{"product_id":"carrier-transformer-gb1aav048091acja","title":"OEM Carrier Transformer HT01BL248 for Model GB1AAV048091ACJA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer HT01BL248 for Model GB1AAV048091ACJA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier transformer (HT01BL248) provides the 24V low-voltage control power that runs the thermostat, control board, gas valve, and relays in your GB1AAV048091ACJA gas furnace. A failed transformer leaves the furnace completely unresponsive — no display, no blower, and no reaction from the thermostat — even with full line voltage present. Replacing it restores the proper 24VAC secondary output and brings the control circuit back to life. This direct-fit part matches the original primary and secondary voltage and VA rating for the GB1AAV048091ACJA. Installation is a moderate DIY task: disconnect power, label and photograph the primary and secondary leads, remove the mounting screws, and wire in the replacement. Most repairs take 20 to 30 minutes with basic tools and a multimeter to verify output. Genuine OEM guarantees correct fit and dependable long-term performance over generic substitutes. In stock and ships same-day on orders placed before 3PM CST, so your heating system is powered back up without the wait.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model GB1AAV048091ACJA.\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":62942785306995,"sku":"carrier-transformer-gb1aav048091acja","price":34.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-carrier-transformer-gb_bd0f333f-0b45-47c1-b1c7-31925e67dbb0.jpg?v=1781473977","url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-gb1aav048091acja","provider":"National HVAC Parts","version":"1.0","type":"link"}