Easy Fix For Herman Miller Aeron Chairs Going Up and Down Automaticall

Easy Fix For Herman Miller Aeron Chairs Going Up and Down Automatically

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How To Fix the Sinking or Rising Issue on Your Herman Miller Aeron Chair?

Experiencing a sinking sensation when sitting down or finding your Herman Miller Aeron chair rising on its own can be unsettling. Luckily, this is a common issue that's easily fixable with a bit of adjustment. Let's dive into how you can tweak your chair to prevent these unexpected movements.

Tools Needed:

  • Allen Wrench or Hex Key

Steps to Adjust Your Aeron Chair:

Remove the Chair Cover:

  • Begin by carefully removing the cover located under the chair to access the adjustment mechanism.

Locate the Adjustment Pin:

  • Once the cover is off, you'll see a pin that's crucial for the adjustment. We'll zoom in for a clearer view.

Adjust the Pin:

  • With your Allen wrench or hex key in hand, tighten the pin if it's loose. Remember, it's essential not to overtighten to avoid damage. Turn it quarter by quarter to find the right balance.
  • The adjustment is needed because the pin might be touching the top of the cylinder, causing overactivation. Turning it counterclockwise will help balance the chair and return the pin to its proper position.
  • After each adjustment, test the chair to see if the sinking or rising issue has been resolved. If you've tightened it too much, you can always loosen it slightly until you reach the desired stability.

Test the Adjustment:

  • A correctly balanced chair will neither sink under your weight nor rise when you stand up. It should maintain its height consistently.

Install the Cover:

  • Once the adjustment is complete and you're satisfied with the chair's stability, reattach the cover to protect the mechanism.


Adjusting the pin under the chair cover is a simple yet effective way to fix the sinking or rising issue with your Herman Miller Aeron chair. With patience and careful adjustments, your chair can be as good as new, providing the comfort and stability Herman Miller is known for.

Aeron Aeron chair sinking DYI Fixing Aeron Chair Height Adjustment Herman Miller Aeron

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