Deep Freezers use WAY less energy than you think

Deep Freezers use WAY less energy than you think

Deep Freezers use WAY less energy than you think
Given the state of the world, you could be forgiven for planning ahead with back-up power and a method of preserving food. Deep freezers – or chest freezers – are great for storing large amounts of food for a long time. But how much juice do they really use? If you’re running on the back-up power of a generator, for example, will the deep freezer suck too much electricity? It turns out the answer will surprise you!

Also, note that some chest freezers use less instantaneous power. I have one that only uses a max of 120W! However, it’s annual kilowatt-hour rating is the same as other units that use 200W. So, a lower power rating doesn’t necessarily mean a lower annual operating cost. Sometimes, the compressor just runs more to compensate.

Finally, keep in mind that the bigger the deep freezer and the more frozen food you have inside, the longer it will all last in the event that you have to unplug it. It’s the same as a small ice cube vs a block of ice the size of a car: the big block of ice will last WAAAY longer.

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August 30, 2021 @ 5:13 am


i have 2 chest freezers, an old whirlpool from the 1970's that uses r-12 refrigerant and a newer kirkland (from costco, made by whirlpool) from the late 90's that uses r-134a refrigerant. both work well but the older whirlpool uses less energy even though it is a few cubic feet larger than the newer one.

ET Himself

September 7, 2021 @ 1:05 pm


In Canada and likely in the US the Federacy guidelines for fridge's is no more that 4 C and -18 C for freezers,. May be different in the EU.


September 22, 2021 @ 5:47 am


Red hill labs has a very detailed video on this.

El Tercero

October 14, 2021 @ 4:41 pm


My question is, can it be used as a fridge?
The fridge is broken and I've just gotten a deep freezer. Everyday I've bought 1 or 2 ,20 pound bags of ice. While waiting on different repairmen to
1) get here the quickest
2) diagnose the problem
3) order the part
4) wait for said part.

And for everyday that passes food either spoils since ice isn't adequate for all items. The Canned biscuits explode, opened jars of food have taken in water (idk which family member didnt close it tightly). General downing sizing from fride to ice chest. And other products just going bad due to their date, like the milk. Ironically the MILK lasted its full term. But it came at the cost of daily ice purchases. I only wrote all this to give my original question context.
Can a deep freezer be used as a fridge? At least until the actual fridge is repaired.

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