Good idea if you are only using a 400w machine. Anything higher then 400w will just blow right through that chiller. Which is why people use trash can chillers as the kid was asking. You need to use the right chiller for the right size fog machine. So for a 400w machine that would work fine but I hope it is some kind of drain hole for the water to escape or that water will just melt and fill up the jar and exit in the pipes and back to the machine.