Household · official-source review · reviewed 2026-10-26
A freezer costs about the same to run whether it is full or half empty, so empty shelves carry real money.
Turn the rated yearly energy, usable volume, and fill level into a cost per filled cubic foot.
Anyone deciding whether to fill, consolidate, or downsize a freezer.
Use the source document or official route that applies to your situation. This guide does not contact another person or verify external information.
Use the kWh per year on the EnergyGuide label or in the manual.
Use the usable cubic feet printed for the model, not the outside box size.
Estimate the filled share honestly. A shelf count is enough for a planning figure.
Take the kilowatt-hour price from your own bill.
The App shows the cost carried by filled space and by empty space.
A 350 kWh freezer at 17 cents costs $59.50 a year. At 40 percent full, the four used cubic feet carry $14.88 each and empty space carries $35.70.
Use your own source and details. The example is not a record about a real person or organization.
The same freezer cost split across two fill levels. Both are examples.
Both cases are examples, not records about a real person. The bars show the same numbers the free App computes.
U.S. Environmental Protection Agency, Energy Star · reviewed 2026-10-26
What this source supports: Energy Star publishes efficiency criteria and estimated ranges for major appliances.
Source limit: Model-specific energy use varies. Read the EnergyGuide label for the exact unit you own or plan to buy.
These sources support the statements above. They do not show that every person needs this guide. They do not show a specific result.
This guide allocates the rated energy cost across filled and empty space. It does not claim that filling a freezer always saves energy.
Model-specific energy use varies. Read the EnergyGuide label for the exact unit you own or plan to buy.
Use current instructions from the responsible organization. This guide is a planning aid, not an official decision or a substitute for qualified advice.
Allocate yearly freezer energy cost across filled and empty usable space.
This App allocates the energy you enter. It does not measure the freezer, the temperature, or the food inside.
You enter every number yourself. The sources support the method and the limits. They do not produce a result for your specific case. Keep the original documents next to the sheet you build.
The App computes the worked example with your own numbers, in your browser.
APP 1
Allocate yearly freezer energy cost across filled and empty usable space.
Free · no account · no upload
Open Freezer Fill Cost per Cubic FootThe App runs in this browser. It does not send or save entries. Copy, download, or print only when you choose.
This guide uses short, direct instructions as an ASD-STE100-style writing target. It is not a formal certification.
Companion App: Freezer Fill Cost per Cubic Foot. It runs in this browser and does not upload your entries.
This guide is edited for clarity and checked against the sources it links. It is not a substitute for official instructions or qualified advice. A linked source does not show that every person needs this guide.