This research looked at how different windows can help an office building in a hot, semi-arid city use less energy for heating and cooling. They studied things like the size of the windows, which way they face, and the type of glass used. The study found that having double clear glass on south-facing windows can reduce heating energy, while double theoretical-197 glass on north-facing windows can cut cooling energy. Architects and builders could use these findings to pick the best windows for their buildings to save energy and money.