{"product_id":"carrier-transformer-gb1aav048091adja","title":"OEM Carrier Transformer HT01BL248 for Model GB1AAV048091ADJA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer HT01BL248 for Model GB1AAV048091ADJA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier transformer (HT01BL248) supplies the low-voltage 24V control power your GB1AAV048091ADJA gas furnace needs to operate the thermostat, control board, gas valve, and relays. When the transformer fails, the furnace goes completely dead — no display, no blower, no response from the thermostat — even though line voltage is present. Replacing it restores the 24VAC secondary output to factory specification. This direct-fit part matches the original primary\/secondary voltage and VA rating for the GB1AAV048091ADJA, ensuring stable control operation. Installation is a moderate DIY task: shut off power, photograph and label the primary and secondary leads, remove the mounting screws, and wire in the new transformer. Most repairs take 20 to 30 minutes with basic tools and a multimeter to confirm output. Choosing genuine OEM guarantees correct fit and reliable long-term performance. In stock and ships same-day on orders placed before 3PM CST, so your heating system is back online without the wait.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model GB1AAV048091ADJA.\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":62942785110387,"sku":"carrier-transformer-gb1aav048091adja","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_e0b4446b-e450-47be-9cf8-98f83e11e86f.jpg?v=1781473979","url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-gb1aav048091adja","provider":"National HVAC Parts","version":"1.0","type":"link"}