Which of the following is NOT a recommended strategy for improving window performance?

Using single-pane glass is not a recommended strategy for improving window performance because single-pane windows provide minimal insulation and are less energy-efficient compared to multiple-glazed options. In contrast, installing storm windows, applying window films, and using low-emissivity (low-E) coatings are recognized methods for enhancing the thermal performance of windows.

Storm windows create an additional barrier against air leaks and temperature transfer. Window films can reflect heat and reduce solar gain, thereby improving comfort and reducing energy costs. Low-E coatings help to reduce heat transfer while allowing natural light into the home, enhancing both energy efficiency and occupant comfort. Therefore, the emphasis on single-pane glass, which lacks these benefits, highlights why it is not part of effective window performance improvement strategies.