Posted 2/2/2019 19:58 (#7293041 - in reply to #7292863) Subject: RE: Humidity problems if or when power washing daily in a farm shop.
NE SD
If you're going to be doing it that often, you are going to want an air exchanger, not an exhaust fan. They are 80% efficient and cost around $1500 last I checked.
If we wash even with a window and walk door open or even an overhead up a couple feet so the dry winter air can blow through you still end up with some excess moisture in the building for 2-3 days.