Can The Unit Be Installed Without a Vent From The First Floor?
If the owner absolutely does not want a vent installed in the floor, yes, it can operate without a vent from upstairs. However, the The MBS 210 will not operate as efficiently. It is highly recommended at that point to cut off the bottom of the door to the basement at least 1 high to allow some air to flow into the basement. In some installations, an 8 x 10 hole is cut into the stairwell wall into a first floor room, and covered with a finishing air grill on both sides.
