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Excellent
3,176 reviews at Trustpilot.3,176 reviews

Acousti Products Ultra-Quiet Fans

AcoustiFan™ DustPROOF - Premium Quality Quiet Multi-Purpose Cooling Fan Range

The fan motor for the DustPROOF range of virtually silent fans is extremely quiet. The AcoustiFan™ DustPROOF series use the highest quality double-ball bearings available for reliability, use-anywhere inside a PC for extra long life expectancy (upgrade your PC and take these fans with you!). One of the unique features of these PC fans is that the motor has been completely sealed from the outside environment. This prevents dust entering the motor and also reduces the amount of noise perceived to be coming from the bearings within the motor.

Each DustPROOF™ quiet fan is also supplied with a unique 3-speed fan cable which offers maximum flexibility (3-pin or 4-pin power connectors), along with the ability to select a fan speed suitable for your PC and noise sensitivity. However, if you opt for the lowest fan speed, (virtually silent at 5VDC), be certain to design the airflow through your PC system carefully and monitor system and component temperatures. Acousti have even included four handy cable ties with each DustPROOF™ fan!

The DustPROOF™ quiet fans also incorporate an Auto Start safety feature. This feature is built into the fan’s PCB and automatically restarts the fan after the release of any obstacle which has prevented the blades from spinning.

To convert airflow in cubic feet per minute (CFM) to cubic metres per hour (m³/h), multiply the CFM figure by 1.7.

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Acousti AcoustiFan: DustPROOF 60mm fan

326 in stock
AcoustiFan: DustPROOF 60mm fan
  • Virtually silent - designed to “BE QUIET AND STAY QUIET!"
  • Sealed motor prevents noise due to dust damage
  • Very high quality, extra-long life (over 6.5 years)
  • Includes free 3-speed fan cable and Ultra Soft Fan Mounts
  • 3 year manufacturer warranty
  • 25mm thick (1 inch)
More Details
£17.89
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Acousti AcoustiFan: DustPROOF 120mm fan

151 in stock
AcoustiFan: DustPROOF 120mm fan
  • Virtually silent - designed to “BE QUIET AND STAY QUIET!"
  • Sealed motor prevents noise due to dust damage
  • Very high quality, extra-long life (over 6.5 yrs)
  • Includes 3-speed fan cable
  • 3 year manufacturer warranty
  • Supplied with 4 FREE Ultra Soft Fan Mounts
More Details
£14.66
Add to Basket

Acousti AcoustiFan: DustPROOF 80mm fan

61 in stock
AcoustiFan: DustPROOF 80mm fan
  • Virtually silent - designed to “BE QUIET AND STAY QUIET!"
  • Sealed motor prevents noise due to dust damage
  • Very high quality, extra-long life (over 6.5 yrs)
  • Includes 3-speed fan cable
  • 3 year manufacturer warranty
  • Supplied with 4 FREE Ultra Soft Fan Mounts
More Details
£10.73
Add to Basket

FAQ

  • How do I measure fan size?

    The size of fan you need will generally be determined by the size of the fan fitting position in your PC case. The sizes of all the fans on our website are shown as measured along any one of the fan’s four sides, NOT the distance between the fan’s screw holes! Our most popular fan size is 120mm, followed by 80mm. This isn’t really dictated by customer preference, but more by recent designs of PC cases.

    As for the thickness (depth) of the fan, generally 25mm (1 inch) is by far the most common depth, although smaller fans can have shallower depths such as 15mm or even 10mm. All our fans are 25mm thick unless otherwise stated. If you have any questions about which fan you should order, please don’t hesitate to get in touch.

    If you know the distance between the fan mounting screw holes but don’t know what fan size to order, please see the following table. Note that the mounting hole measurements shown below are taken horizontally or vertically between the holes and not diagonally.

    Screw hole spacings and fan sizes

    32mm between screw holes40mm fan size
    40mm between screw holes50mm fan size
    50mm between screw holes60mm fan size
    60mm between screw holes70mm fan size
    72mm between screw holes80mm fan size
    83mm between screw holes92mm fan size
    105mm between screw holes120mm fan size


  • I received a small cable (resistor) with my fan; what is it for?

    The resistor cable (also called Ultra Low Noise or ULN cable) is designed to allow the fan to run slightly slower for even quieter operation. The benefit in lower running noise is significant. Although the airflow will be reduced slightly, this usually has minimal effect on PC temperature. We would generally recommend using the ULN resistor cable for best results in almost all circumstances.

  • How can I tell which way the air blows through the fan?

    Hold the fan so that the round fan sticker is facing you. You are looking at the rear of the fan. When you plug the fan in, the air will be blowing towards you. If you want a fan to act as an air intake, then the fan sticker will be facing the inside of the case. Some fans also have two small arrows moulded into their plastic housing - one arrow shows the direction of airflow, and the other (at 90°) shows the direction of blade rotation.

  • Is it possible to use a 4-pin PWM fan or CPU cooler with a motherboard which has only 3-pin fan headers on it?

    Electrically, there is no problem doing this - the fourth pin on the fan cable is used purely for PWM control and is not needed in order for the fan to run. So you can plug the 4-pin fan connector onto the 3-pin motherboard fan header, leaving the fourth pin not connected to anything. The fan will potentially run at full speed, so if you would like to reduce the speed of the fan you will need to adjust the fan speed setting in your BIOS or use fan control software such as SpeedFan in Windows.

    The only other problem to consider is that occasionally, components immediately adjacent to the motherboard fan header can get in the way of the larger 4-pin fan connector, physically preventing connection. This problem also occurs if you try to use an in-line fan speed controller such as the one made by Gelid.

    Another avenue to explore is the possibility of using a bay-mounted fan controller. Several models are available now which provide 4-pin fan headers, so this is an easy way to use 4-pin PWM fans in a PC system which has only 3-pin fan headers on its motherboards. When using this method, you may find it necessary to disable any fan warning settings in your motherboard BIOS, since the motherboard may incorrectly believe that its CPU fan has failed when the fan is connected to a fan controller rather than directly to the motherboard itself.

“Excellent service from Quiet PC”

“Excellent service from Quiet PC. Highly recommended. Next day delivery. I had a query on my potential purchase, so gave them a quick call and they were very helpful, understanding and responding to my query very quickly. Items arrived well packed. Competitive pricing. No hesitation in recommending!”

11th February 2019 via Trustpilot