How-to · Brewer cleaning
How to clean AeroPress, pour over, and French press brewers
Manual brewers fall into two camps for cleaning purposes. Immersion brewers (AeroPress, French press, Clever Dripper) steep coffee for several minutes, so oils and fines coat the inside of the chamber and the filter housing. Percolation brewers (Hario V60, Chemex, Kalita Wave) only see water for 2-4 minutes and most of the residue stays in the paper filter — but the cone, glass, and any reusable mesh accumulate oil and stain.
The result: immersion brewers need a more thorough rinse after each use. Percolation brewers can survive a quick rinse most days, then a deeper monthly clean. Neither needs descaling (no boiler), neither needs special detergent for normal use.
What you'll need
-
Hot water (boiler kettle is fine)
No detergent for daily cleaning — coffee oils rinse off with hot water.
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Mild, fragrance-free dish soap (for monthly deep clean only)
Strongly scented soaps leave residue that you will taste in the next brew. Skip dish soap day-to-day and reserve it for monthly cleaning.
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Soft-bristle brush or non-scratch sponge
Avoid steel wool on plastic AeroPress chambers — micro-scratches collect oils and become hard to clean later.
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Cafiza or oxygen-cleaner powder (monthly, for stained glass / mesh)
Cafiza is overkill for daily cleaning but works well for a monthly soak on Chemex carafes and reusable mesh filters that have stained.
Step-by-step
- Step 1
Daily — immersion brewers (AeroPress, French press)
AeroPress: Eject the puck into the trash or compost, rinse the chamber and plunger under hot tap water. Wipe the rubber seal with a damp cloth — coffee oils sit on the seal and turn rancid if left for days. Air-dry inverted.
French press: Dump spent grounds (do not pour down the sink — they clog drains). Disassemble the plunger fully (mesh filter, spiral plate, cross plate) and rinse each part separately. The mesh traps the most oil; a soft brush helps. Reassemble only when fully dry.
- Step 2
Daily — percolation brewers (V60, Chemex, Kalita)
Lift the wet filter cone and discard the paper filter with grounds (compost works for unbleached filters). Rinse the dripper and the receiving carafe with hot water. Wipe dry with a microfiber if you store it on display — air-drying water spots on glass Chemex is a cosmetic issue, not a brewing one.
If you use a reusable metal mesh filter (Able Kone, etc.), give it a quick brush under running water. Fines lodge in the mesh and slow flow rates over time.
- Step 3
Weekly — full disassembly and soap
Once a week, take everything apart and wash with a small drop of mild dish soap and a soft brush. Rinse 3+ times to clear all soap residue. Strong-smelling soap is the most common reason a clean brewer still tastes off — the soap smell transfers to the brew.
For AeroPress: pay attention to the rubber seal. If it has hardened, cracked, or stained dark, replace it ($5 from AeroPress directly or generic on Amazon). A stiff seal causes pressure leaks and uneven extraction.
- Step 4
Monthly — deep clean for glass and mesh
For stained Chemex carafes or yellowed mesh filters: dissolve 1 tsp Cafiza or oxygen-cleaner powder in 500 ml hot water, pour into the carafe / soak the mesh for 15-20 minutes. The brown stain lifts off without scrubbing. Rinse 3-4 times with clean water until no powder residue remains.
This is the only step where a dedicated coffee cleaner earns its place on a manual brewer. Day-to-day, plain hot water is enough.
- Step 5
Storage between uses
Store fully dry. Damp brewers — especially the AeroPress chamber pressed against its plunger and the inside of a sealed French press — grow mildew within a few days. Air-dry on a rack or upside down on a clean towel. For French presses, leave the plunger out of the carafe overnight.
Common mistakes to avoid
- Putting the AeroPress rubber seal in a dishwasher — high heat and detergent harden the rubber and you will need a replacement seal within a year.
- Soaking the Chemex collar (wood + leather tie) — the wood swells and the leather darkens. Detach the collar before any soak.
- Using scented or "antibacterial" dish soap on any brewer. The fragrance transfers to the next brew.
- Storing a French press fully assembled while still damp. Mildew grows in the spiral filter plate within 3-5 days in a humid kitchen.
Frequently Asked Questions
Can I put my AeroPress / V60 / Chemex in the dishwasher?
The plastic AeroPress is rated dishwasher-safe top rack, but the rubber seal degrades faster with dishwasher heat — hand-wash extends its life by 2-3x. Plastic V60s are dishwasher-safe. Glass and ceramic V60s and Chemex carafes (with the collar removed) are dishwasher-safe. Hand wash extends life of all of them.
My French press metal mesh is stained brown. Is that bad?
Cosmetic, not functional. The stain is coffee oil oxidation and does not affect taste if the mesh is clean of grounds. If it bothers you, soak the disassembled mesh in Cafiza solution for 20 minutes — it lifts off.
Does an AeroPress need to be cleaned differently from a French press?
Yes — the AeroPress has a rubber plunger seal that hardens with heat and detergent, so hand-wash it gently with cool-to-warm water. The French press has a stainless mesh that tolerates hot water and brushes without issue. Both are immersion brewers but the materials differ.
How often should I replace the AeroPress rubber seal?
When it stops sealing — usually 1-3 years of daily use, sooner if dishwashed. Symptoms: water leaks past the plunger during press, or the seal feels brittle/cracked. Genuine AeroPress seals are $5; ignore the cheaper aftermarket ones, they harden faster.
Last reviewed: . We update this guide when the manufacturer publishes new maintenance documentation or when community consensus on best practice shifts.