The vacuum sealer is one of those small appliances that, once adopted, quickly become indispensable. But how does it actually work, and what makes it so effective at preserving your food? We'll explain everything.
The principle: removing air to protect food
A vacuum sealer sucks the air out of an airtight bag before sealing it. Without air—and therefore without oxygen—the reactions that degrade food (oxidation, mold, bacterial proliferation) are greatly slowed down. This is what allows you to store your food up to 5 times longer than with simple plastic wrap or a container.
How to use it in 4 steps
- Fill the bag with the food to be stored.
- Close the zipper of the airtight bag.
- Press the button: the device sucks out the air.
- It stops automatically once the vacuum is achieved. It's ready.
The operation takes about 5 seconds. No special skills are required.
Portable or bulky: what's the difference?
Older vacuum sealing models were bulky, corded, and difficult to store—which is why many ended up at the back of a cupboard. Portable and rechargeable models have changed the game: compact (they fit in a drawer), cordless, USB-C rechargeable, and simple enough for everyday use. It's this ease of use that makes all the difference.
Why it really changes daily life
Beyond preservation, a vacuum sealer saves you money by reducing food waste—up to 80% less waste for some households. It also facilitates batch cooking (preparing meals in advance), storing leftovers, and even low-temperature sous vide cooking for the gourmands.
Our tips for getting started
Start with the foods you throw away most often: cheeses, meats, fresh vegetables, leftovers. Use reusable bags to stay economical and ecological. And remember to date your bags for easy tracking in the fridge or freezer.
Want to get started? Discover the NovaDeals portable vacuum sealer: cordless, rechargeable, and comes with its reusable bags.