Discussion Starter · #1 ·
My bathroom is 8.5 x 5 ft, and I want to install a new bathroom ventilation fan. I was wondering how many CFM, and whether it matters if I go above the recommended CFM? Although my bathroom is small, I leave the door open when using it, so was wondering if this affects the CFM recommendation. Wouldn't mind going with a higher CFM if it doesn't hurt anything.