Fermentation Airlocks

Keep your fermentation clean and controlled with Fermentation Airlocks from Craft a Brew. Designed for homebrewers, these essential tools prevent contamination and allow CO₂ to escape safely during fermentation.

Filter:

Price
The highest price is $3.79 Reset
From $
To
$

3 products

3 Piece Airlock
Regular price $2.50
3 Piece Airlock
The Hex - 3 Piece Airlock
The Hex - 3 Piece Airlock
Regular price $3.79
The Hex - 3 Piece Airlock
Twin Bubbler Airlock
Twin Bubbler Airlock
Regular price $2.50
Twin Bubbler Airlock

Fermentation Airlocks for Homebrewing

Every successful fermentation needs an airlock. Craft a Brew’s Fermentation Airlocks are designed to maintain a clean, controlled environment for your beer, wine, mead, or kombucha. These simple yet essential devices allow CO₂ to escape while preventing contaminants from entering your fermenter.

Whether you prefer the reliable 3-Piece Airlock or the sleek Hex 3-Piece Airlock, each option ensures a worry-free fermentation process. For traditionalists, the Twin Bubbler Airlock provides the same trusted protection in a classic design.

Top Fermentation Airlocks

  • 3-Piece Airlock – The go-to choice for reliable, visible fermentation activity and easy cleaning.
  • The Hex 3-Piece Airlock – Features a modern hex design with a tighter seal and smoother release of CO₂.
  • Twin Bubbler Airlock – A classic, low-maintenance design ideal for long-term fermentation.

Why You Need an Airlock

  • Prevents Contamination – Keeps airborne bacteria, mold, and oxygen out of your brew.
  • Releases CO₂ Safely – Allows fermentation gases to escape without exposing the liquid.
  • Easy to Clean – Simple disassembly for quick sanitation after every batch.
  • Universal Fit – Works with most fermentation lids and stoppers.

Related Brewing Accessories

Frequently Asked Questions

What does a fermentation airlock do?

An airlock releases CO₂ produced during fermentation while keeping contaminants and oxygen out of your fermenter.

Which airlock should I use?

Both 3-piece and twin bubbler airlocks work well. The 3-piece design is easier to clean, while the twin bubbler is more traditional and quieter.

How do I clean an airlock?

Disassemble the airlock and rinse with warm water. Sanitize with One Step No Rinse Cleanser before reusing.

Can I reuse fermentation airlocks?

Yes, airlocks are reusable. Clean and sanitize them after every batch for safe, consistent fermentation.

What liquid should I fill my airlock with?

Fill the airlock with water or a mild sanitizer solution such as One Step to create an effective barrier against contaminants.

Protect Your Brew with the Right Airlock

Reliable fermentation starts with the right tools. Choose from Craft a Brew’s Fermentation Airlocks for clean, controlled, and visible fermentation results.

Shop Fermentation Airlocks