What is Low Emissivity?
Thanks to advances in technology, today’s ENERGY STAR® certified windows, doors, and skylights offer greater savings than ever before with such products as low emissivity (low-E) glass.
Low-E glass is made with a metallic coating on the inside of the insulating glass unit. This lowers the window’s ability to transfer heat and saves energy without compromising visibility.
The low-E coating also reduces fading by up to 75% by reflecting long-wave light rays that carry heat and UV.