The 6 Best CO2 Airlocks (2023 reviews)

The features department is where vintage shop co2 airlock truly manages to shine. This airlock works well for beer, wine, or sauerkraut. It makes your brewery look like a scientist's lab. The plastic is bpa free. These are bpa free, and no numbers appear stamped into the plastic. This also has better air lock to keep contaminents and bacteria out. It is great for clearing your freezer of frozen fruit.

Why We Like This:

Max fill line clearly visible makes for easy use
You will be able to clearly see when the gasses stop passing through
Purpose of use is great used in fermented foods
Made of plastic but nice looking clear think they will do a nice job

Best For fermenter lid: ONEBOM CO2 Airlock

Buy on Amazon

These airlocks are perfect for fermenting food with the mason jar. The twin bubble airlock and the plug or cap acts as a seal so that gasses produced during fermentation can escape through the airlock while keeping the wort inside the carboy sealed from foriegn bacteria. The grommets insert easily into a 1/2" drilled hole and once the airlock is placed in the grommet there is no co2 leaking from around the grommet or where the airlock enters the grommet. There is a dust cover on each airlock.

The design is very good.

Why We Like This:

Very nice plastic feel to them too
You can see clearly when you ferment vegetables or beer
Solid plastic, transparent body easy to see the fermentation process
Cover the lid to prevent the fruit flies from falling

Best For kombucha: box Brew kits CO2 Airlock

Buy on Amazon

The box brew kits co2 airlock gives the top-tier airlock a run for their money by offering flagship specs at a much more affordable price. When you need more than a couple, this is a very economical way to go. It includes 5 airlocks and 5 stoppers. It is used for brewing alcoholic beverages like beer and wines and fruit wines etc. The main body is about 1.5" wide by 3" tall and the stem is roughly 1/2" by 1. The airlock by itself is 4 3/4 inches high. The center piece will fall out so be careful when sanitizing or losing one to the sink drain. The plastic corks are so slick they slide up and out of the bottles. It is great for this year's wine fermentation.

Why We Like This:

Super handy, comes with nice rubber corks and is a solid product
Held sanitizing solution for a month without needing to refill
Very nice to have rubber stoppers included, and a exceptional value

Best For larger carboy: Fermtech CO2 Airlock

Buy on Amazon

If you are looking for a suitable airlock for your regular usage, you cannot go wrong with the fermtech co2 airlock. These are perfectly standard fermenting air locks. In all of these types of stoppers, the design is solid, it works, and it's sturdy. It fits any standard airlock bung. It fits the bottles and can be heavily-crammed in so that it seals, but one would think a slightly softer material would seal and hold better.

The airlocks are great, they work just like you'd expect and are easy to handle. It is made of plastic, somewhat easy to clean.

Why We Like This:

Good quality airlocks, and good stoppers for use on 1-gallon plastic apple juice bottles
You don't have to worry about dropping and breaking them
Good brand reputation

Best For The hobby brewer: Brewland CO2 Airlock

Buy on Amazon

Next on the list, we've got yet another airlock that manages to win our hearts. It's the brewland co2 airlock and it's widely considered as one of the best convenient airlock you can buy. This bubble airlock is simple to use, you can dry out the stopper and the inside neck of fermenter to prevent slipping, and fill up the airlock to the fill line with liquid. It is perfect for the hobby brewer and works great. It is ideal for making home brew beer, wine, and perfect to suit homemade mead, sauerkraut, kimchi, kombucha, pickles, grape juice and so on.

These are well made and sturdy enough that they should stand up to routine use. They come with small grommets for a bucket and with corks for a jar. The airlocks are great and the rubber/silicone. It is easy to take apartand clean.

Why We Like This:

Can be pushed right into the carboy, unless you're really careful
Prompt arrival, strong construction, plastic not fragile
Good product for fermentation of mead
Perfect suit homemade mead, sauerkraut, kimchi, kombucha, pickles, grape juice

Best For Mason jar: Dbgogo CO2 Airlock

Buy on Amazon

The dbgogo co2 airlock's material feels more premium than its price would suggest.

Why We Like This:

Easy to use and brewing thermometer strip
Get more joys in beer brewing and enjoy your fresh beer
New and hot release