Where does this come from, and can I check it?

A small heater briefly warms the evaporator so frost drops away unseen. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a everyday life fact?

Yes. It sits on the Everyday Life shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

Frost free freezers melt their own ice

A small heater briefly warms the evaporator so frost drops away unseen Moisture in the air freezes onto the cold evaporator coils, and left alone that ice insulates them. A controller runs a defrost heater for a few minutes several times a day, melting the frost into a trough that drains outside. The compressor shuts off during the cycle, so the food stays frozen while the coil is cleared. It sits in Mondo's everyday life collection, one of 200 facts that each trace back to the reference below.

Where this comes from

Encyclopaedia Britannica

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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Technology trivia General Knowledge trivia

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Tags: refrigeration, kitchen, appliances

Frost free freezers melt their own ice: the short answers

Where does this come from, and can I check it?: A small heater briefly warms the evaporator so frost drops away unseen. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a everyday life fact?: Yes. It sits on the Everyday Life shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.