This Personal Room-Sized 21-Pint Dehumidifier Drops to Just $88 During Amazon's Back to School Sale

Dehumidifers are mostly all based on the same time-tested technology (air blown over freezing coils to condense the water vapor into liquid), which means you don't need to get a fancy schmancy brand to get one that works reliably. It also means you don't have to pay a lot of money for one. Case in p…