Best Airlocks for Homebrewing (2026)
Updated How we research
An airlock is the small valve that lets fermentation CO2 escape while blocking air and contaminants from reaching your beer. The two common styles are the three-piece airlock, which is easy to disassemble and clean, and the S-shaped bubbler, which is simple and lets you watch fermentation activity at a glance. Both work well when filled to the line with sanitizer or water. The main fit consideration is the stopper or grommet, which must seal snugly in your fermenter lid or carboy neck. Every brewer who ferments in a sealed vessel needs an airlock, so it is truly universal gear. Three-piece designs are easier to clean and refill, which appeals to brewers who like to inspect parts, while S-locks are foolproof for beginners. Keep a couple of spares, since they are inexpensive and easy to misplace. Match the airlock to your stopper size, top it off with sanitizer, and remember that bubble rate indicates activity but is not a precise gauge, so trust your hydrometer for real fermentation progress.
The short version
We compared 8 picks. Our scores range from 7.6 to 8.6 out of 10.
- Best overall:Brewland 3-Piece Airlocks with Stoppers, 6 Pack. Highest overall score in this guide at 8.6/10.
- Also great value:Fastrack 3 Piece Airlock for Fermentation Hydrolocks for Fermenting Wine and Beer with Drilled Rubber Stopper Durable Carboy Bung with transparent Airlock Set used for Fermentation Set of 3. Value score of 9/10, overall 7.8/10.
- Solid build:Molovee 3-Piece Airlock Set with Grommets. Build and materials score of 7/10, overall 7.8/10.
- Feature-rich:Airlock Set for Brewing, 3 Airlocks, 3 Stoppers. Features score of 8/10, overall 7.8/10.
Scores are our editorial assessment, not customer ratings. How we score
As an Amazon Associate we earn from qualifying purchases. This does not change our picks. Affiliate disclosure
Brewland 3-Piece Airlocks with Stoppers, 6 Pack
Brewland's 6 Packs of 3 Piece airlocks with #6 stoppers and grommets for fitting buckets and carboys.
Molovee 3-Piece Airlock Set with Grommets
Molovee's 3Pack of 3-Piece airlocks with silicone grommets for beer and wine fermentation.
- 1.Brewland 3-Piece Airlocks with Stoppers, 6 Pack8.6/10See on AmazonCheck price
- 2.Molovee 3-Piece Airlock Set with Grommets7.8/10See on AmazonCheck price
- 3.Airlock Set for Brewing, 3 Airlocks, 3 Stoppers7.8/10See on AmazonCheck price
- 4.Fastrack 3 Piece Airlock for Fermentation Hydrolocks for Fermenting Wine and Beer with Drilled Rubber Stopper Durable Carboy Bung with transparent Airlock Set used for Fermentation Set of 37.8/10See on AmazonCheck price
- 5.SocalHomeBrew Plastic 3 Piece Airlock, Pack of 37.6/10See on AmazonCheck price
- 6.Airlock and Grommet Set, 4 Pack7.6/10See on AmazonCheck price
- 7.Brewing Airlocks with Drilled Stopper, 4 Pack7.6/10See on AmazonCheck price
- 8.Homebrew Airlocks with Cap, 4 Pieces7.6/10See on AmazonCheck price
Brewland's 6 Packs of 3 Piece airlocks with #6 stoppers and grommets for fitting buckets and carboys.
Fit for the job 9/10 · Features and specs 9/10 · Build and materials 7/10 · Value 9/10
- + 6 Packs gives airlocks for multiple fermenters plus spares
- + Includes #6 stoppers and grommets for both carboys and bucket lids
- + 3 Piece design comes apart fully for easy cleaning
- - #6 stoppers do not fit wider carboy necks that need larger bungs
- - 3 Piece airlocks can let sanitizer suck back during cold crashes
Molovee's 3Pack of 3-Piece airlocks with silicone grommets for beer and wine fermentation.
Fit for the job 8/10 · Features and specs 8/10 · Build and materials 7/10 · Value 8/10
- + Silicone grommets seal well on bucket lids and stay flexible
- + 3-Piece airlocks are easy to disassemble and sanitize
- + 3Pack covers a few fermenters for small batch brewers
- - No stoppers included, so carboy users need to buy bungs
- - Thin plastic parts can crack if dropped on a hard floor
A 3 Piece airlock set with 3 Airlock, 3 Stoppers and 6 Grommets for brewing, winemaking and kimchi.
Fit for the job 8/10 · Features and specs 8/10 · Build and materials 7/10 · Value 8/10
- + 3 Stoppers and 6 Grommets cover jars, carboys and bucket lids
- + Useful for kimchi and vegetable ferments as well as beer and wine
- + Full set means fewer trips for missing fittings
- - Check the stopper size fits your jars and carboys before ordering
- - Generic airlocks may have looser caps than brand name ones
FastRack three-piece transparent airlocks, a set of 3 sold with drilled rubber stoppers for jugs and carboys.
Fit for the job 8/10 · Features and specs 7/10 · Build and materials 7/10 · Value 9/10
- + The set of 3 includes drilled rubber stoppers, so each airlock is ready to fit a jug or carboy.
- + A transparent bubbler style lets you see gas escaping through the fermentation.
- + It is made of food grade materials, and the listing says it is stronger than typical airlocks.
- - The stopper size is not clear in the listing, so check it against your fermenter opening.
- - A bubbler airlock needs regular topping up with water or sanitizer.
SocalHomeBrew's Pack of 3 plastic 3 Piece airlocks, a basic airlock refill for homebrew fermenters.
Fit for the job 8/10 · Features and specs 7/10 · Build and materials 7/10 · Value 8/10
- + Pack of 3 provides spares for multiple fermenters
- + Simple 3 Piece design is easy to fill and clean
- + Standard size fits common grommets and drilled stoppers
- - No grommets or stoppers included in the pack
- - Cap can pop off during very vigorous fermentation
A 4 Pack of 3 Piece airlocks with grommets for brewing, wine making and kimchi fermentation.
Fit for the job 8/10 · Features and specs 7/10 · Build and materials 7/10 · Value 8/10
- + 4 Pack keeps spare airlocks on hand for several fermenters
- + Grommets included for sealing bucket lids and mason jar lids
- + Works for vegetable ferments as well as beer and wine
- - No drilled stoppers, so glass carboys need separate bungs
- - Plastic caps can warp if washed in very hot water
A 3-Piece airlock 4 Pack with drilled rubber stoppers for brewing and fermentation in carboys and jugs.
Fit for the job 8/10 · Features and specs 7/10 · Build and materials 7/10 · Value 8/10
- + Drilled rubber stoppers fit airlocks straight into carboy necks
- + 4 Pack covers several fermenters at once
- + Rubber stoppers grip glass well for a tight seal
- - Check the stopper size matches your carboy neck before ordering
- - Rubber can pick up odors from strong ferments over time
A 4 Piece set of twin bubble S-style airlocks with caps and grommets for homebrew fermenters.
Fit for the job 8/10 · Features and specs 7/10 · Build and materials 7/10 · Value 8/10
- + Twin bubble design resists suck-back when temperatures drop
- + Caps keep dust and fruit flies out of the airlock liquid
- + Grommets included for sealing bucket lids
- - Twin bubble shape is harder to clean inside than 3 piece types
- - Stoppers for glass carboys are not included in the set
Before you buy: trade-offs we flagged
No pick is perfect. These are the main compromises we noted for the top products in this guide, so you can check they will not matter for you.
- #6 stoppers do not fit wider carboy necks that need larger bungs (Brewland 3-Piece Airlocks with Stoppers, 6 Pack)
- No stoppers included, so carboy users need to buy bungs (Molovee 3-Piece Airlock Set with Grommets)
- Check the stopper size fits your jars and carboys before ordering (Airlock Set for Brewing, 3 Airlocks, 3 Stoppers)
- The stopper size is not clear in the listing, so check it against your fermenter opening. (Fastrack 3 Piece Airlock for Fermentation...)
- No grommets or stoppers included in the pack (SocalHomeBrew Plastic 3 Piece Airlock, Pack of 3)
- No drilled stoppers, so glass carboys need separate bungs (Airlock and Grommet Set, 4 Pack)
Frequently asked questions
›What is the best choice among airlocks for homebrewing (2026)?
Brewland 3-Piece Airlocks with Stoppers, 6 Pack is our top overall pick. Brewland's 6 Packs of 3 Piece airlocks with #6 stoppers and grommets for fitting buckets and carboys. It earns our score of 8.6/10, based on fit for the job, features, build and value.
›What is a good budget option?
Molovee 3-Piece Airlock Set with Grommets is the strongest low-cost pick in this guide. Molovee's 3Pack of 3-Piece airlocks with silicone grommets for beer and wine fermentation.
›How much should I expect to spend?
Picks in this guide span See on Amazon price bands (roughly: $ = under $30, $$ = $30 to $100, $$$ = over $100). We never display exact prices because they change constantly, so the buttons above always show Amazon's current price.
›How were these products chosen?
We shortlist products that fit the job this guide solves and compare their published specifications, such as size, capacity, materials and what is included. Each pick gets an editorial score out of 10 for fit, features, build and value, and we write the pros and cons from those details. Our score is not an Amazon customer rating. We earn a commission if you buy through our links, which never affects the ranking.
Home Brew Craft independently selects every product; we may earn a commission from links above.
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