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Sub-Zero Refrigerators: energy use and running cost

The average model uses 384 kWh a year, which costs $81 a year at 21.0¢/kWh.

Most efficient models

ModelkWh/yearCost/year
Sub-Zero DEU2450R/ADA/*159$33
Sub-Zero DEU2450R/*168$35
Sub-Zero DEU2450RO/*168$35
Sub-Zero DEU1550B*/*183$38
Sub-Zero ID-24R*213$45
Sub-Zero DEU2450B*/ADA/*215$45
Sub-Zero ID-27R217$46
Sub-Zero ID-30R221$46
Sub-Zero ID-36R230$48
Sub-Zero DEU2450B*/*243$51
Sub-Zero DEC2450R/*302$63
Sub-Zero DET3050R**/*324$68
Sub-Zero DEC3050R**/*332$70
Sub-Zero DET3650R**/*353$74
Sub-Zero DEC3650R**/*362$76
Sub-Zero CL3650R**/S/*/*370$78
Sub-Zero ID-30C374$79
Sub-Zero DEU2450CI/*408$86
Sub-Zero DEC1850FI/*455$96
Sub-Zero ID-30CI458$96
Sub-Zero DET3050CI**/*550$116
Sub-Zero CL3050U**/S/*/*557$117
Sub-Zero DET3650CI**/*593$125
Sub-Zero CL3650U**/S/*/*596$125
Sub-Zero CL4250UFD**/S/*637$134
Sub-Zero CL4850S/S/*746$157

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