NF-A4x10 24V PWM, 40mm Quiet Fan for 3D printers and other Applications, 4-Pin, 24V Version (40x10mm, Brown)

I recently upgraded my Ender 5 S1 3D printer by replacing the stock fan with the Noctua NF-A4x10 24V PWM 40mm Fan, and the improvement has been remarkable. ✔️ What I Appreciate: Superior Quietness: The Noctua fan operates with minimal noise, significantly quieter than the original stock fan. This enhancement has made my printing environment much more pleasant. Efficient Cooling Performance: Despite its quiet operation, the fan provides excellent airflow, effectively maintaining optimal temperatures during extended printing sessions. High-Quality Build: The fan's construction is robust and durable, reflecting Noctua's reputation for premium quality components. PWM Control: The PWM feature allows for precise speed control, enabling the fan to adjust its performance based on the printer's cooling needs, which contributes to both efficiency and longevity. ❌ Areas for Improvement: Installation Considerations: While the fan itself is top-notch, users should ensure compatibility with their specific printer model. In some cases, slight modifications or additional adapters may be necessary for installation. 💡 Final Thoughts: The Noctua NF-A4x10 24V PWM 40mm Fan is an outstanding upgrade for the Ender 5 S1 3D printer. Its quiet operation, efficient cooling, and high-quality construction make it a worthwhile investment for those looking to enhance their 3D printing experience. ✔ Best For: 3D printing enthusiasts seeking a quieter and more efficient cooling solution for their printers. ❌ Not Ideal For: Users who prefer plug-and-play solutions without any need for modifications. 👉 Overall: 5/5 – An excellent fan that delivers on performance and quietness, significantly improving the 3D printing environment.

I’ve been thoroughly impressed with this fan – it’s everything you’d expect from Noctua. It’s exceptionally quiet to the point of being nearly inaudible, even when running continuously. I’m using it to cool a Raspberry Pi 4 setup, and it’s done a brilliant job keeping temperatures in check without introducing any noticeable noise. The build quality feels premium, and installation was straightforward with the 4-pin PWM connector. Although compact at just 40mm, it punches well above its size in terms of airflow and thermal management. Perfect for compact builds or custom projects where noise is a concern. Highly recommended if you need reliable, quiet cooling in a 24V system

bought to replace the hotend and mainboard fans in my ender 3. after doing so (although the PWM goes to complete waste here), it runs way quieter, near silent (at full speed!) and the airflow is great. very very happy. the included accessory package is very premium compared to most fans, the anti vibration pads are nice, the build quality is clearly good.

purchased this Noctua NF-A4x10, and I am extremely satisfied with its performance. The fan operates quietly while delivering impressive airflow, making it perfect for my enclosed project. The PWM control allows for efficient speed adjustments, keeping noise levels down during low-demand periods. Installation was straightforward, and the build quality feels top-notch, typical of Noctua products. If you're looking for a reliable, quiet fan for tight spaces, I highly recommend this one!

Beautiful colour scheme. Cooling performance is fantastic, especially since it's so quiet. Used these in my 3d printer to make it quieter and works fantastically. Always a pleasure using Noctua (when it doesn't break the bank lol)

There is something about Notcua fans that scream quality to me. This one is going in my Ender 3 as a hotend cooling fan, as I'm not sure if the existing one is working right or not. Although I'm not using the PWM, or Tacho Signals at the moment, there is room to be able to add something into the mix to allow me to see what the fans RPM is, or even to control the speed - though I'm unlikely to run at anything short of 100%. Actually, I love that the fan is extremely quiet at full speed.

Not as quiet as I expected it to be

Switched out the hotend fan and the casing fan. Both made huge improvements to the sound of the printer. Came with everything I needed for the switch from the default fan and shroud, including everything you need for the wiring. Absolutely recommend to anyone with a printer that these fit.