How long does a freezer stay frozen when the power goes out?

Re:How long does a freezer stay frozen when the power goes out? by jve on Monday August 10, 2020 @01:50AM (#24105990)

From what i'v read, freezers are designed to be placed in ambient temperature greater than +10C.

There are specificially designed freezers that can withstand up to -15C ambient temp: https://home.liebherr.com/en/lva/products/household-applianc...

A guy on the phone that sells used freezers told me that compressor has some liquid that gets thicker when temperature drops below X and compressor has to work harder.

The other reason i'v read somewhere is related to compressor not maintaining stable temperature, won't turn on when needed etc.

These may be false statements and I ask for some guidance from professionals - is that the case? I understand when temp may fall below 0, you need some special freezer. Liebherr guy assured me any of their freezers will work OK as long as it is > 0C. But he couldn't tell about other manufacturer freezers.

As i'm in the process of buying a freezer that has to work in basement, could someone chime in please? Is Liebherr my only option?

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Re:How long does a freezer stay frozen when the power goes out? by mschuster91 on Monday August 10, 2020 @04:06AM (#24106755)

Uhh, if your basement frequently gets below 0 °C, you have far bigger problems than the freezer. This should normally not happen unless you're living somewhere in the Arctic.

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Re:How long does a freezer stay frozen when the power goes out? by jve on Monday August 10, 2020 @08:06AM (#24108357)

I have a dedicated garage with basement that is detached from home. I still have to see what temp there is in winter.

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Re:How long does a freezer stay frozen when the power goes out? by mschuster91 on Monday August 10, 2020 @10:42AM (#24109764)

Unless you're in deep Canada, any basement should always be deep enough stay above the frost line: https://en.wikipedia.org/wiki/Frost_line

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Re:How long does a freezer stay frozen when the power goes out? by ants_a on Monday August 10, 2020 @09:12AM (#24108860)

I have a Beko upright freezer that the documentation states is fine until -10C. Probably around half the price of a similar Liebherr.

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Re:How long does a freezer stay frozen when the power goes out? by jve on Monday August 10, 2020 @10:35AM (#24109681)

Thanks. Looks like Beko makes -15 freezers too. https://www.beko.co.uk/appliances/refrigerators/freezers/out...

Pity that they are nowhere to be found where I live.

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Re:How long does a freezer stay frozen when the power goes out? by bickeringyokel on Monday August 10, 2020 @05:00AM (#24107060)

Why would you keep running the freezer when the ambient temp is freezing?

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Re:How long does a freezer stay frozen when the power goes out? by theothertom on Monday August 10, 2020 @05:13AM (#24107140)

"Freezing" and "freezer cold" aren't the same temperature - I'd generally consider "freezing" to be about 0°C, where a freezer should be at most -18°C in order to stop food from spoiling.

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