Energy-efficient windows are designed to reduce energy loss in buildings. They typically feature multiple panes of glass, low-emissivity (low-E) coatings, and gas fills like argon or krypton between the panes. These elements help to minimize heat transfer, keeping homes warmer in winter and cooler in summer. By improving insulation, energy-efficient windows can lower heating and cooling costs, making them a smart investment for homeowners. Additionally, they can enhance indoor comfort and reduce glare from sunlight. Many energy-efficient windows also qualify for energy tax credits, encouraging more people to make the switch.