Low-E glass has an invisible coating that reflects long-wave infra-red radiations towards the interior of the building.
They keep the interiors cooler in summer and warmer in winter months; effectively decreasing the use of energy appliances by controlling the indoor temperature.
Low E windows block infrared light and UV light, but one other vital component makes up the solar spectrum, visible light. Of course, they will reduce visible light slightly, compared to a clear glass pane. However, plenty of natural light will brighten your room.
Low e glass provides better performance as compared to single-glazing glass and double glazing glass. So it is extensively used in glass facade in cold climates.
Thermal Insulation: Low-E glass has a microscopically thin, transparent coating that reflects heat, allowing it to insulate better than regular glass. It reduces the transfer of heat through the window, keeping the indoor environment cooler in summer and warmer in winter.
Energy Efficiency: Due to its enhanced insulation properties, low-E glass helps to reduce energy consumption for heating and cooling. It prevents heat from escaping during winter and minimizes heat gain during summer, resulting in lower energy bills and increased energy efficiency.
UV Protection: Low-E glass also provides better protection against harmful ultraviolet (UV) rays from the sun. It reflects a significant portion of the UV radiation, which can fade furniture, carpets, and artwork over time. Regular glass offers little to no UV protection.