Last updated: August 24, 2021

Welcome to our big vacuum cleaner test 2021. Here we present all the vacuum generator that we have tested in detail. We have compiled detailed background information and added a summary of customer reviews on the web. We would like to make your purchase decision easier and help you find the best vacuum cleaner for you.

You will also find answers to frequently asked questions in our guide. If available, we also offer interesting test videos. Furthermore, you will also find some important information on this page that you should definitely pay attention to if you want to buy a vacuum cleaner.




The most important facts

  • Due to their size and high price, chamber vacuum generators are more suitable for the catering industry. These appliances require maintenance and oil changes at regular intervals.
  • Vacuuming allows a gentle prolongation of the shelf life of food. A vacuum cleaner can be particularly useful for hunters or anglers, as large quantities of meat and fish can be stored for a long time.
  • With the sous-vide method, food can be cooked gently. It is often used by cooking professionals, as the flavours of the food remain much more contained.

The Best Vacuum Generator: Our Picks

Guide: Questions you should ask yourself before buying a vacuum generator

What is a vacuum generator suitable for?

A vacuum cleaner is particularly suitable for preserving food for a longer period of time.

Sausage can be kept for 6-8 days when vacuumed. That's more than twice as long as the unvacuumed sausage. (Image source: pixabay.com / coleur)

This means that large quantities of quickly perishable food or leftovers from the last barbecue can be stored for longer. When you vacuum coffee, the aroma is preserved for longer. The appliance is mainly used in the kitchen, but it also offers other useful functions.

Application Details
Vacuum food increases shelf life, vitamins, minerals and flavours are preserved
Sous-vide food is cooked in the vacuum bag, flavours come out better
Vacuum items vacuumed clothes can be stored in a space-saving way, mobile phone or purse are vacuumed waterproof

Silver cutlery, tools or coins can easily be vacuumed. This protects them from external influences for a long time. Sealed tools do not rust.

For which foods is a vacuum generator useful?

Almost all foods can be vacuumed. It doesn't matter whether they have already been cooked or are still fresh. Gas-forming fruits and vegetables are difficult to vacuum seal and should be blanched first, if at all.

These include asparagus, sugar snap peas and cabbage. For potatoes, pears, apples and carrots, the skin should be left on for vacuuming. Soft foods such as berries require a little sensitivity. They can quickly turn to mush when vacuumed. The vacuum removes the oxygen from the container. This stops the oxidation process, which otherwise attacks the aromatic substances and the important nutrients. This is why vacuuming is very gentle on nutrients.

How long can vacuum generator extend the shelf life of food?

A constant vacuum enables preservation without chemical additives. Below we list a few examples of the shelf life of various foods. A distinction is made between dry storage, storage in the refrigerator and storage in the freezer.

Food unvacuumed vacuumed
Dry storage: Nuts 1-2 months 12-24 months
Biscuits/biscuits 3-6 months 12 months
Storage in the refrigerator: Fish 2-3 days 4-5 days
Game 2-3 days 30-40 days
Storage in the freezer: Vegetables 6-10 months 24-36 months
Minced meat 3-6 months 12 months

Vacuum-packed food can be stored at room temperature, in the refrigerator or in the freezer. The vacuum also eliminates the problem of freezer burn if the goods are stored in the freezer.

How much do vacuum generator cost?

The prices for a vacuum generator vary greatly. The vacuuming process is already widely used in industry. However, these devices are very expensive. In the meantime, there are also affordable models for home use to buy. The cost of a vacuum cleaner varies according to the type of vacuum cleaner:

  • Hand vacuumers from 25 euros
  • Outside vacuum cleaners from 60-200 euros
  • Chamber vacuum cleaners from 600 euros

What is the alternative to a vacuum generator?

When vacuuming, the oxygen must be completely removed from the container. This is, of course, very easy with a vacuum cleaner. However, there are two methods that can also be used to vacuum without a device. One possibility is to remove the oxygen with the help of a straw. In the following, we explain the exact procedure:

  1. Fill the bag with the desired food.
  2. Close the bag almost completely, leaving space only for the straw.
  3. Insert the straw into the free gap and suck out the air with your mouth.
  4. Remove the straw during the last pull and close the bag immediately.

Important: Make sure not to exhale into the straw. This prevents germs from getting into the bag. The second way to create a vacuum works a little differently. Here, the bag is held in water and then sealed.

Decision: What types of vacuum generators are there and which one is right for you?

As you have seen in the sections above, vacuum generators have many functions. Finding the right one for you depends on how often and for what purpose you want to use it. In the following section we will give you information about different types of vacuum cleaners. To give you an overview, we distinguish between:

  • Chamber vacuum sealer
  • Outer vacuum sealer
  • Hand vacuum sealer

With the help of the advantages and disadvantages listed below, you can find out which of the devices suits you best.

What are the advantages and disadvantages of chamber vacuum generators?

Chamber vacuum cleaners are considered the professionals among vacuum cleaners. Here, the complete bag, including its contents, is placed in the chamber of the appliance. They are often used for commercial purposes because they can vacuum large quantities. Butcher's shops, cheese dairies and the catering industry, for example, use vacuum machines as standard equipment. However, they are now also used in private households. The chamber vacuum cleaners work in three steps:

  • Evacuate
  • Sealing
  • Ventilating

In the first step, evacuation, an integrated pump sucks out the oxygen until the desired vacuum is reached. During sealing, the package is then firmly and permanently closed on all sides. This is done by applying heat and pressure. The last step is aeration. Here, pressure is equalised in the unit so that the lid can be opened again.

Advantages
  • Can vacuum seal liquids and jars
  • No special bags required
  • Suitable for large quantities
Disadvantages
  • Expensive
  • Large and unwieldy
  • More suitable for the catering trade

The ambient air is pumped back into the vacuum chamber. If you want to vacuum seal liquids, you should use a chamber vacuum. Soups, sauces or foods with a lot of liquid can be vacuumed easily. This does not work in an external vacuum sealer.

What are the advantages and disadvantages of an external vacuum generator?

External vacuum cleaners are less powerful than chamber vacuum cleaners. This is also noticeable in the wallet, which is why they are often used in private households. They do not have a chamber, but the bag is attached to the outside of the appliance. Instead, it has a slit-like opening into which the opening of the bag is inserted.

Advantages
  • Suitable for private households
  • Affordable price
  • Handy
Disadvantages
  • Not suitable for catering
  • Only with sealed bags
  • Not as powerful as chamber vacuum cleaners

These appliances require certain bags, so-called goffered bags. These bags are created by gauze freezing. The process gives them a certain pattern or grain on their surface. This structure is needed so that the vacuum cleaner can suck out the air completely. An external vacuum cleaner usually sucks out the oxygen automatically. This function is called integrated automatic suction and should definitely be present in your appliance.

What are the advantages and disadvantages of a hand vacuum generator?

Hand vacuum cleaners are considered to be entry-level models and are convincingly low-priced. They are available as manual hand pumps, but also with battery or rechargeable battery operation. The results of hand vacuum cleaners are not comparable to those of chamber and external vacuum cleaners, but they can still produce good initial products.

Advantages
  • Suitable for private households
  • Inexpensive
  • Handy
Disadvantages
  • Low performance
  • Only special bags
  • Time-consuming

The hand vacuum cleaners do not have a function for sealing the bags. You therefore need special bags with a valve to make sealing possible. As a rule, the vacuum bags are easy to clean and can be reused.

Buying criteria: These are the factors you can use to compare and evaluate vacuum generators

In the following, we will show you some aspects that will help you decide between the many different vacuum machines. You can use these to evaluate and compare the devices. In the following, you will find a detailed description of the individual criteria, which we have subdivided as follows:

  • Power/suction force
  • Size and weight
  • Length of welds
  • Additional functions
  • Cleaning

We have listed the individual criteria in more detail here:

Performance/suction power

The final result of a vacuum cleaner often depends on its power. This is specified in watts for the devices. Especially for professional use, a powerful vacuum cleaner should be purchased.

If the appliance is used for private household use, a power of 110 watts is sufficient.

Another important criterion is the suction power of a vacuum cleaner. This ensures that the air is sucked out of the container to create an optimal vacuum. The less air in the bag, the more the shelf life of a food product is guaranteed. A suction capacity of 9 litres per minute is recommended.

Size and weight

Before you buy a vacuum cleaner, it is advisable to look at the dimensions of the appliance. This will ensure that your new machine will fit in the kitchen. The weight also plays an important role. Hand vacuum cleaners are very light and usually even fit in the kitchen drawer. They weigh around 300-600 grams.

External vacuum cleaners are larger and therefore have a higher weight. This varies between 1.5 and 4 kilos. Chamber vacuum cleaners are often very heavy and a specific place should be found for them where they can be left permanently. The most common systems weigh between 25 and 100 kilos.

Chamber vacuum cleaners are larger and have more power. This has the advantage that larger quantities of food can be vacuumed. For household use, however, external vacuum cleaners or a hand vacuum cleaner are often sufficient.

Number of sealing seams

Chamber vacuum cleaners and external vacuum cleaners have the function of completely sealing the bag by welding. This ensures that no air flows into the vacuum.

If the bag is sealed with only one seam, it often happens that air can get in. To avoid this, you should make sure to buy a vacuum cleaner that uses a double seal.

Hand-held vacuum cleaners cannot seal the bag. There are extra bags with a valve that you have to seal yourself after extracting the air.

Additional functions

Chamber and external vacuum cleaners often differ in their additional functions. They usually have an automatic suction system. This means that the appliance automatically removes the oxygen.

Some appliances have the function of regulating the vacuum themselves. This offers the advantage of gently vacuuming very delicate foods (e.g. berries). In addition, the suction of liquid can be reduced.

Another difference is an integrated film roll. This can make the vacuuming process easier. The vacuum cleaner and the film are directly together. The film can simply be pulled out of the film box and filled without having to remove it.

An integrated cutter that cuts the film roll to the right length is also useful. In addition, some of the vacuum cleaners have an integrated hose. This allows you to suck air out of containers. The containers are often supplied with the machine or can be purchased separately. Not every vacuum cleaner can perform this function. So find out before you buy whether the vacuum cleaner has this additional function.

Cleaning

Cleaning household appliances is always a big issue to ensure hygienic work in the kitchen. Depending on the type of vacuum cleaner, cleaning can take different amounts of time and effort. A hand vacuum cleaner can be cleaned very quickly and easily. Due to its compact size, any area can be easily cleaned by hand.

The appliances should not be put in the dishwasher! Cleaning chamber vacuum cleaners is a little more time-consuming. The vacuum chamber and sealing bars are usually removable and can be cleaned by hand. At regular intervals, the appliances require maintenance and additional oil changes. No maintenance is required for external vacuum cleaners. The devices can often be disassembled a little so that the dirty areas can be cleaned by hand.

Facts worth knowing about vacuum generators

Why does meat marinate faster in a vacuum?

Vacuuming meat not only increases its shelf life, but also allows marinades to soak in more quickly. Instead of waiting for hours, you only have to wait a few minutes.

Fish can also be marinated very well. This is a good alternative for anyone looking for a change from meat. (Image source: pixabay.com / Herm)

But how does it work? Vacuuming creates negative pressure. This allows the marinade to soak into the meat faster and better. This means that after a few minutes the meat has already absorbed the aroma of the spices.

What does sous-vide mean and how does it work?

The cell structure of food is very sensitive. So intense heat can damage meat and vegetables. The meat becomes tough and dry, the vegetables tasteless and soft. The sous-vide technique is intended to avoid this and increase the culinary value. There are special sous vide cookers for this purpose.

In the sous-vide method, the food is sealed in a vacuum bag and then gently cooked in a water bath. This has the advantage that no liquids can escape. Thus, the food bathes in its own juices, which is why the aroma is not lost. By controlling the water temperature, the cooking temperature can be monitored very precisely. This process is used by many top gastronomies to present customers with a perfect taste experience.

Image source: 123rf.com / Elena Fedulova, 107642070

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