Why not just open the window?
When opening a window, we typically open it too much! Most trickle ventilators provide only 4 to 6 square inches of opening per window. Even a small size window opened just a crack can give an opening 10 times that of a trickle ventilator. Consequently, penalties in terms of heating and cooling costs are incurred, not to mention creating uncomfortable drafts. Safety and security considerations are maintained with trickle ventilators because fresh air circulation is achieved while windows are shut and locked.
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