Ram-air setup and window vent for 1100w capable AI box

Reddit r/LocalLLaMA / 4/14/2026

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Key Points

  • A Reddit user describes a DIY cooling solution for a high-power (1100W-capable) local AI PC, aimed at preventing the office from becoming overheated.
  • The setup uses a ram-air style intake and a window vent design to expel most of the generated heat outside, claiming about 90% of the heat leaves through the window.
  • The user reports the cooling effectiveness is close to leaving the case open, while framing the approach as practical inspiration for others.
  • The post is shared as a peer-to-peer best practice for managing thermals in home or small-office environments running demanding local AI workloads.
Ram-air setup and window vent for 1100w capable AI box

So i have a very powerful setup here and i got tired of the office being a sauna.

Here is my solution and the cooling achieved is as effective as being open case.. about 90% of the heat makes it out the window.

Shared hoping that it serves as some inspiration to others. Cheers!

submitted by /u/mr_zerolith
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