A clean, comfortable home doesn’t just look good—it also works better. When you think about boosting energy efficiency, your mind might jump to insulation, HVAC upgrades, or high-tech thermostats. But one of the simplest and most overlooked improvements involves something you look through every day: your windows. Clear, well-maintained glass plays a surprisingly big role in how your home holds or loses heat. According to the U.S. Department of Energy, heat gain and loss through windows are responsible for up to 50% of a home’s energy loss, which means that proper upkeep can translate to meaningful savings for your pocketbook. [...]