How air tight does a room need to be sealed?
A. The room must be as air tight as possible (10% or less) to be economical and efficient. However, it is not necessary, if not practical; we can place equipment to reduce virtually any room to 15% oxygen levels. The more efficiently the room is sealed, the less ongoing operating expense. Think of an air conditioner running in a room with open windows, same concept. A normal system will run 6 to 8 hours daily.
