How can the installation of windows impact energy efficiency?

The installation of windows significantly impacts energy efficiency through the reduction of air leaks achieved by proper sealing. When windows are installed with precise attention to sealing techniques, it minimizes drafts and air infiltration. This is crucial as air leaks can lead to significant energy loss, forcing heating and cooling systems to work harder to maintain a comfortable indoor environment. A well-sealed window ensures that conditioned air stays inside and external air is kept out, enhancing the overall energy efficiency of the building.

While allowing more sunlight to enter can benefit passive solar heating, it does not directly relate to the energy efficiency of the windows regarding air leakage. The weight of the glass does not inherently affect energy efficiency, and thicker glass panels, while they can offer some insulation benefits and sound attenuation, do not address the critical aspect of air leakage in the same way that proper sealing does. Therefore, the emphasis on reducing air leaks is key to ensuring windows contribute positively to the energy efficiency of a building.