Stay cool all night without spending hundreds on high-end cooling systems. This 3D printed Bed Fan Cooling System turns a basic Amazon Basics fan into a powerful under-the-sheets airflow solution—perfect for hot sleepers or warm summer nights.

The vertical duct system channels air from the fan directly under your sheets, delivering a consistent, cooling breeze right where you need it most. No more bulky machines, noisy compressors, or overpriced gadgets.

VERSION 2.0 IS HERE!

Why this is better:

• Budget-Friendly: Existing systems cost around $200-$500+ USD. This system only uses 700g of filament and a fan that is under $20 USD.
• DIY and Customizable: Fully 3D printable—adapt it to your bed setup.
• Quiet & Effective: Provides under-the-cover airflow without blasting your face.

This is a simple, practical alternative to expensive bed cooling systems—and it works.

UPDATE

• 6.16.25: 🚀 Version 2 is officially complete! Download here!
  I spent the weekend fine-tuning the design and running tests, and honestly — it works almost too good. Bed Rocket V2 will be available on 6.17.25! Huge thanks to everyone for the boosts, feedback, and support — you’ve helped take this project to the next level!
• 6.12.25: Version 1.1 is now available for download! Please use print profile for best results.
• 6.11.25: Top Funnel 1.0 was causing significant dynamic pressure loss between the fan and the exit. Version 1.1 delivers a 34% airflow improvement with minimal pressure drop. I’m currently fine-tuning the design and will have the updated file available for download soon. Early tests on Version 2.0 are even more exciting — delivering a massive 127% increase in airflow compared to the original 1.0!
• 6.10.25: Based on user feedback I am test printing an improved top vent to increase airflow. Should be available by end of today.

UPGRADE:

Instead of printing the tubes, you can substitute them for 4" PVC pipe or a 4" dust collector hose with key hose clamps. Will save printing time and filament, and may increase airflow.

What is needed:

Any color PLA

Amazon Basic Fan

Assembly Video

Assembly Instructions

1. Attach the Funnel
   Snap the side hooks onto the funnel and securely latch it onto your Amazon Basics fan.
2. Position the Fan
   Place the fan at the foot of your bed, facing upward.
3. Add the Tubes & Couplings
   Connect the modular tubes and couplings to match the height of your bed. Multiple tube sizes are included for easy adjustment.
4. Install the Vent
   Place the vent on top of the tube stack. Drape your bedsheet over the vent so the airflow stays under the covers.
5. Power On & Relax
   Turn on the fan, hop in bed, and enjoy a cool, refreshing night’s sleep!

Commercial License:

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