Put simply, vacuum sealers do two things. First, they remove air from food storage bags or containers, and, second, they seal the bags or container so that air cannot get back in. People who need to preserve food that otherwise might go bad can use a vacuum sealer to keep food eatable for much longer than it would have been without the vacuum sealer. It's also possible to use vacuum sealers to reseal packages, such as, say, a bag of chips. If someone is eating from a large bag of chips and he or she wants to preserve the freshness of the remaining portion, he or she can apply a vacuum sealer to remove air from the bag of chips and then to seal it so that no air can get inside.

But while vacuum sealers are useful for sealing chips and other goodies, they are primarily preparing food for storage. Consumers trying to justify a purchase should factor in how much money they will save by not having fruit, vegetables and meat spoil. Once a bag or container has been treated with a vacuum sealer, it can then be stored in an appropriate location, such as a fridge, freezer or pantry.

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