SKU: 83729890070

Prusa MK3/S Hot End Fan - Type A Noctua NF-A4x10-5V 40x40x10mm 5V Fan

$33.26 $36.95
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Ships within 48 hours · Estimated delivery Sep 22 - Sep 27

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Description

Prusa MK3/S Hot End Fan - Type A Noctua NF-A4x10-5V 40x40x10mm 5V FanPrusa switches between two different 5v fans on their Prusa MK3S Kits. Type B Delta Fan Type A Noctua Fan NF A4x10 5V (This Listing) We also sell the Noctua fan in the Noctua NF A4x10 5V Kit direct from Noctua if these are both out of stock however you will need to solder the wires as it does not come with correct length wire connector. Noctua NF A4x10 5V 40mm Fan Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and an

Prusa switches between two different 5v fans on their Prusa MK3S Kits.

Type B Delta Fan
Type A Noctua Fan NF-A4x10-5V (This Listing)
We also sell the Noctua fan in the Noctua NF-A4x10-5V Kit direct from Noctua if these are both out of stock however you will need to solder the wires as it does not come with correct length wire/connector.

Noctua NF-A4x10 5V 40mm Fan

Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and an AAO standard frame, the NF-A4x10 5V is a dedicated 5V version of Noctua’s highly optimised, premium quality quiet 40x10mm fan. Smooth Commutation Drive technology and Noctua’s reference class SSO2 guarantee superb running smoothness and excellent long-term stability. Topped off with modular cabling, the OmniJoin™ Adaptor Set and 6 years manufacturer’s warranty, the NF-A4x10 5V is a premium choice for demanding 5V applications.

This product is the replacement Hotend fan. It is ONLY compatible with the MK3/S/+. The MK2.5/S Rambo requires the v-cable adapter, the fan can NOT be connected to the MK2.5/S Rambo directly.

 

This product is the replacement Hotend fan. It is ONLY compatible with the MK3/S/+. The MK2.5/S Rambo requires the v-cable adapter, the fan can NOT be connected to the MK2.5/S Rambo directly.

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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SKU: 83729890070

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4.0 ★★★★★
Based on 24 reviews
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Product Reviews
A
Verified Purchase
Amazon Customer
Boise, US
★★★★★ 5
Epic. Works great.
Color: Black
Works great every day. Super powerful and smooth compared to my old battery powered one. The shaft is much thicker and is more securely positioned so I can't imagine it becoming tweaked off balance like my old one. And it comes with an extra mixer attachment! I imagine I've put that away for a long time, but we'll see. Easy to turn on and off with one hand, but I can imagine it being less easy than a simple push button for someone with decreased thumb dexterity or mobility. I do wish the lowest speed was slightly lower, but it hasn't caused any splashing or other detriment. The speed adjustment is very smooth and power is abundant. Love the stand, Usb c charge port is solid, battery life is excellent.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
I
Verified Purchase
I'm A Zon
Charlottesville, US
★★★★★ 5
You want this one, for power and quality and saving on AA battery costs
Color: Black
Yes. You want this one, for power and quality and saving on AA battery costs — buy it now. Don’t waste any more time comparing products. After hours, days, weeks, of researching and comparing, I ordered this one. I do not regret it. It is powerful. It was less than $25 when I bought it. It has a USB charger port and it feels solid in your hand. It has a turn-knob at the top to control the variable speed immersion blender aka milk frother aka wand frother. Charge battery fully for 2hrs before first use and then you’re all set. It works very well. It functioned as expected and then even better. Yes. It exceeded expectations. I hope it lasts a long time. It feels like it is very well made and high quality. Classiest and best wand frother I have ever owned. And I’ve owned over 3-4 in the past 10yrs. I got this one at $25 instead of the highest-rated one for $9.99 because those require AA batteries and this frother however is USB-C rechargeable! So in 1-2 years it will have paid for itself in battery costs alone. But there’s no price I can put on how enjoyable it is to use this super powerful, super smooth, high quality, wand frother.
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Reviewed in the United States on September 20, 2025
S
Verified Purchase
Sahil Samral
Lake Worth, US
★★★★★ 5
Quality Design
Color: Gray
Excellent frother/mixer Pros: - Quality feels premium. - Plenty of power to mix even with a drink packed with ice and peanut butter. Basically a mini handheld mixer. - Ease of use is great. I appreciated that this had a longer brother so I can mix drinks in taller cups. Also the grip is fantastic and it is easy very easy to change the speed with just one hand so you can hold the drink with the other. Longevity - So far it's been holding up and hasn't needed a battery replacement. Cons: None so far.
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Reviewed in the United States on December 10, 2025
M
Verified Purchase
Michelle
Boise, US
★★★★★ 5
Highly recommend!
Color: Gray
Love this frother!!! Purchased to replace an Aerolatte that stopped working after a reasonable period of use. Right out of the box, it was charged and ready to go. I’ve been using it daily for about 5 weeks on the same charge it had on arrival and it’s still going strong. Love the variable speed and easy to work with one hand. And this baby can froth! It froths far better than our old Aerolatte. Also love the rechargeable feature so no more AA batteries wasted. This handy kitchen tool makes my morning coffee a true highlight. Highly recommend the Maestri milk frother!
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Reviewed in the United States on February 18, 2026
R
Verified Purchase
RetroGirl
Lake Worth, US
★★★★★ 5
Best Frother Ever!
Color: Black
Great little frother and very powerful after just one charge. I haven’t charged it since the first day and it is still going strong after 3 weeks. I use it daily for coffee froth, but have used it for mixing other things as well. It works great on mixing drink powders into water and for making salad dressing from scratch. It’s one of the best things I’ve purchased on Amazon for kitchen tools. My old frother ate through batteries and was 1/10th as powerful. This one really is amazing. Great quality heavy duty but still small machine. Extra attachment heads are also a bonus.
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Reviewed in the United States on May 23, 2026

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