The Frigidaire FFHT11521 refrigerator has 14.6 cubic feet of interior capacity. This model is the only Frigidaire refrigerator certified by the Department of Energy as an Energy Star appliance, as of 2015.
The Frigidaire FFHT11521 is a top-freezer refrigerator. This design is usually more efficient than side-by-side or bottom-freezer styles, as the refrigerator's compressor is placed in the bottom of the unit and does not have to offset as much of its own waste heat to keep the freezer cold
The FFHT11521 consumes an estimated 420 kilowatt-hours of electricity per year. This power requirement places it among the more power-hungry refrigerators in its size class with Energy Star rankings. More efficient models consume as little as 336 kilowatt-hours per year with the same interior capacity.