Double-Pane Windows: Double-pane windows consist of two layers of glass separated by a spacer filled with insulating gas, such as argon or krypton. They provide better insulation than single-pane windows, reducing heat transfer and energy loss.

Triple-Pane Windows: Triple-pane windows take insulation a step further by adding a third layer of glass, resulting in even higher energy efficiency and better sound insulation. They are particularly effective in colder climates where reducing heat loss is a priority.

Low-E Windows: Low-emissivity (Low-E) windows have a microscopically thin coating applied to the glass surface. This coating reflects infrared light, which carries heat, back into the room while allowing visible light to pass through. Low-E windows help control heat transfer and improve energy efficiency year-round.

Gas-Filled Windows: Energy-efficient windows often feature insulating gases like argon or krypton sealed between the glass panes. These gases are denser than air and reduce heat transfer through the window, improving insulation and energy efficiency.

Tinted Windows: Tinted windows have a special tint or film applied to the glass surface to reduce glare and block a portion of the sunlight entering the building. They help control solar heat gain, particularly in sunny climates, and can improve energy efficiency by reducing the need for air conditioning.

Dynamic Windows: Dynamic or smart windows use technology to adjust their tint or transparency based on external conditions such as sunlight intensity or temperature. They can automatically darken to reduce solar heat gain in hot weather and lighten to allow more natural light in colder weather, optimizing energy efficiency year-round.

Storm Windows: Storm windows are installed on the exterior or interior of existing windows to provide an additional layer of insulation and protection against harsh weather conditions. They can improve energy efficiency by reducing drafts and heat loss, particularly in older buildings with single-pane windows.

Frame Materials: In addition to glass features, the materials used for window frames also impact energy efficiency. Options like vinyl, fiberglass, and wood with thermal breaks or insulating properties help minimize heat transfer through the frame, further enhancing overall window performance.