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Chemex Funnex

Why Brew With The Chemex Funnex

Chemex Corporation's entry into the coffee dripper market, the Funnex hit the scene in 2020. This wasn't the company's first go at a dripper, though. A much sharper version of the Funnex can be found in a patent filed by Chemex inventor Dr. Peter Schlumbohm in 1957. Had the brewer made it past the patent, it theoretically could have beat out the Hario V60, which was in production at the time. In an alternate universe, café pour over bars are loaded with Funnexes.

The brewer is characterized by a double-walled design, the outer wall carrying that iconic Chemex shape we all swoon over and the inner wall being a 40° funnel ending in a single hole. The double wall helps retain heat, keeping the temperature of your brew more stable as it draws down. Shifts in temperature can lead to poor extraction and underwhelming, tasteless coffee.

The Funnex takes the same bonded half-moon filter as the 3-cup Chemex Classic. 20 - 30% thicker than competitors' filters, Chemex filters are specially formulated to remove more coffee oils, creating a cleaner cup and highlighting your coffee's delicate origin notes. Enough talk, though. Let's get into it.


We recommend measuring by weight instead of volume for the most accurate brew ratio.




20g (2 ½ tbsp)




340g (13 oz.)


3 mins.

A Chemex Funnex near a coffee book, a range server, a box filters, and a cup of coffee being stirred by two hands.



  1. Bloom 50g water in a slow, circular motion for 45 seconds.
  2. After 45 seconds, bring the total water all the way up to 340g and allow it to draw down completely.
  3. Your coffee should be ready by the 3-minute mark.

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