What Makes A Window Energy-Efficient?
What Makes a Window Energy Efficient?
Low maintenance and durable framing materials help to insulate your home and reduce heat transfer.
Two panes of glass, with air or gas filling the center, insulate much better than standard single pane windows. Some windows even include 3 or more panes for increased energy efficiency.
Low-E stands for low emissivity. This glass has a special coating reflecting infrared light, keeping heat inside in the winter and outside in the summer. This glass also reflects ultraviolet light which can protect furniture inside from fading.
In between the panes of glass some windows have krypton, argon, or other odorless, colorless, non-toxic gases that insulate better than air.
Warm Edge Spacers:
A space keeps the glass panes a certain distance apart, they also insulate the windows edges to reduce heat transfer.