The NF-A14 is a premium quality quiet 140mm fan with a square frame that complies with Noctua’s AAO (Advanced Acoustic Optimisation) standard. Its square shape and 140mm mounting holes (124.5mm spacing) make it ideal for use on watercooling radiators or as an upgrade for 140mm case fans. Featuring sophisticated aerodynamic design measures such as Flow Acceleration Channels, the NF-A14 further improves the renowned quiet cooling performance of the award-winning NF-P14. The FLX version provides 1200/1050/900rpm speed settings via the supplied Low-Noise Adaptors in order to provide full flexibility in fine-tuning the fan for maximum ventilation performance or near-silent operation. Its superb running smoothness, reference-class SSO2 bearing and Noctua’s trusted premium quality make it an elite choice for the highest demands.
Succeeding the award-winning NF-P14

Succeeding the award-winning NF-P14

Noctua's NF-P14 fan has become a default-choice among PC enthusiasts looking for a premium quality quiet 140mm fan. Thanks to its thoroughgoing aerodynamic optimisations, the NF-A14 provides higher static pressure and an even better airflow/noise ratio than its much acclaimed predecessor.
Square 140mm frame

Square 140mm frame

The NF-A14's square 140mm frame with 140mm mounting holes (124.5mm spacing) makes it a premium grade replacement for common 140mm case fans and perfect for use on 140mm water cooling radiators, where its square shape will ensure full coverage and best pressure performance.
Flow Acceleration Channels

Flow Acceleration Channels

The NF-A14 impeller features suction side Flow Acceleration Channels. By speeding up the airflow at the crucial outer blade regions, this measure reduces suction side flow separation and thus leads to better efficiency and lower vortex noise.
AAO Frame

AAO Frame

Noctua's AAO (Advanced Acoustic Optimisation) frames feature integrated anti-vibration pads as well as Noctua's proprietary Stepped Inlet Design and Inner Surface Microstructures, both of which further refine the fan's performance/noise efficiency.
Stepped Inlet Design

Stepped Inlet Design

Noctua's Stepped Inlet Design adds turbulence to the influx in order to facilitate the transition from laminar flow to turbulent flow, which reduces tonal intake noise, improves flow attachment and increases suction capacity, especially in space-restricted environments.
Inner Surface Microstructures

Inner Surface Microstructures

With the tips of the fan blades ploughing through the boundary layer created by the Inner Surface Microstructures, flow separation from the suction side of the blades is significantly suppressed, which results in reduced blade passing noise and improved airflow and pressure efficiency.
Integrated Anti-Vibration Pads

Integrated Anti-Vibration Pads

Integrated Anti-Vibration Pads made from extra-soft silicone minimise the transmission of minute vibrations while maintaining full compatibility with all standard screws and other mounting systems.
SSO2 Bearing

SSO2 Bearing

The NF-A14 features the further optimised second generation of Noctua's renowned, time-tested SSO bearing. With SSO2, the rear magnet is placed closer to the axis to provide even better stabilisation, precision and durability.
Metal bearing shell

Metal bearing shell

In order to guarantee the highest possible degree of manufacturing precision, minimum tolerance and excellent long-term stability, the NF-A14 sports a CNC milled bearing shell made entirely from brass.
Smooth Commutation Drive 2

Smooth Commutation Drive 2

The latest version of Noctua's advanced Smooth Commutation Drive system ensures superb running smoothness by eliminating torque variations and switching noises. This makes the NF-A14 remarkably quiet even at very close distances.
3 speed settings for full flexibility

3 speed settings for full flexibility

Providing 1200, 1050 and 900 rpm speed settings via the supplied Low-Noise and Ultra-Low-Noise Adaptors, the NF-A14 FLX (Flexibility) can be fine-tuned for superior airflow or maximum quietness.
Extensive cabling options

Extensive cabling options

The fan's short 20cm primary cable minimises cable clutter in typical applications while the supplied 30cm extension provides extended reach when necessary. Both cables are fully sleeved and the supplied 3:4 pin adaptor allows the connection of the fan directly to the power supply.
Ultra-Low Power Consumption

Ultra-Low Power Consumption

Despite of its further improved performance, the NF-A14 FLX consumes only 0.96W of power, which amounts to a reduction of about 20% as compared to its predecessor. This doesn't only make it eco-friendly but also helps to cut down the electricity bill!
6-year manufacturer’s warranty

6-year manufacturer’s warranty

Noctua fans are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the NF-A14 features an MTBF of more than 150.000 hours rating and comes with a full 6-year manufacturer's warranty.
FAN Specification
140x140x25 mm
Blade Geometry
Rotational Speed (+/- 10%)
1200 RPM
Rotational Speed with L.N.A. (+/- 10%)
1050 RPM
Rotational Speed with U.L.N.A. (+/- 10%)
900 RPM
115,5 m³/h
Airflow with L.N.A.
101,9 m³/h
Airflow with U.L.N.A.
88,7 m³/h
Acoustical Noise
19,2 dB(A)
Acoustical Noise with L.N.A.
16,4 dB(A)
Acoustical Noise with U.L.N.A.
13,8 dB(A)
Static Pressure
1,51 mm H₂O
Static Pressure with L.N.A.
1,18 mm H₂O
Static Pressure with U.L.N.A.
0,89 mm H₂O
Max. Input Power
0,96 W
Max. Input Current
0,08 A
12 V
> 150.000 h
Scope of Delivery
  • Low-Noise Adaptor (L.N.A.)
  • Ultra-Low-Noise Adaptor (U.L.N.A.)
  • 3:4-Pin Adaptor
  • 30cm Extension Cable
  • 4 Vibration-Compensators
  • 4 Fan Screws
6 years
A-Series fans
29.06.2013 // Vortez.net

NF-A14 FLX Review

Noctua has devoted itself to quiet cooling. In that they have succeeded well. One measure of their insistence on quietness was their not bringing PWM products to market until they were ready to do it the Noctua way. “Fans” of Noctua’s fans long wrote about how they wanted PWM versions, yet there were no PWM fans from Noctua. But it turned out that Noctua was not ignoring PWM; their engineers were working on developing a silent PWM control. The clicking seen in other PWM fans – even quiet clicking – is completely absent in Noctua PWM fans. This started with their NF-F12’s, and has now extended to their A series. All are clickless. As well as can be measured in a non-professional setup, Noctua’s airflow specifications are accurate. You can listen to a fan and hear if it is quiet or not, and whether it makes unpleasant noises (Noctua fans are free of unpleasant noises). But airflow is another matter. Airflow takes special instruments to measure. It is comforting to know Noctua’s specifications on this are accurate; so you can use those specifications in your buying decisions. The various Low Noise Adapters and Ultra Low Noise Adapters are different for each of the fans. Clearly, they are tailored to achieve particular results. This may or may not be unique to Noctua fans. Interestingly, Noctua says nothing about it. The Noctua accessories are of good quality, and appear likely to last in extended usage. They are all handsomely sleeved as well. The fan frames are sturdy, and the corner cushions do not extend into the screw holes. That means the fans can be securely fastened with or without the cushions.
Test verdict: "Overall, the Noctua A series is a fine set of fans. Careful attention to airflow and acoustics, along with the best PWM circuits in existence, make these superb fans." (Ed Hume, Vortez.net)
04.03.2013 // Overclockers Club

NF-A14 FLX Review

Keep in mind that while the test results aren't overwhelmingly spectacular, consumers are offered more options depending on what they're looking for. The Noctua NF-P14 was a "convertible" fan. It had 120mm hole spacings with 140mm extensions with a round frame, so it could fit 120mm or 140mm mounts However, like a real convertible with the top down, it's a bit louder. Round framed fans in general perform much better on air cooling radiators, but square framed fans in general perform better on watercooling radiators. Thus, you now have the option to choose between a variety of 140mm (and 150mm) fans from Noctua. Whether you're looking for the most optimal silent solution with the NF-A14 ULN, or a quieter replacement to the NF-P14 with the NF-A14 FLX that still does a great job with the U.L.N.A. adapter. The NF-P14 is still a solid performer and the NF-A15 PWM is a great replacement for 120mm fans where size isn't a factor. Decisions, decisions!
Test verdict: "One of my favorite things about Noctua is how quiet its fans are without sacrificing thermal performance. Noctua pushes the boundaries of continually making improvements in all aspects of its products, and the latest from Noctua doesn't disappoint. Comparing these fans to their predecessor, the Noctua NF-P14, it's easy to notice the differences in design, and I could definitely hear less vortex noise!" (Ebon Kim, Overclockers Club)
23.02.2013 // Neoseeker.com

NF-A14 FLX Review

Noctua's NF A-15 PWW, A-14 FLX, and the A14 ULN are a welcome addition to their lineup of cooling products. The NF-A15 PWM and the NF-A14 FLX run at 1200rpm when not equipped with the low noise adapters. This of course improves their overall performance at the cost of increased noise output from the fans. I am not saying they generate a lot of noise - as a matter of fact even at their maximum rotational speeds the fans are are extremely quiet, almost to the point that I continued to check just to make sure they actually were in operation. The NF-A14 ULN without a doubt generates the least amount of noise with or without the low noise adapter. [...] Noctua's NF-A15 PWM, NF-A14 FLX, and the NF-A14 ULN are priced around $24.00 each; a reasonable price considering the quality and performance of the fans (not to mention a 6 year warranty). In my book, that's a lot of bang for the buck.
Test verdict: "Noctua's NF A15 PWM, A-14 FLX, and the A-14 ULN did an excellent job of keeping our testbed cool given the fact they are not high RPM fans. [...] [T]hese fans would make a great addition to either an HTPC or gaming PC for those who like quiet." (Roger Cantwell, Neoseeker.com)
13.02.2013 // HiTechLegion.com

NF-A14 FLX Review

The NF-A14 FLX is obviously the most versatile fan in the lineup, and it performed very well in each of the configurations it was put into. On the X60 radiator, temperatures were very close to the stock fans that were spinning a full 50% faster, thanks to the NF-A’s high static pressure, and the NF-A14 FLX made a drastic difference in the noise levels of the X60. Noise levels were way down, and the X60 was a far more livable piece using the NF-A14 FLX. Mounted as case fans, the NF-A14 FLX moved considerably more air than the stock case fans, keeping temperatures down while showing no increase noise. At slower speeds, the NF-A14 FLX was incredibly quiet while still exhibiting excellent airflow. [...] Noctua has again put out a series of absolutely top notch fans with the NF-A 140mm varieties. The versatility of the offerings should offer up something for the needs of just about any situation, ranging from extreme cooling to extreme silence. As always, Noctua’s build quality is second to none with performance to match.
Test verdict: "The Noctua name has become synonymous with quiet cooling and extreme performance. Many of their products are rightfully legendary in enthusiast circles, and deservedly so. Over the years, Noctua has set a very high standard for themselves to live up to, and the NF-A Series fans do not disappoint in any way. The three configurations are very well thought out, and add a great deal of versatility to the line." (George Cella, HiTechLegion.com)
24.01.2013 // OCmodshop.com

NF-A14 FLX Review

So in short, what can I say… The NF-A15 and NF-A14 cooling fans are proper Noctua quality with added new innovations. With every new design they unveil, Noctua brings out great airflow with minimal noise and are extremely reliable (I still use 5 year old Noctua fans). They are a bit more expensive than typical case fans but are worth every penny.
Test verdict: "Would I buy these if I needed more? In a heartbeat. They are by far the best fans I ever had in my hands, and they have a six-year warranty to boot! I even replaced some older Noctua fans I still had. Don’t worry the older fans now spin in my friend’s case who needed some extra fans." (Daniel Pielage, OCmodshop.com)
24.01.2013 // XtremeHardware.it

NF-A14 FLX Review

Questa nuova serie, che verrà analizzata in modo superficiale in questo capitolo, rappresenta la volontà di Noctua di potenziare e consolidare la propria situazione nel panorama delle ventole aventi un diametro molto elevato, infatti a seguito dell’immissione in commercio di questi modelli si è raggiunto il completamento dell’offerta per ogni settore. La serie ULN e FLX da 140mm si caratterizza per il nuovo telaio AAO introdotto con l’eccellente ventola da 120mm NF-F12 Focused Flow, recensita da noi tempo fa (Qui), e per il cambiamento del formato da circolare a quadrato, oltre a tutta la nuova serie di migliorie tecniche e strutturali che sono già state menzionate nel capitolo precedente. L’intera serie “A” infatti presenta quasi sempre le medesime caratteristiche tecniche, indipendentemente da modello e dal diametro, per cui la qualità complessiva è sempre molto elevata.
Test verdict: "Oltre a questo troviamo le Noctua A15 e A14, che occupano posizioni basse, ma che però presentano una rumorosità davvero irrisoria se rapportata alle altre, e quindi un comfort acustico invidiabile. Il modello A14 FLX, sebbene occupi l’ultima posizione, troviamo che sia il migliore di tutti per quanto riguarda il rapporto Temperature / dBA" (Matteo Trinca, XtremeHardware.it)
17.01.2013 // PC Ekspert

NF-A14 FLX Review

Cijene manjih (A4x10/A6x25/A9x14 – 12,90/14,90/16,90€), kao i većih 140mm modela (21,90€) su uglavnom u skladu s dosadašnjom politikom Noctua proizvoda, koja se i dalje bazira na principu – kvaliteta prije svega, uz odgovarajuću cijenu. Nakon svega viđenog, zaista im ne možemo puno zamjeriti na tome, s obzirom na sve prednosti njihovih proizvoda iz nove A-serije za koje imamo gotovo isključivo riječi hvale.
Test verdict: "Noctua nam je ovom prilikom priredila mnoga iznenađenja po pitanju novih proizvoda raznih veličina i namjena. Od minijaturnog 40mm A4x10 modela, preko A6x25 i A9x14, pa sve do 140mm inačica, svaki od testiranih ventilatora odaje onu poznatu Noctua kvalitetu i uglađenost u radu uz visoku funkcionalnost i bogatu dodatnu opremu. Za svakoga ponešto, bi možda bio najslikovitiji opis nove A-serije ventilatora, a što se nas osobno tiče, itekako bismo voljeli vidjeti par 140mm ULN modela i u našem testnom računalu. Za korisnike koji zahtijevaju veliku efikasnost i relativno umjeren nivo buke, tu su naravno A14 FLX i A15 PWM modeli, koji svojom fleksibilnošću, elegantnim radom ali i visokom kvalitetnom izrade itekako zaslužuju našu preporuku." (Domagoj Hodak, PC Ekspert)
26.12.2012 // hardwaremAx.net

NF-A14 FLX Review

Die Kühlleistung der A-Serie ist gemessen an ihrer Drehzahl sehr zufriedenstellend, sodass sie sich nicht nur als Gehäuselüfter sondern auf für den Einsatz auf Radiatoren und Kühlkörpern gut eignen. [...] Alle drei Noctua überzeugen durch die gewohnt sehr hohe Qualität und am Lieferumfang können sich viele Konkurrenten ein Beispiel nehmen.
Test verdict: "Bei der Kühlleistung gibt es bei der A-Serie, welche Noctua-typisch über eine 6-jährige Garantiedauer verfügt, nichts zu bemängeln. Der NF-A14 FLX ist ein großer Fortschritt im Vergleich zum Vorgänger" (Lukas Dornstauder, hardwaremAx.net)
12.10.2012 // CoolingTechnique.com

NF-A14 FLX Review

+ ottima dotazione di serie
+ tecnologicamente avanzata
+ munita di disaccoppiatori
+ basse emissini acustiche
+ ottima curva di pescaggio
+ bassi consumi
+ avvio a sei volts
+ alte pressioni statiche
Test verdict: "Le sorelle maggiori A-14 FLX e A-15PWM hanno parecchio in comune, tolto infatti il frame esterno e il controllo PWM tutto il resto è identico e ciò lo si può chiaramente vedere dai risultati strumentali che, a fronte di piccoli movimenti dovuti ai pochi rpm di differenza, evidenziano una struttura ventilante identica con valori di emissioni acsutiche e di pescaggio uguali che permettono ad entrambe le soluzioni di erogare 60CFM con meno di 19dB(A) posizionando i modelli ai vertici di categoria nei relativi grafici di riferimento dove Noctua faceva e contina a fare scuola." (Damiano Villa, CoolingTechnique.com)
19.08.2015 // Overclockers.ru

NF-A14 FLX Review

Две модели Noctua серии NF-A14 демонстрируют отличные результаты. Оба вентилятора неплохо «дуют» уже при 25 дБ. Пожалуй, именно их можно назвать лучшими «корпусными» моделями в подборке.
Test verdict: "Подведем итоги сравнения 140 мм моделей. Звание лучшего корпусного вентилятора, пусть здесь и развернулась серьезная борьба, следует отдать Noctua NF-A14 FLX." (Константин Назаров, Overclockers.ru)

Installation Manual (PDF)

Information Sheet (PDF)

I get a CPU fan error despite the fan is running!

Some mainboards display a CPU fan error when the fan speed falls below a certain threshold, e.g. 900rpm. If you want to run the fan below this speed (e.g. using the supplied U.L.N.A.), please adjust the threshold in the BIOS or disable CPU fan error warning.

Can I disassemble my fan for cleaning?

In order to ensure flawless operation over many years of usage, all Noctua fans come with a premium grade SSO bearing, which is fully sealed to prevent the entering of fine dust particles. Please note that the fan is not designed to be taken apart by the user. Removing the impeller from the frame will break the sealing of the bearing and results in a loss of warranty.

It is thus recommended to clean your fans using a duster, slightly moist tissue or canned air. Please be careful not to use too much force in order to prevent any damage to the fan. Please don’t use a vacuum cleaner as this may apply excessive force to the fan.

Can I paint my Noctua fan in order to change its color?

Since even small variations in the layer of paint can lead to an imbalance of the impeller, resulting in vibrations, higher noise levels, increased stress on the bearing and thus reduced lifespan, we do not recommend painting the fan. Please note that for the reasons stated above, painting the fan will void your warranty.

How can I find out the direction of airflow and sense of rotation?

When looking at the fan so that the circular sticker with the Noctua logo is facing you, the direction of airflow is towards you and the sense of rotation is clockwise:


How should I clean my Noctua fan?

Fans inside computer cases tend to accumulate dust over longer periods of usage. In order to maintain maximum performance, please clean your fans regularly using a duster, slightly moist tissue or canned air. Please be careful not to use too much force in order to prevent any damage to the fan. Please do not use a vacuum cleaner as this may apply excessive force to the fan and do not put the fan under running water as water residues inside the motor may lead to short circuits.
In order to ensure flawless operation over many years of usage, Noctua’s premium grade SSO bearings are fully sealed to prevent the entering of fine dust particles. Please note that the fan is not designed to be taken apart by the user. Removing the impeller from the frame will break the sealing of the bearing and results in a loss of warranty.

My Noctua 3-pin fan starts to spin when the PC boots but then stops, what is wrong?

Many mainboards are able to automatically regulate the fan speed of 3-pin fan via voltage based measures. However, due to limitations of this method it may occur that the mainboard reduces the voltage so much that the fan stops. To resolve the issue, you can:

  1. Choose a higher fan speed profile in the BIOS (e.g. „normal“ instead of „silent“, etc.) or deactivate automatic fan speed control and use a Low-Noise Adaptor instead.
  2. Use the mainboard‘s fan speed control software or 3rd party tools like Speedfan to regulate the fan speed. Unlike BIOS based fan speed control, the supplied software usually checks whether the fan has stopped and increases voltage accordingly or at least offer more options to set up the fan properly.

What pin configuration do Noctua fans use?

All Noctua fans feature the standard pin-configurations set out in the Intel and AMD specifications. These standard pin-configurations are used on most mainboards and fan controllers today:


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