DometicAtwood 33301 OEM Heat Exchanger for DFM Series FurnacesOver time, a heat exchanger may need to be replaced due to rust or corrosion. Corrosion weakens the metal, which can cause it to crack or break. If the furnace is not properly maintained, the heat exchanger to can fail prematurely.Keep your Dometic DFM series furnace running safely and efficiently by replacing the damaged heat exchanger with this OEM assembly.Compatible with:Dometic DFM series medium furnacesRelated ProductsDFMD Furnaces