I'm remodeling our large (>200 sq. ft.) master bathroom. The bathroom is currently not vented, but does have three windows (which are almost never open). It seems like venting is a good idea, but I'm trying to keep that part of the project simple. The rule of thumb seems to be 1 cfm per square foot of bathroom, but the largest single vent I can find is 150 cfm. Can anyone suggest an approach to venting a bath of this size? I could go with a remove in line fan and two ceiling registers or simply pick a reasonable size vent (>100 cfm) and I'll be better off than I was before. Is this rule of thumb for sizing valid or very conservative for a dry climate (San Jose, CA).
Rick T
Rick T