Rheem Heat Exchanger Assemblies

Overview

The RHEEM as-108840-19 is a stainless steel heat exchanger assembly designed for use in residential and commercial heating systems. The heat exchanger is the core component responsible for transferring combustion heat to the air supply while keeping flue gases isolated from the conditioned airspace. Constructed from stainless steel, this assembly is built to resist corrosion and thermal fatigue caused by repeated heating and cooling cycles. It is typically installed by licensed HVAC technicians during factory-warranty service, heat exchanger replacement, or full furnace rebuild procedures. This assembly is suited for residential and commercial gas heating applications where a direct OEM-style replacement is required. Stainless steel construction makes it appropriate for both standard and high-efficiency furnace configurations that expose the heat exchanger to condensate or acidic flue gas conditions. When the supplier data or installation documentation identifies specific compatible model numbers, technicians should cross-reference the full model and serial range before ordering. Key Features Stainless steel construction resists corrosion and extends service life in demanding heating environments OEM-style assembly designed for direct replacement in compatible RHEEM heating systems Maintains separation between combustion gases and supply air for safe system operation Suitable for both residential and commercial heating applications Compatibility Designed as an OEM-style…