Preventing hot and cold air from seeping into or out of the home, thus maintaining indoor temperatures more effectively.

Creating multiple layers that reduce heat transfer. This not only helps in insulating against temperature extremes but also reduces noise pollution.

Low-emissivity (Low-E) coatings are a clear coating that reflects heat. This coating can reflect the interior temperatures back inside, keeping the room warm in winter and cool in summer.

Superior sealing capabilities, ensuring that there are no drafts or leaks, which can be common in older installations.

Modern windows are filled with inert gases like argon or krypton between panes. These gases are denser than air, providing an additional layer of insulation.

The materials used in newer window and door frames, like vinyl or fiberglass, are less conductive than aluminum. This means less heat or cold is transferred into the home.

Quality weather stripping ensures a tight seal, further preventing energy loss.

Treatments that block harmful UV rays, which can heat up interiors and fade furnishings. By blocking these rays, the indoor temperature remains more consistent.

Especially relevant for metal frames, thermal breaks are insulating barriers that prevent the conductive thermal energy from passing through the metal.

Energy Star standards, which means they've been tested and certified for superior energy efficiency.