f-d6cf-4546-8eea-2ef0fcddd18c.jpg?v=1782938691","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ga1aad048100aaja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}