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 7 picks. Our scores range from 7.2 to 8.6 out of 10.
- Best overall:Brewland 6 Packs 3 Piece Airlocks for Fermenting with #6 Stoppers and Grommets. Highest overall score in this guide at 8.6/10.
- Also great value:Molovee 3-Piece Airlock Fermentation Beer Wine Brewing Air Locks 3Pack with Silicone Grommets. Value score of 8/10, overall 7.8/10.
- Solid build:Craft A Brew The Hex 3 Piece Airlock for Home Brew Fermentation. Build and materials score of 8/10, overall 7.2/10.
- Feature-rich:3 Piece Airlock Set for Brewing Wine Making Kimchi (3 Airlock+3 Stoppers+6 Grommets). Features score of 8/10, overall 7.8/10.
Scores are our editorial assessment, not customer ratings. How we score
Brewland 6 Packs 3 Piece Airlocks for Fermenting with #6 Stoppers and Grommets
Brewland's 6 Packs of 3 Piece airlocks with #6 stoppers and grommets for fitting buckets and carboys.
Our score8.6/10Budget
Molovee 3-Piece Airlock Fermentation Beer Wine Brewing Air Locks 3Pack with Silicone Grommets
Molovee's 3Pack of 3-Piece airlocks with silicone grommets for beer and wine fermentation.
Our score7.8/10Budget
#1Brewland'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
#2Molovee'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
#3A 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
#4SocalHomeBrew'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
#5A 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
#6A 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
#7Craft A Brew's The Hex 3 Piece airlock, a distinctive hexagonal airlock for home brew fermentation.
Fit for the job 7/10 · Features and specs 7/10 · Build and materials 8/10 · Value 7/10
- + Hex shape resists rolling off the counter during cleaning
- + 3 Piece design comes apart for thorough sanitizing
- + Craft A Brew build matches its fermenter kits
- - Single airlock, so multiple fermenters need several purchases
- - Check whether stoppers or grommets are included before ordering
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 6 Packs 3 Piece Airlocks for...)
- No stoppers included, so carboy users need to buy bungs (Molovee 3-Piece Airlock Fermentation Beer...)
- Check the stopper size fits your jars and carboys before ordering (3 Piece Airlock Set for Brewing Wine Making...)
- No grommets or stoppers included in the pack (SocalHomeBrew Plastic 3 Piece Airlock (Pack...)
- No drilled stoppers, so glass carboys need separate bungs (3 Piece Airlock 4 Pack with Grommets for...)
- Check the stopper size matches your carboy neck before ordering (3-Piece Airlock 4 Pack Brewing & Fermentation...)
Frequently asked questions
›What is the best choice among airlocks for homebrewing (2026)?
Brewland 6 Packs 3 Piece Airlocks for Fermenting with #6 Stoppers and Grommets 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 Fermentation Beer Wine Brewing Air Locks 3Pack with Silicone 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 $ 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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