Basic Steps to Vacuum Seal Food with a FoodSaver

A FoodSaver vacuum sealer removes air from a bag, then heats the opening shut. The machine does most of the work — you prepare the food and bag, slide it into the sealer, and press the button. The whole process takes under a minute per bag once you know the rhythm.

Start by placing your food in a FoodSaver bag (the textured kind designed for the machine, not regular freezer bags). Leave at least two inches of empty space at the top — the sealer needs room to grip and heat the plastic. Lay the bag flat on a table so the food settles to the bottom and stays away from the seal line.

Open the sealer's lid and slide the open end of the bag into the channel, with the plastic sitting flat against the heating strip. Close the lid firmly until you hear it click or lock. Press the vacuum and seal button (usually one button that does both, or two separate buttons depending on your model). The machine will pull air out, then heat the bag shut. When the cycle finishes, the lid releases automatically or you lift it open.

Key Takeaways

  • FoodSaver bags must have at least two inches of empty space at the top so the sealer can grip and heat the plastic without touching your food.
  • Lay the bag flat on a table before sealing so food settles to the bottom and stays away from the heating strip.
  • Slide the open end of the bag into the channel with the plastic sitting flat, then close the lid and press the vacuum and seal button.
  • Wet foods like marinated meat or soup require a different technique — freeze them first or use the accessory port and special containers to avoid leaks.
  • Most FoodSaver models seal bags in 30 to 60 seconds, and sealed bags keep food fresh in the freezer for months longer than unsealed bags.

Preparing Food Before You Seal

Dry foods — chicken breasts, ground beef, vegetables, cheese, bread — go straight into the bag. Pat meat dry with a paper towel first; excess moisture can interfere with the seal. For vegetables, spread them in a single layer on a baking sheet and freeze for two hours before sealing. This keeps them from getting crushed and makes them easier to portion later.

Wet foods like marinades, soups, or raw fish are trickier. If you vacuum-seal a bag of liquid, the machine will suck the liquid up into the sealer head and damage it. Freeze the food solid first — lay it flat in the bag and freeze overnight — then seal it. The frozen block won't move into the machine. Alternatively, use the accessory port on the side of the machine (if your model has one) with special vacuum containers designed to hold liquid without leaking into the sealer.

Soft foods like bread, pastries, or fresh berries will crush under the vacuum. Use the gentle seal setting if your FoodSaver has one, or skip the vacuum step entirely and just use the seal function to close the bag. You keep the food fresh without the crushing pressure.

Choosing the Right Bag Size and Type

FoodSaver sells bags in several widths: 8 inches, 11 inches, and gallon-size. Measure your food and pick a bag that fits snugly without wasting plastic. A single chicken breast fits in an 8-inch bag; a pound of ground beef needs 11 inches; a gallon bag holds a whole cut-up chicken or several portions at once.

Do not use regular freezer bags or sandwich bags — they lack the textured surface that the FoodSaver sealer grips. The machine needs that texture to pull air out and heat the plastic. FoodSaver bags are thicker than standard bags and designed specifically for this machine. You can buy them in bulk rolls and cut them to length, which costs less per bag than pre-cut sizes.

Store-brand vacuum bags sometimes work, but they are thinner and less reliable. If you use them, test one first before sealing a large batch of expensive food. The seal may not hold as long, especially in the freezer.

Troubleshooting Common Sealing Problems

If the bag does not seal completely, the most common cause is food or moisture touching the heating strip. Open the bag, wipe the strip clean with a dry cloth, and try again. Check that you left two inches of space at the top and that the bag was lying flat when you sealed it.

If the machine makes a burning smell or the plastic melts unevenly, the heating strip may be dirty or the bag may have shifted during sealing. Let the machine cool for a few minutes before the next use. Wipe the heating strip with a damp cloth and dry it completely. Never use water or cleaning solution on the strip — a damp cloth is enough.

If the vacuum does not pull air out, check that the lid is closed all the way. The machine will not start if the lid is not locked. Also make sure the bag is sitting flat in the channel with no wrinkles or folds that could block the seal. If the machine still does not vacuum, the seal may have already formed before the vacuum cycle started — this happens if you press the button twice by accident.

Storing and Labeling Sealed Bags

Sealed bags stack flat in the freezer, taking up much less space than containers. Lay them in a single layer until frozen solid, then stand them upright like files in a drawer or box. This makes it straightforward to see what you have and grab what you need.

Label each bag with the contents and the date you sealed it. Use a permanent marker on the plastic, or stick a label on before sealing. Most frozen food stays good for three to six months, though vacuum-sealed food lasts longer than unsealed because the lack of air slows freezer burn. Meat and fish last four to six months; vegetables and bread last three to four months.

Thaw sealed bags in the refrigerator overnight, or run them under cool water for 30 minutes. Do not open the bag until you are ready to cook — the seal keeps bacteria out while thawing.

Maintenance and Care

Clean the heating strip after every few uses, especially if you seal wet foods or anything with crumbs. A dirty strip will not seal properly and can overheat. Unplug the machine, let it cool, and wipe the strip with a dry cloth. For stubborn residue, use a slightly damp cloth, then dry it completely before plugging the machine back in.

Check the rubber gasket (the seal around the lid) every few months. If it looks cracked or dried out, it may not close tightly enough to vacuum properly. FoodSaver sells replacement gaskets that snap in and out — they cost under ten dollars and take two minutes to swap.

Store the machine in a dry place. Do not wrap the cord tightly around it, as this can damage the wire over time. Leave the lid open when the machine is not in use so the gasket does not stay compressed.

When to Use Vacuum Sealing Versus Other Storage Methods

Vacuum sealing works best for foods you plan to freeze. It slows freezer burn and keeps food fresh longer than regular bags or containers. It is less useful for the refrigerator — sealed bags take up more space than open containers, and you cannot see the food without opening the bag.

For pantry storage of dry goods like flour, sugar, or cereal, vacuum sealing keeps pests out and extends shelf life, but airtight containers with snap lids are cheaper and easier to open repeatedly. For sous vide cooking (cooking food in a water bath), vacuum sealing is essential — the bag must be airtight so the food cooks evenly in the water.

If you seal food and then refrigerate it, use it within three to five days. The seal keeps bacteria out while frozen, but once thawed, the food is no safer than it would be in a regular bag. Vacuum sealing does not replace proper food safety — it just extends freezer life.

Frequently Asked Questions

Can I reuse FoodSaver bags?

You can wash and dry a bag and reuse it once or twice, but the seal weakens each time. The plastic stretches slightly when you open it, and the textured surface wears down. For the best results and longest storage, use a new bag each time. Bulk rolls are inexpensive enough that reusing is not worth the risk of a failed seal.

What is the difference between vacuum sealing and regular freezer bags?

Regular freezer bags trap some air inside no matter how carefully you seal them. Vacuum sealing removes nearly all the air, which slows freezer burn and keeps food fresh two to three times longer. Vacuum-sealed bags also take up less freezer space because they lie flat.

Do I need to thaw food before cooking if it is vacuum sealed?

No. You can cook vacuum-sealed food straight from the freezer — just add a few extra minutes to the cooking time. For sous vide, you cook the food in the sealed bag in a water bath, so thawing is not necessary. For oven or stovetop cooking, thawing first is faster but not required.

Can I vacuum seal hot food?

No. Let food cool to room temperature first. Hot food creates steam, which can warp the bag and interfere with the seal. It can also damage the heating strip. Cool the food in the refrigerator for at least an hour before sealing.

How long do vacuum-sealed bags last in the freezer?

Most vacuum-sealed food lasts three to six months in the freezer, depending on the type. Meat and fish last four to six months; vegetables and bread last three to four months. The exact time depends on the freezer temperature and how well the seal holds. Properly sealed bags with no air leaks last longer than bags with small holes or weak seals.