We are doing major mods in our development data center. Of course we are keeping all the critcal services up. This beast has been a god-send. It cleans all the air in the room in 8 minutes. We just started work yesterday, and it has already saved tons of dust and stuff getting into our systems. Not a simple hook-up though. Requires 30A @ 230V. Doesn't come with a plug. It has to be hard wired.