We offer full Energy Efficient Low E windows installation in Los Angeles, San Fernando Valley , Orange County, Riverside and Ventura. Low E Windows are energy efficient because any material that reflects, absorbs and emits radiant energy is going to save energy. When the sun is out and beaming on your home windows, it is the hot sun’s rays that are streaming into your home with nothing to stop them. This is where Low-E Glass comes into play. Low-E Windows have the reflective properties that bounce or reflect the sun’s hot thermal rays rather than allowing them to enter through the window. This is accomplished with the Low-E Glass used in your new windows. This unwanted heat now stays outside of your home rather than entering through the windows.
Low-e coatings have been developed to minimize the amount of ultraviolet and infrared light that can pass through glass without compromising the amount of visible light that is transmitted.
When heat or light energy is absorbed by glass it is either shifted away by moving air or reradiated by the glass surface. The ability of a material to radiate energy is known as emissivity. In general, highly reflective materials have a low emissivity and dull darker colored materials have a high emissivity. All materials, including windows, radiate heat in the form of long-wave, infrared energy depending on the emissivity and temperature of their surfaces. Radiant energy is one of the important ways heat transfer occurs with windows. Reducing the emissivity of one or more of the window glass surfaces improves a window’s insulating properties.
Low-E glass is a special glass that has a low rate of emission. In other words, if there is a heat source inside your house (or outside!), the glass bounces the heat from that object back away from the glass. So, in the winter months, if you have Low-E glass in your home, much of the warmth (heat) given off by the furnace and all the objects which the furnace has heated, is bounced back into the room.
In the summer, the same thing happens but in reverse. The sun heats things up (the air, sidewalks, driveways, next door neighbors bricks, etc.) outside of your house. This heat radiates from those objects and tries to get into your house. Of course, it tries to take the path of least resistance, that being the glass. With Low-E glass much of this heat bounces off the glass and stays outside.
The Two Types of Low-E Glass:
Hard coat Low-E glass is manufactured by pouring a thin layer of molten tin onto a sheet of glass while the glass is still slightly molten. The tin actually becomes “welded” to the glass. This process makes it difficult or “hard” to scratch or remove the tin. Often this glass has a blueish tint to it.
Soft coat Low-E glass, on the other hand, involves the application of silver, zinc or tin to glass in a vacuum. The glass enters a vacuum chamber filled with an inert gas which is electrically charged. The electricity combined with the vacuum allows molecules of metal to sputter onto the glass. The coating is fairly delicate or “soft.”
Low E Windows Advantages:
The Low-E coating reflects heat back to its source so it helps your home stay cooler in the summer and warmer in the winter.
The coating won’t scratch off because it is applied to the inside of the glass.
It help protects against UV fading of any near by furniture.
It requires no special cleaning.