Dripping windows, mold, mildew, and fungus indicate serious moisture problems and are likely to cause walls and ceilings, as well as inner roof components to get wet. Ventilation is the best advice for dealing with the situation, allowing moisture to escape. Fans and air changers are expensive to operate and need maintenance.

The Thinking Window Vent System provides positive air changes without using electricity and without the need for intervention or maintenance. Wind blowing toward your window exhausts the inside air outside. The device closes automatically if the winds are too strong, and keeps out rain. The most polluted or moist air in a room rises to the ceiling and is drawn toward the vent to be exhausted. Since the vents resist infiltration, a unidirectional air stream is established in which pollution and moisture cannot proliferate to harmful levels. The continual, slow exchange of air keeps the room fresh, and conserves heat by keeping the window closed.

NYCHA authorities contacted AVP, Inc. to immediately install VB-7 ventilators in Bushwick Houses in Brooklyn, N.Y., to prevent tenant litigations. By reducing interior moisture, the Thinking Window Vent System killed this mold in less than one week.

Another NYCHA project, Betances Houses in Bronx, N.Y., were being destroyed by trapped interior moisture. Much of the ceiling was disintegrating. This building had also been equipped with the English dilution type vents. The superintendent equipped the entire building with the Thinking Window Vent System.