How to increase volume flow through 3 inch PVC pipe?
I have a contemporary house. The laundry room is at the lower level, and the original owner put in a 3 inch PVC pipe to vent the dryer. There are concrete walls on one side of the laundry room and finished rooms on the other sides. There must be a way to increase the volume flow through the PVC pipe to properly accomodate a modern dryer. It would be big money to re-vent using a proper 4 inch metal duct, and unless by some miracle I could find a real pro I just think there could be a real mess. Ducting experts must have some ideas on this. The Laundry Room forum here does not look at these type of problems, and there were no practical suggestions. Why can someone not just build a box with a blower and filter and use this to enhance the volume flow?