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KOIOS VS2233 Review

This kitchen appliance did fairly well in our tests, but not quite well enough to win an award
KOIOS VS2233
Credit: Jenna Ammerman
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Price:   $80 List | $57.97 at Amazon
Pros:  Good with delicate foods, fairly good value
Cons:  Not the most convenient, average sealing performance
Manufacturer:   KOIOS
By David Wise and Austin Palmer  ⋅  Jan 3, 2019
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55
OVERALL
SCORE


RANKED
#5 of 9
  • Sealing Performance - 40% 5
  • Convenience - 30% 5
  • Delicate Foods - 20% 7
  • Suction Power - 10% 6

Our Verdict

While we didn't find any major issues with the Koios VS2233, it didn't do quite well enough to win an award. This kitchen appliance does quite a good job at sealing delicate food items without smashing them and has a slightly stronger than average suction performance, but it only did a mediocre job in our sealing performance tests, and some other models are far easier to use. Overall, this makes it hard to recommend this product, as it costs about the same as some of our award winners, but can't come close to matching their performance.

Compare to Similar Products

 
KOIOS VS2233
This Product
KOIOS VS2233
Awards  Editors' Choice Award Top Pick Award   
Price $80 List
$57.97 at Amazon
$50 List
$49.99 at Amazon
$60 List
$59.97 at Amazon
$70 List
$57.50 at Amazon
$70 List
$41.99 at Amazon
Overall Score Sort Icon
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Star Rating
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Pros Good with delicate foods, fairly good valueIntegrated bag roll and cutter, limited overheating issues, auxiliary suction hose, excellent pricePowerful suction pump, gentle on food, manageable size and weight, great priceTender with delicate foods, solid valueGood price
Cons Not the most convenient, average sealing performanceNo drip tray, so-so suction powerNarrow seal, overheats quickly, finicky touch screenCan't seal a ton of bags successively, slow vacuuming/sealing actionSubpar sealing performance
Bottom Line This kitchen appliance did fairly well in our tests, but not quite well enough to win an awardThis inexpensive and easy to use machine can seal bag after bag to just the right amount of suctionThis relatively low-cost machine offered a consistent performance across the board and excelled in gentle sealingIf you are looking for a decent vacuum sealer that has a deft touch with soft foods, this is a good choiceThis well-priced model allows you to enjoy the benefits of a vacuum sealer without breaking the bank
Rating Categories KOIOS VS2233 Amazon Basics Vacuu... Mueller Vacuum Sealer NutriChef PKVS18BK Geryon E2900-MS
Sealing Performance (40%)
5.0
7.0
6.0
6.0
4.0
Convenience (30%)
5.0
7.0
6.0
6.0
6.0
Delicate Foods (20%)
7.0
9.0
10.0
8.0
6.0
Suction Power (10%)
6.0
3.0
8.0
7.0
5.0
Specs KOIOS VS2233 Amazon Basics Vacuu... Mueller Vacuum Sealer NutriChef PKVS18BK Geryon E2900-MS
Measured Vacuum Strength 17 -inHg 14.5 -inHg 19 -inHg 18 -inHg 16.5 -inHg
Measured Weight 2.8 lbs 3.1 lbs 2.7 lbs 2.9 lbs 2.2 lbs
Air Suction Hose Included? Yes Yes Yes Yes Yes
Removable Tray? No No No No No
Built-in Roll Storage? No Yes No No No
Built-in Bag Cutter? No Yes No No No
Measured Seal Thickness 2 mm 3 mm 2 mm 2.5 mm 2 mm
Measured Average Seal Time 13 seconds 9 seconds 6 seconds 7 seconds 6 seconds

Our Analysis and Test Results

The Koios VS2233 is good at sealing delicate items and has a decently strong vacuum, but it doesn't seal as well and isn't as convenient to use as other models that scored higher in our tests.

Performance Comparison


The Koios did fairly well, but couldn't quite snag an award.
The Koios did fairly well, but couldn't quite snag an award.
Credit: Jenna Ammerman

Sealing Performance


For this metric, we compared how quickly each product could seal different types of food, the number of bags it could seal in a row, the thickness of the heat-sealed area, and if there was an increase in pressure when sealing manually. The Koios got off to a bit of a rough start in our speed test, being one of the slowest vacuum sealers to seal. We tasked each product to seal four slices of bread, a pound of ground beef, four pre-cooked sausages, and one cup of dried rice. This sealer was among the slowest in each of these tests, taking 9-11 seconds longer than the average time.

The Koios failed to evacuate all of the air in our sausage sealing...
The Koios failed to evacuate all of the air in our sausage sealing assessment.
Credit: Jenna Ammerman

However, the Koios did fairly well in our next evaluation. This model was able to seal 14 bags in a row before there was a noticeable loss in suction, but we wouldn't necessarily do this in normal practice if we were sealing food for sous vide or long-term storage. The heat-sealed section is slightly thinner than average, only measuring about 2mm across, compared to the average 2.5mm.

Finally, the Koios did decently well in our manual sealing test. While it didn't completely maintain pressure when we manually initiated a seal, the vacuum only lost about one inch of mercury before the heat seal completed.

Convenience


Following our sealing performance set of tests, our round of convenience assessments came next in terms of importance. We awarded points to sealers that had a convenient place to store a roll of bags and an easy way to cut them, if there was a tray that you can take out to make cleanup easier, the overall form factor of each vacuum sealer, as well as the interface and if there were any included accessories.

The Koios is about average in terms of convenience.
The Koios is about average in terms of convenience.
Credit: Jenna Ammerman

This product got off to a bit of a rocky start, lacking both a cleaning tray or a place to store a roll of bags. It also does not have any sort of integrated bag cutter.

We wished this product had a removable tray to make cleanup easier.
We wished this product had a removable tray to make cleanup easier.
Credit: Jenna Ammerman

However, the Koios did earn a few extra points by taking up an average amount of counter space and being lighter than average. We also liked that the lid locks down so you don't have to hold it while sealing and that it includes a pump attachment for sealing rigid containers with small holes. Unfortunately, we weren't totally thrilled with the interface, finding that the buttons weren't always the most responsive to anything besides a really hard press.

The buttons on the Koios take quite a bit of force.
The buttons on the Koios take quite a bit of force.
Credit: Jenna Ammerman

Delicate Foods


For our delicate foods metric, we scored each sealer on how much control you have when manually sealing an easily squashed item — like white bread, crackers, or berries. We looked at both the ease of pulsing the vacuum on and off and how finely we could control the amount the food that was squished when comparing performance between products. The Koios did very wel here.

You can seal crackers without cracking them if you are careful enough.
You can seal crackers without cracking them if you are careful enough.
Credit: Jenna Ammerman

The controls on the Koios are very simple to pulse for soft items, with the vacuum starting and stopping with the "Vac/Seal" button. This also makes it easy to pretty precisely control the amount of vacuum and not squash your food. However, the Koios can occasionally fail to respond to your button presses, squishing your food considerably.

Croissants take a bit of finesse to vacuum seal, as they are easily...
Croissants take a bit of finesse to vacuum seal, as they are easily crushed.
Credit: Jenna Ammerman

Suction Power


For our final metric, we measured the actual strength of the vacuum using a dial gauge built into one of the usual bags. The Koios finished with an average performance, managing to pull a vacuum that registered as 17 inches of mercury on the gauge — right in line with our average of 17.3.

The Koios pulls one of the stronger vacuums.
The Koios pulls one of the stronger vacuums.
Credit: Jenna Ammerman

Value


This vacuum sealer retails at a solid price, but some less expensive models outperform it.

Conclusion


Overall, we didn't dislike the Koios VS2233, though it is a bit slow. We were simply uninspired by its results and it failed to noticeably distinguish itself from the rest of the group.

David Wise and Austin Palmer