{"product_id":"carrier-gb1aav036111adja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 24V for GB1AAV036111ADJA — HT01BC116","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA for Model GB1AAV036111ADJA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier GB1AAV036111ADJA\u003c\/strong\u003e packaged or split-system unit. The transformer steps down 120V line voltage to the 24V signal voltage required to power your thermostat, control board, and all low-voltage system controls. When the transformer fails, the entire control circuit goes dead — the thermostat goes blank, the system won't respond to any call for heating or cooling, and no low-voltage components will operate. It is often the first component to check when a unit appears completely unresponsive despite confirmed line voltage at the disconnect.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA output rating | Primary: 120V AC | Secondary: 24V AC | Replaces OEM part number HT01BC116 | Factory-matched construction for long service life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier transformer wound to factory specifications. Generic transformers frequently use thinner gauge wire and lower-grade core laminations, making them prone to overheating and premature burnout — especially in high-demand multi-stage systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit at the disconnect and breaker before beginning work. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, wire nuts or spade terminals. Photograph all low-voltage wiring connections before disconnecting the old transformer. Verify correct VA rating before energizing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed and verified for the Carrier \u003cstrong\u003eGB1AAV036111ADJA\u003c\/strong\u003e. Always confirm the primary voltage, secondary voltage, and VA rating on your unit's data plate before ordering. Our parts team is available to verify fitment — reach out before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909425680755,"sku":"CARRIE-GB1AAV036111ADJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909425713523,"sku":"CARRIE-GB1AAV036111ADJA-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_63e63bf9-6fcb-4c91-8ce5-efceb3d6ba0c.jpg?v=1782942596","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb1aav036111adja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}