Better Fresh Air Venting Plan

[mark]

Originally Posted by craigwmiller

If the humidity is higher outside, venting air from inside to out will draw more-humid air from the outside back in -- just making things worse

putting my met training to use, you need to take in account a RH of 40% @ 20° is a different amount of water vapour than a RH of 40% @ 15° (@ 15° for a equal amount of water compared to 40%/20° your RH is up around 70%)