I want to give them the benefit of the doubt and say perhaps it's a deep freezer that is only opened occasionally, and I guess is pretty well sealed as long as it's closed.
The kitchen appears to have one of those built-in fridges that matches the cabinets:

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[–] 3 points 3 years ago

Maybe it's for freezing the clothes after cleaning them in the washing machine to make sure they stay fresh and don't go bad. Either that or freeze-drying.
jk

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