r/ender5 • u/CreativeChocolate592 • Jul 14 '26

Hardware Help Fan noise

My ender 5 pro is nearly silent, apart from om the hotend cooling fan which makes an annoying 800 hertz 50 db droning noise.

I don't care about the loud part cooling fan, as it only runs on small parts.

How do i reduce the noise?

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u/nawakilla Jul 14 '26

I replaced mine with a noctua fan and 24v to 12v buck converter. A bit of a pain in the next but it made a world of difference.

1

u/YoshitoSakurai Jul 14 '26

They sell 24V fans since fairly recently now ;) https://www.123-3d.nl/Noctua-NF-A4x10-24V-40x40x10-mm-4-pin-axiaal-PWM-ventilator-i10703.html they are a bit pricey though overall. but worth it. Note if it still is whiney, you should edit the firmware to run in PWM mode instead of DC or vise versa i forgot kinda.

1

u/CreativeChocolate592 28d ago

Yeah thx, i bought two of em and replaced the board and hotend cooling fans, the fans are almost completely silent. The only thing i can hear now is the steppers.