How much does a chest freezer cost to run?

Updated 7 November 2026 · ClearCost UK · 3 min read

A chest freezer uses about 35W. At 27p per kWh, running it around the clock (average power) costs about £0.009 an hour, £6.90 a month and £83 a year.
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Chest freezer running cost at different electricity prices

The figures use 35 watts and around the clock (average power). Your own price per kWh is on your electricity bill, so pick the row closest to it, or change the numbers in the calculator.

Cost = watts ÷ 1,000 × hours × price per kWh. For a 35W chest freezer, one hour uses 0.035 kWh.

Chest freezer: 35W, around the clock (average power)

Electricity pricePer hourPer dayPer monthPer year
20p per kWh£0.007£0.17£5.11£61
25p per kWh£0.009£0.21£6.39£77
30p per kWh£0.011£0.25£7.67£92
35p per kWh£0.012£0.29£8.95£107

Typical wattage. Check the label on your own appliance.

Chest freezer running cost by hours of use

How long you use it matters more than almost anything else. The table shows the cost of using a 35W chest freezer for different amounts of time each day at 27p per kWh.

Chest freezer at 27p per kWh

Hours per dayCost per dayCost per monthCost per year
30 minutes£0.005£0.14£2
1 hour£0.009£0.29£3
2 hours£0.019£0.58£7
4 hours£0.038£1.15£14
8 hours£0.076£2.30£28
24 hours£0.227£6.90£83
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How much power does a chest freezer use?

A typical chest freezer is rated around 35W, which is 0.035 kW. Over a year of the use above that adds up to about 307 kWh. Average power over 24 hours. A full freezer holds its cold better and uses a little less energy.

Wattage varies between models. Look for the power rating on the label, in the manual or on the maker's website, and enter it in the calculator for an exact answer.

How it compares with other appliances

Typical wattage and typical use for each appliance, at the same electricity price. A high cost per hour does not always mean a high yearly cost, because it depends on how often you use it.

Compared at 27p per kWh

ApplianceTypical powerCost per hourCost per year
Chest freezer (this page)35W£0.009£83
Fridge freezer40W£0.011£95
LED TV (55 inch)90W£0.024£44
Games console200W£0.054£59
Desktop computer200W£0.054£99
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Ways to cut the cost of running a chest freezer

  • Use it less at peak times if you are on a time-of-use tariff, and more when power is cheapest.
  • Choose a model with a high energy rating when you replace it. The saving over its life is often bigger than the price difference.
  • Switch it off at the wall when it is not in use if it has a standby draw.
  • Check your tariff. A lower unit rate cuts the cost of every appliance in the house.

Sources and further reading

Questions people ask

How much does it cost to run a chest freezer?
About £0.009 an hour, £6.90 a month or £83 a year at 27p per kWh, using it around the clock (average power).
How much does a chest freezer cost to run for 24 hours?
Running a 35W chest freezer for 24 hours straight would use 0.84 kWh and cost about £0.23 at 27p per kWh.
How many watts does a chest freezer use?
A typical chest freezer uses about 35 watts. The exact figure is on the label or in the manual.
What electricity price should I use?
The Ofgem price cap sets the maximum unit rate for most standard variable tariffs and changes every three months. Use the p/kWh figure on your own bill.

Results are estimates for information only, not financial advice. Read the full disclaimer.

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