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The main issue for any ventilation or salon air filter system, is that it removes dust and vapours from your working zone - the immediate area where you work and breath. A vapour or dust filter system that is positioned across the room, may reduce the invisible dust that floats in the air and vapours throughout the room, but still leave you still breathing in more than is healthy.

This is the main advantage of a combined 3-stage filter system, in that it concentrates the suction where you breath. It is absolutely correct that choosing the optimum air flow is important - too much and there is a increase in noise and the air is drawn too quickly through the active carbon vapour filter for it to be effective. Too slow an air speed will reduce the size of the working zone and probably fail to catch high velocity dust that is ejected from e-files.

One criteria that I personally think is important is the manufacturers pedigree. In our case we use a system that has been developed by a company that has a long history of manufacturing air filtration systems for industry and is owned by one of the World's leading industrial tool manufacturers.

Yes, the price is higher than some other systems but as we can share the filter system across two tables, the cost per table is then competitively priced. As these units are mobile on wheels, we can move them from the salon to the classroom as we need.

At the end it is also a personal choice. There is enough info here for anyone to make the best decision for themselves.