{"product_id":"rheem-as-108840-18-heat-exchanger-assembly","title":"Rheem as-108840-18 Heat Exchanger Assembly","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe RHEEM as-108840-18 is a stainless steel heat exchanger assembly designed for use in residential or light commercial heating equipment. The heat exchanger is the core thermal transfer component in a gas furnace, separating combustion gases from the circulated air stream while transferring heat to the supply air. Constructed from stainless steel, this assembly offers resistance to thermal cycling stress and corrosion that is typical in high-efficiency condensing applications. Installation is performed by a licensed HVAC technician as part of a furnace repair or major component replacement service.\u003c\/p\u003e\u003cp\u003eHeat exchanger assemblies are found in forced-air gas furnace systems, typically installed in the heat section of the unit. This part is suited for residential furnace repair applications where the original exchanger has developed cracks, corrosion, or mechanical failure. A failed heat exchanger is a critical safety concern due to potential combustion gas migration into the supply air stream, making prompt and correct replacement essential.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eStainless steel construction for durability under repeated thermal cycling\u003c\/li\u003e\n\u003cli\u003eOEM-style assembly for direct replacement in compatible RHEEM furnace units\u003c\/li\u003e\n\u003cli\u003eFull assembly format reduces field fabrication and simplifies swap-out\u003c\/li\u003e\n\u003cli\u003eCritical safety component separating combustion gases from conditioned airspace\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement heat exchanger assembly for compatible RHEEM gas furnace systems. Verify model and serial number against RHEEM documentation before ordering to confirm fitment.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eHeat exchanger replacement must be performed by a licensed HVAC technician. Shut down gas supply and disconnect electrical power to the furnace before beginning disassembly. Follow applicable local codes and IFGC guidelines for gas appliance service. After installation, perform a combustion analysis and check for flue gas leaks before returning the unit to service.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: Each\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: RHEEM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: as-108840-18\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RHEEM","offers":[{"title":"Default Title","offer_id":51383445094706,"sku":"AS-108840-18","price":1085.65,"currency_code":"USD","in_stock":true}],"url":"https:\/\/voomisupply.com\/products\/rheem-as-108840-18-heat-exchanger-assembly","provider":"Voomi Supply","version":"1.0","type":"link"}