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Chest Freezers; What they tell us about designing for X

Technology Connections1 HN recommenders · 2020–2026
2.9M views · explainer · evergreen · Uploaded 2020-04-07

Technology Connections explains how refrigerator and freezer design affects energy use, using chest freezers to show why top-opening designs and layout choices matter. It includes thermal-camera footage of cold air spilling out of upright units.

HN points to it whenever chest fridges or freezer efficiency come up, as a clear explanation of design trade-offs between efficiency and convenience.

Power grid, heating & buildingsMechanical & precision engineeringProduct & industrial design

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5 comments from Hacker News

@fpgaminer2020 · in “How long does a freezer stay frozen when the power goes out?”

Technology Connections did a decent video that covers freezer design decisions like that and others: [VIDEO]

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@tonic52022 · in “Low Energy Chest Fridge”

Combined fridge/freezer units use a heat pump to get the freezer really cold and residual cold air is cycled into the fridge. So having the freezer on bottom is not the optimal design, maybe because cold air is dense and will fall taking more active effort to distribute it. Source: [VIDEO]

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@jbm2023 · in “Use Clean Energy Charging on Your iPhone”

I should bring up that top opening chest fridges are actually pretty great for energy efficiency! [VIDEO] The amount of electricity needed is so small that it might even be comparable (mobile so i haven't calculated yet)

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@Hextinium2026 · in “Chest Fridge”

This reminds me of the Technology Connections fridge rant video. Similar arguments all around, the dumping effect of cold out of a vertical fridge is pretty crazy to watch with a thermal camera. [VIDEO]

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@lelandbatey2026 · in “Chest Fridge”

Mostly yes. Upright fridge and freezer designs trade off efficiency for convenience (rooting around in a chest fridge/freezer can be annoying). [VIDEO]

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