Rheem-Ruud AS-104120-21 Heat Exchanger Assembly

The Rheem-Ruud AS-104120-21 is an OEM heat exchanger assembly designed for select Rheem and Ruud residential gas furnaces. This genuine replacement component is engineered to restore proper heat transfer and furnace operation when the original heat exchanger fails or becomes compromised.

Key Features:

• Genuine Rheem-Ruud OEM replacement part for reliable fit and performance
• Manufactured to exact factory specifications for seamless integration
• Designed for efficient heat transfer from combustion gases to circulating air
• Critical component for safe furnace operation and carbon monoxide prevention
• Direct replacement for worn or cracked heat exchanger assemblies

Heat exchanger replacement requires technical expertise and should be performed by a qualified HVAC technician. Proper installation is essential for safe furnace operation and warranty compliance. Verify part number compatibility with your specific furnace model before ordering.