Is it worth putting a one foot high window to capture southern solar heat?
...ased heat loss. Compare that to a 3x5 window for example which also has 15 square feet of glazing but only 16 feet of rough opening. They will have the same added gains but very different losses, so a 3x5 window may have a net heat gain but a 1x15 window may have a net heat loss. Having said that, there is more at stak...