Reduce energy costs by up to 85% with the AFA4000 VAV Controller

In uncertain political and economic times our customers are sure about one thing; saving energy (and therefore money) has never been more important.

That’s why we developed the AFA4000 VAV Controller and Auto Sash Controller which is proven to reduce laboratory energy costs by up to 85%.


The AFA4000 VAV Controller automatically adjusts airflow according to need, decreasing the volume of air extracted when laboratory fume cupboards aren’t in use. This both minimises energy consumption and protects laboratory users from potentially hazardous fumes and substances, ensuring you stay fully compliant with health and safety legislation.

The AFA4000 can be programmed to function as an integrated auto sash controller which automatically closes fume cupboards when no operator is present, further increasing energy savings. VAV and auto sash functions can be easily calibrated from the same full-colour, intuitive display so you won’t need a separate auto sash keypad.

Key features

  • Full colour 3.5” LCD display for continuous velocity reading (in m/sec or fpm)
  • Auto sash integration
  • Can be used with Modbus or BACnet protocol
  • Hot wire sensor ensures no inherent drift
  • Visual and audible alarms
  • Full alarm diagnostics and test functionality
  • 60 minute timeline of environmental conditions
  • Bespoke software options

Our customers have responded positively to this exciting new addition to our range and we’ve already received orders from as far afield as the US and India.

About us

TEL is a world leader in air flow controls and monitors designed to:

  • Save energy consumption and costs
  • Reduce carbon emissions
  • Promote lab user safety
  • Provide peace of mind

To discuss how our products could help you save money and reduce waste, call us on +44 (0) 1457 865 635 or email

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