Are Rheem heaters energy efficient?

Several Rheem heating products in production as of 2015 qualify as energy-efficient appliances under the ENERGY STAR program when installed in the proper configuration. Qualifying devices include models in Rheem's heat pump, gas furnace and oil furnace product lines.

Rheem heating products that qualify as ENERGY STAR efficient products are among some of the most efficient available products of their kind currently available. For example, gas furnaces in Rheem's RGFG model line are rated with average fuel use efficiencies of 95 percent or more, while Prestige series heat pumps can achieve seasonal energy efficiency ratings of as high as 17 in some configurations.