The typical lifespan of a Rheem furnace is 15 to 20 years with proper maintenance, which is standard for mid-range furnaces and competitive with other brands like Carrier and Trane that last 15 to 20 years as well. Rheem Manufacturing Company, founded in 1925, headquartered in Atlanta, Georgia, owned by Paloma Industries, makes Rheem furnaces including gas furnaces with AFUE efficiency of 80 percent for budget and 96 percent for high-efficiency, costing $2500 to $5000 installed. Rheem furnaces last 15 years for basic single-stage models and up to 20 years for high-end variable-speed Prestige series with proper maintenance including annual professional tune-up, filter changes every 1 to 3 months, and keeping vents clear. Factors that shorten lifespan include lack of maintenance, dirty filters causing overheating, oversized furnace short cycling, and hard use in extreme climates. Rheem offers warranties of 10-year parts and limited lifetime heat exchanger warranty, which is competitive. Compared to budget Goodman which lasts 12 to 15 years, Rheem lasts longer. Compared to premium Trane which lasts 15 to 20 years, similar. So typical lifespan is 15 to 20 years, with maintenance like annual cleaning, filter changes, and not overheating extending to 20 years, with heat exchanger often lasting lifetime of furnace.
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