Optimal energy usage as determined for the cooking activities assessed (steam, smoke, and exhaust air temperature) enables significant savings on fan energy usage, maintenance, and fan life – as well as conditioned supply air during idle, low-use, or non-cooking periods.

Advanced energy controls, operated by means of variable-frequency drives giving variable control to exhaust fans, make operating decisions on the precise levels of energy required for comfortable and safe operating efficiency.

With conventional systems, exhaust and replacement air fans operate at 100% or 0% with the human operator required to effect the changeover. Automatic exhaust fan control systems assess the varied energy requirements throughout the working period, adjusting fan speeds automatically to optimise energy usage on the basis of continuous sensor assessment of actual cooking activity at each hood workstation.