Input lever
Brewer & Filter Setup
Wheel face
Upright / inverted orientation
Whether the AeroPress is brewed upright or inverted.
AeroPress Wheel Variable
Air gap
Brewer & Filter Setup · Input lever
The volume of trapped air in the brewer.
Input lever
Brewer & Filter Setup
Wheel face
AeroPress-specific
Competition-relevant
Competition practice
Inferred
Definition
Air gap is the intentional or unintentional volume of air left in the AeroPress before pressing.
Why It Matters
Air changes pressure behavior, flip handling, and the consistency of separation.
Page Context
Air gap is part of the Brew Supply AeroPress Wheel and helps brewers describe the volume of trapped air in the brewer.
Related variables
Input lever
Brewer & Filter Setup
Detail panel
Chamber fill level
How full the chamber is during brewing.
Input lever
Brewer & Filter Setup
Detail panel
Plunger insertion depth
How far the plunger is inserted before brewing.
Input lever
Brewer & Filter Setup
Detail panel
Air expulsion
Deliberately pushing out excess air before pressing.
Input lever
Brewer & Filter Setup
Wheel face
Seal quality
How well the plunger and chamber seal together.
Input lever
Brewer & Filter Setup
Wheel face
Cap type
The cap used on the AeroPress.
Affected outcomes
Measured metric
Cup Outcome
Wheel face
Beverage TDS
Measured total dissolved solids in the served beverage.
Calculated metric
Cup Outcome
Wheel face
Extraction Yield
Calculated percentage of coffee mass extracted.
Measured metric
Cup Outcome
Wheel face
Beverage Yield
The liquid beverage mass collected or served.
Cup outcome
Cup Outcome
Wheel face
Aroma
The smell of the brewed coffee.