Sub-Zero DEC2450FI/*: $108 a year to run

This model (Freezers) uses 512 kWh of electricity a year, which costs about $108 a year and $1,076 over 10 years at 21.0¢/kWh.

Energy use
512 kWh
per year
Running cost per year
$108
21.0¢/kWh
Running cost over 10 years
$1,076
Efficiency rank
598 / 662

10 % less energy than the federal minimum standard.

Product details

TypeUpright Freezer
Total volume (cu ft)12.4
Adjusted volume (cu ft)21.8
RefrigerantR-600a
Federal standard (kWh/year)560
ENERGY STAR Most EfficientNo
Available sinceSeptember 26, 2022

Compared with the average model (Freezers), this one costs about $23 more a year.

More efficient alternatives

Source: ENERGY STAR (U.S. EPA) · 21.0¢/kWh (August 2026) · Methodology