More on in-line fans

I’ve been asked my opinion on the Vortex and CAN FAN in-line fans; so I did some basic research.

I can’t recommend the Vortex line simply because the manufacturer does not provide the static pressure curves for their fan lines. This is very important because you need to know how a given fan will perform in your exhaust system. A given fan might have a CFM output of 650 CFM at zero inches of static pressure (free air), but what is its output at a half inch or more of static pressure? It could very well be far less, and in that case, the fan is not meeting your design criteria. Continue reading