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The form below contains some simple information that will help us to direct your enquiry to one of our fan selection experts. Depending on the complexity of your enquiry we may contact you by phone or email, therefore please give correct details to ensure we can reach you. 
If you require a 3D STEP or DWG file, please advise the fan reference so that we can send the correct file to match your request. 

If you'll need to speed control the fan, require additional controllability or have other helpful system information, please advise in the space above.

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A Complete Guide to Fume Fan Selection in Fume Extraction Systems

The selection of an appropriate fan for a fume extraction system is crucial for achieving effective and efficient extraction. One of the most important things we’ll ask is for you to consider if you’ll ever want to speed control the fan, this will determine the voltage, whether single or three phase. From here we’ll need additional information starting with the below:


01. Airflow
Accurate assessment of the airflow requirements is essential to ensure proper ventilation and fume extract. Factors such as the size of the workspace, the volume and nature of the chemical fumes generated, and the fume hood configuration must be considered to determine the required airflow.

02. Pressure
The fan should be able to generate sufficient static pressure to overcome resistance from ductwork, filters, and other system components. Proper evaluation of the pressure requirements ensures that the fan can maintain the necessary airflow throughout the system.

03. Chemical Compatibility
Chemical compatibility is crucial to avoid corrosion, degradation, or contamination of fan components. The fan materials must be resistant to the chemicals being extracted to ensure durability and long-term performance. Therefore an analysis of the chemicals present is a must.

04. Noise Levels
Consideration should be given to the noise levels produced by the fan. Selecting a fan with low noise emissions is important to maintain a comfortable and productive working environment, as well as contributing to environmental initiatives and BREEAM assessments.

05. Energy Efficiency
Choosing an energy efficient fan helps to reduce operational costs, scope 2 carbon emissions and environmental impact. Fans with high efficiency motors, variable speed drives and intelligent controls can optimise energy consumption based on the actual fume extraction requirements.

06. Regulation Compliance
Ensure that the selected fan meets relevant industry regulations, standards and guidelines for workplace air quality and fume extraction. Compliance with regulations ensures a safe working environment and avoids regulatory issues. This includes both ATEX UK & EU directives.

07. Control Requirements
on/off, start/stop, interval start/stop, how will the overall system need to operate?

08. Functional Adaptability
Will the system need to change in the future that may increase the system duties?


Best Practices for Accurate Fan Selection

Conduct a comprehensive evaluation of the workspace, including the types and quantities of chemical fumes generated and the spatial layout. This information will help your fan manufacturer to choose a fan that can withstand the chemicals present. If the area has potentially explosive gases present, conduct or contract a hazardous area classification to determine the presence of this gas. This will determine whether an ATEX fan is required. An ATEX gas zone will be given for the area that is used to select a fan - we’ll cover this in more depth shortly.  


1 - Engage with Fume Fan Experts Early

  • Give as much information as possible to make selection easier.
  • Download or request technical documentation.
  • Collaborate and consult regularly.
  • Learn from experts, and develop your own fume extraction expertise.
  • Utilise tools to accurately determine airflow and pressure.


2 - Prioritise Energy Efficient Fans in-line with Objectives
If the application objectives focus on the reduction of operational costs, sustainability, BREEAM, or scope 2 emissions, prioritise the specification of energy efficient fans with advanced control features to optimise energy consumption based on actual demand. In some instances, your fan manufacturer may advise alternative AC fans with inverter drives to ensure better performance, slow start ups or accurate speed control while reducing energy.


Consequences of Incorrect Fan Selection
Inadequate Fume Extraction
If the fan does not provide sufficient airflow or static pressure, it may result in inadequate fume extraction. This can lead to the dispersion of chemical fumes within the workplace, posing health risks to employees and comprising air quality. Accumulation of chemical fumes in the workspace can lead to respiratory issues, eye irritation, and other health hazards. Chemical fumes can also escape into adjacent areas or contaminate other processes or equipment.

Increased Operational Costs
Inefficient fan operation can lead to increased operational costs. If the fan is oversized or consumes excessive energy, it may result in unnecessary energy expenditure. Conversely, an undersized fan may require additional fans or modifications to the system, increasing installation and maintenance costs, processes or equipment.

Next >> Enhancing Precision in Fume Fan Specification: The Role of BIM, CAD, and STEP >>