View Full Version : Using 4" ducting with Cool Breeze

01-16-2007, 02:03 AM
I'm thinking about getting a 250w Cool Breeze but I already have a 4" vortex. Is it cool to run a 6" to 4" reducer?

01-24-2007, 08:07 AM
If you have sufficient CFM on the fan, reducing to 4" should not make much of a difference. 250 watts is not too hot -- as compared to 400 or 1,000. (Keep in mind your duct length and all turns/restrictions when estimating actual CFM through the system.)