The chamber fan is extremely loud, especially when running at max for PLA and other filaments. What about replacing it with a 120mm Noctua fan? I am aware that the stock fan is 92mm, but the NF-A9x25 pushes less than 60CFM, making it unfeasible. There could be enough space for a 120mm fan, and if there is then people could 3D print a bracket to mount it. The Noctua fan pushes ~110CFM at a noise level of around 44dB, which I think would be a substantial upgrade. Has anybody tried it?
link: NF-F12 iPPC 24V 3000
The problem is that the Noctua fan is an axial fan and the chamber fan is a centrifugal fan.
A good breakdown of the differences can be found here.
Axial Fans vs. Centrifugal Fans
I was just looking into this recently haha.
Like for pc’s @JonRaymond is right. We call them “blower fans” and sadly…they are the most noisy annoying things on the planet and server world bah.
Noct’s are the best I agree I did my CR10 here with the full swap decades ago and custom made a new hotend cooler with them still rock solid so I wanted to do something similar as you were thinking with the mini here.
https://noctua.at/en/products/fan
Sadly blowers suck…and noct doesn’t make any as per their list above. I’ll come back and keep this thread alive as I research newer style that might fit.
Please do the same if anyone comes across good ones they think might work - I know I am willing to DIY here!
EDIT: I’m aware I’m in the P1 here. I’m willing to diy swap any fans we might find that might fit !
I believe the P1S chamber fan is a 92x25mm axial fan?
Apologies, I thought you were referring to the AUX fan.
There is already a thread about this, but it is around 10 months old and I thought it would be beneficial to create a new thread with a more specific focus.
Anyway, setting all that aside, I think I will open up the back panel of the printer to see if there is enough space after printing out an outline of the 120x120mm footprint. One thing though, I believe the NF-F12 iPPC 24V 3000 PWM has a lower max RPM than the stock chamber exhaust fan, so I’m not sure how the PWM signal will respond to the slower tach signal.
Hopefully I can get some research done this afternoon.
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Yeah it might affect the fan too much would need to actually get one splice it and take readings while it’s operating to really see.
I’ll look locally here at our electronics superstar store (addison eletronique. hands down zee best place ha) and see if they have any alt versions or similar when I pass by probably this friday coming. If I can find one I’ll splice to check voltages sure! I know again I’m not p1 world but across the family not much should change for fans n stuff
But really, the fan you linked has a fantastic new quality → IP67
Dude, we can print underwater…sweet! 
I think there was a video on YouTube where somebody made their Prusa (knockoff??) waterproof and then printed in a swimming pool
Best part about the fan is that it’s 24V so you don’t have to convert the PWM and so on, and you get lower current usage
so in theory I could power it off my pool robot…interesting! 
EDIT: after 500 yt unskippable ads <_< I found it. thy really are screwing with adblockers now bah.
