Building a new home is often exciting. You get to make some fun decisions about colors, designs, and more! When it comes to windows, you want Dr. Energy Saver to install the most energy efficient options. Low-E windows will help heat your home during the day when your shades are drawn, helping to make your home more comfortable in the winter. There's more to windows than their beauty: they must be properly installed and air sealed. Unfortunately, these efficient windows and practices are not the standard for most builders.