Isomax Silencer Fan

- £-277.45
  • £277.45
Taxes incluses.



  • Industry standard in silent inline extract fans
  • Hugely powerful air movement
  • Super silent operation
  • Three speed settings on the larger models
  • Easy to install – Plug and play
  • German engineered for amazing reliability
  • The brand name to choose for extract fans.
Can-Fan have produced the Iso-Max range of extraction fans to, quite simply, be the ultimate solution for any self-respecting indoor hydroponic garden. Thirty years of German-precision engineering and extensive product development have gone into the design and manufacture of these units resulting in the highest quality extraction system available for you on the hydroponic market.

Can-Fans’s intimate understanding of the demands of a hydroponic grow room extract fan set the miles ahead of the competition when it comes to controlling your indoor grow environment. The galvanised metal housing contains an exceptionally powerful fan motor system, designed not only to move huge amounts of air, but also to direct the air flow a way that causes minimal amounts of turbulence through your duct run, thus optimising the overall rate of air flow throughout any configuration of set up.

Combining this achievement in air flow with a super silent, acoustically insulated metal housing, you can be sure that your grow room’s extraction will move vast quantities of air without being a burden on your ears! In a modern urban environment, noise pollution from an indoor hydroponic grow room can be a significant issue to overcome. Can-Fan’s Iso-Max inline fan manages this almost effortlessly, delivering you optimum airflow rates at whisper quiet decibel levels.


The design of the Can Iso-Max fan has been extensively thought through. The highly efficient motor itself consists of two main propellers. One rotor and one stator, this unique combination of components ensures the flow of air itself is manipulated into a highly uniform jet of air. With the flow of the exhausted air having such a high level of uniformity, minimal turbulence will be seen throughout the entire duct run. This results in lower overall decibel levels from the movement of the air and also minimises the drop in air flow you will conventionally see when attaching an extraction fan to any other component.

This decrease in air flow is a significant factor to consider when considering which fan to purchase. The drop in air flow is directly related to the amount of back pressure that is created when attaching something like a filter or even ducting to the unit. Every extraction fan will be effected differently under pressure and the manufacturer should be able to supply you with a pressure curve that will allow you to get an understanding of how the fan will perform. If you cannot get that info from a manufacturer then you should be wary of their products performance! Being a company with countless years of experience Can provide these for all their makes of fans.

Further to performing excellently under pressure, Can Iso-Max extraction fans have been designed with the modern-day hydroponics grower firmly in mind. A layer of highly sound proofed, acoustically insulated protection surrounds the motor, ensuring one of the quietest fans you can find on the market. While they may not be quite as silent as a box fan, inch per inch, they will move much more air, and still at a very quiet level. All being contained with a galvanised metal housing, if super high air flow is your main concern followed by super quiet operating decibel levels, then Can extract fans are the choice for you.


Installation and use of the Can Iso-Max extraction fan has been thoroughly thought through. The simple yet highly effective addition of two hanging hooks on either end of the unit are a massively understated feature of this fan. Simply connect your hanging chain or rope ratchets to these sturdy metal hooks and bobs your uncle, it is ready to use. No messing around with bungee cords or chains trying to bodge together a random way to hang it up like you may have done with some other fans.

Perfect for use as either an intake or an out-take fan, there is almost no finer fan that could grace your grow room with its presence. Always take into consideration the size of your intake fan compared to your extract fan, as you do not want to run into a position where you have a positive air pressure overall in your room. Always make sure you have more air going out of your room than going in.


It is not quite as easy as looking at the m3/h on the fans and choosing the model based on that. Especially if you are connecting your fan to a carbon filter, you need to consider the increase in pressure this will have on the fan. When attaching a filter (or to a lesser degree, duct runs with bends in) you reduce the airflow that the fan can provide as it is essentially creating a resistance to that airflow. Making sure you choose the correct size of carbon filter for the relevant fan is crucial to ensuring you have a fully functioning extraction system.

Every room needs to be considered on an individual basis, there is no one size fits all option. You need to consider the sheer volume of your room, how much wattage of lights you have, and then other localised parameters like if it is on a south facing aspect of a property. Please feel free to give us a call or pop down into the store and we can go through your circumstances to ensure you get exactly the right model for the job at hand.


Ensure the surface you are hanging it from is suitable for bearing the load, especially for long term periods of time. Also ensure that you hang it with something appropriate for the job, like heavy duty chain or ideally rope ratchets, so the mounting height can be easily adjusted.

It is always preferable to use deluxe fast clamps and insulated ducting with the Can Iso-Max extract fan. The fast clamps will ensure the perfect air tight seal around the flange, while the insulated ducting will help further reduce and minimise any noise pollution heard from the unit.

It is always recommended to use premium fan speed controllers with extraction fans, as cheaper versions will tend to make the units hum, particularly when on their lower speed settings.


150mm Fan

  • Output: 410m3/h at full power. Comes with 3 speed control switch to dim the fan
  • Power consumption: 51 watts, 0.2 amps
  • Noise level at 1 meter: 41db

200mm Fan

  • Output: 870m3/h at full power. Comes with 3 speed control switch to dim the fan
  • Power consumption: 121 watts, 0.5 amps
  • Noise level at 1 meter: 48db

250mm Fan

  • Output: 1480m3/h
  • Power consumption: 150 watts, 0.7 amps
  • Noise level at 1 meter: 44db

250mm High Power Fan

  • Output: 2310m3/h
  • Power consumption: 273 watts, 1.2 amps
  • Noise level at 1 meter: 50db

315mm Fan

  • Output: 2380m3/h
  • Power consumption: 265 watts, 1.2 amps
  • Noise level at 1 meter: 46db

315mm High Power Fan

  • Output: 3260m3/h
  • Power consumption: 512 watts, 2.3 amps
  • Noise level at 1 meter: 51db