Naturally Ventilating Windows

KC-DC-06NOV17-1404

True double-hung windows like these in Katrina Cottage VIII can ventilate a house early on a still morning or late in an evening with no breeze. Just drop the top sash a bit and raise the bottom sash, and because hot air rises, the warm air will flow out at the top, pulling cool air in at the bottom. Single-hung windows might look like double-hungs, but they’re incapable of ventilating like this because the top sash can’t move.

© Studio Sky 2014