Description
The Rheem-Ruud AS-90645-13 is a genuine OEM stainless steel heat exchanger engineered as a direct replacement for compatible Rheem and Ruud heating systems. Built from stainless steel construction, this heat exchanger offers superior resistance to corrosion, cracking, and thermal fatigue — making it an ideal long-term solution for maintaining safe and efficient furnace operation.
Why Choose the Rheem-Ruud AS-90645-13?
The heat exchanger is the heart of any forced-air furnace, separating combustion gases from the conditioned air circulated throughout the home. A cracked or degraded heat exchanger can allow carbon monoxide and other combustion byproducts to enter the living space, creating a serious safety hazard. Replacing it with a genuine Rheem-Ruud OEM part ensures a precise fit, proper sealing, and restored system performance.
Key Features
- Genuine Rheem-Ruud OEM replacement heat exchanger
- Stainless steel construction for enhanced durability and corrosion resistance
- Engineered for precise fit in compatible Rheem and Ruud furnace models
- Helps restore safe combustion gas separation and heating efficiency
- Designed to withstand repeated thermal cycling and high-temperature operation
Application
This heat exchanger is intended for use in compatible Rheem and Ruud residential and light commercial forced-air furnaces. Always verify compatibility with your specific unit model number before installation. Installation should be performed by a qualified HVAC technician in accordance with local codes and the manufacturer’s guidelines.







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