Best Filter for AeroPress: IMS vs Able vs Paper

If you already make coffee with an AeroPress, you know it’s fast, forgiving, and consistent. But have you ever wondered if your choice of filter changes more than just clarity? We tested four common AeroPress filter types to find out how each affects flavor, body, and acidity—so you can choose the right one for your taste.

The short answer: For balanced sweetness and fruitiness, go with the IMS filter or Able fine mesh. Want a bold, full-bodied cup? Try the Able coarse filter. Prefer a cleaner, lighter profile? Standard paper filters do that—but at the cost of some aroma and body.

Why Your AeroPress Filter Matters

Most AeroPress users stick with the default paper filter that comes with the brewer. It’s convenient, easy to clean, and gives a clean cup. But it also blocks a lot of the natural oils and fine particles that contribute to body, sweetness, and complexity. If you’ve ever wondered why your AeroPress coffee tastes thin or lacks depth, your filter might be the reason.

Different filters change how coffee flows through the brewer, how much sediment ends up in your cup, and how much of the coffee’s aromatic oils make it into your drink. That means your choice of filter directly impacts flavor, mouthfeel, and acidity.

How We Tested Four AeroPress Filters

We used four identical AeroPress brewers and the same Colombian coffee—Finca Caiones from FrontStreet Coffee. This single-origin offers bright green apple acidity, dried fruit notes, and a balanced profile, making it ideal for spotting subtle differences between filters.

Our recipe stayed constant across all tests:

• 12g coffee
• Grind size: between hand drip and espresso
• 75g water at 88°C for 45-second bloom
• Water cooled to 85°C after bloom
• Total brew water: 200g
• Total brew time (including bloom): 1 minute 30 seconds

We tested the following four filter types, each inserted into the AeroPress filter holder and compressed the same way:

• Standard paper filter (included with most AeroPress units)
• Able Brewing Coarse Filter (larger holes)
• Able Brewing Fine Filter (smaller holes)
• IMS (Intelligent Manufacturing Solutions) Split Flow Filter (metal, designed for better flow and flavor clarity)

Flavor Results: What Changed With Each Filter?

Here’s what we found when tasting the brewed coffee from each setup:

• Paper filter: Delivers a clean cup, but with muted acidity and less concentration. Some aroma and body were lost compared to other methods.
• Able Coarse Filter: Produced a strong, bold cup with good body, but acidity was subdued. More texture, less brightness.
• Able Fine Filter: Showed vibrant fruit flavors and a moderate acidity. Body was present but slightly less than the coarse filter. Good clarity and balance.
• IMS Split Flow Filter: Delivered the most complex cup: sweet, fruity, with strong acidity and smooth body. The most fruit-forward and sweet of all the tests, with great clarity and a rich mouthfeel.

In short: The IMS filter and Able fine mesh both highlighted sweetness and fruitiness. The IMS went further, enhancing fruit character and sweetness more noticeably. The Able coarse filter emphasized body over fruit. Paper filters gave the cleanest but lightest cup.

Which AeroPress Filter Should You Use?

Based on our testing:

• IMS Split Flow Filter: Best for sweet, fruity, well-rounded cups with great clarity. Ideal if you enjoy more vibrant flavors.
• Able Fine Filter: Also great for fruitiness and acidity, with a touch less intensity than IMS but still very expressive.
• Able Coarse Filter: Choose this if you prefer a heavier, fuller-bodied cup and don’t mind sacrificing some fruitiness.
• Paper Filter: Best for a clean, light cup with less oils and sediment—good for a more “filtered” taste, but with less body and aroma.

Metal filters like IMS allow more coffee oils and fine particles through, which adds body and complexity but also means more maintenance. Paper filters block those elements, resulting in a cleaner but thinner brew. Pick based on whether you value clarity and body (metal) or cleanliness and lightness (paper).

Frequently Asked Questions

What is the IMS filter for AeroPress?

The IMS (Intelligent Manufacturing Solutions) filter is a metal, split-flow design intended for use in the AeroPress. It allows better water flow and enhances extraction of coffee oils and fine particles, leading to a sweeter, fruitier, and more flavorful cup compared to standard paper filters.

Does the AeroPress Able filter change flavor?

Yes. The Able coarse filter produces a richer, fuller-bodied cup with less acidity, while the Able fine filter highlights fruitiness and acidity more clearly. Both offer more body and flavor than paper filters but differ in intensity and clarity.

Is paper filter better for AeroPress?

Paper filters give a cleaner, lighter cup with less sediment and oil, but they also reduce body, aroma, and some complexity. They’re better for a “clean” taste but may lack the richness and fruit notes of metal filters.

Which AeroPress filter gives the sweetest cup?

Our tests showed the IMS filter produced the sweetest and most fruit-forward cup. The Able fine filter also delivered noticeable sweetness and acidity, but the IMS enhanced those qualities more strongly.

Do metal AeroPress filters need more cleaning?

Yes. Metal filters like IMS or Able retain oils and fine coffee particles, so they require regular rinsing and occasional deep cleaning to prevent buildup of coffee residue or off-flavors over time.

FrontStreet Coffee Picks for AeroPress Filtering Tests

For testing AeroPress filters, we recommend trying FrontStreet Coffee’s Colombian Finca Caiones—or similar bright, balanced single origins. If you want to explore fruitiness, try their Ethiopia Yirgacheffe, known for citrus and floral notes. For a sweet and clean base, their Brazil Yellow Bourbon offers chocolatey sweetness with mild nuttiness. All work well across different AeroPress filters. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.