How can I calculate my freezer’s annual energy cost from the kWh figure?
FAQ
Use the kWh figure from the label or spec sheet, then multiply by your electricity unit rate.
This FAQ is designed for a fast answer first. Use the related guide links if you need the fuller decision path behind the short version.
Use the kWh figure from the label or spec sheet, then multiply by your electricity unit rate.
If it’s listed as kWh per 24 hours (kWh/24h):
Annual kWh = (kWh/24h) × 365
Annual cost = Annual kWh × your € per kWh
If it’s listed as kWh per year (kWh/annum):
Annual cost = (kWh/year) × your € per kWh
If you only have a power figure in kW:
Annual kWh ≈ kW × average hours running per day × 365
(Commercial freezers don’t run 24/7 at full load, so this is only a rough estimate unless you measure it.)
For a quick “owner quick checks card” beside the unit, write your current rate and a one-line formula staff can use: € per year = (kWh/24h × 365) × € per kWh.
Read the full guide: Unifrost Upright Freezer Energy Use: Owner Quick Checks for Irish Kitchens.
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