Low E Glass and Energy Ratings

What is Low E glass?

Low e stands for low emissivity, which refers to the amount of heat transmitted or absorbed through a surface.

Natural light is the key ingredient for making a comfortable and healthy home. With low e glass, you can bathe in natural light and reconnect with your surroundings. Art Windows double glazed units with low e glass, curb the flow of heat in and out of your home to an unparalleled degree. This allows you to have expansive glazing whilst still achieving an energy efficient home.
Low E - Soft coating
The high performance coating is applied to allow natural light through without emitting radiant heat, maximising light and energy efficiency. The low e coating is applied to the 3rd surface of the double glass unit, so it is fully encased within the unit and cannot be damaged. At Art Windows, we quote low e as standard in all of our products.

Energy Ratings

U Values and SHGC explained

U-Value

The u-Value measures how readily a window system conducts heat. It is a measure of the rate of non-solar heat loss or gain through it. In simple terms, how much heat is gained from the outside in Summer, and how much heat is lost to the outside in Summer. The lower the U-Value, the more energy efficient your window.

SHGC

SHGC (Solar Heat Gain Coefficient) measures how well a window blocks heat from the sun. Therefore, the lower the SHGC, the lower the amount of heat gain. A window with a low SHGC rating will reduce the amount of heat that comes in through your windows from the outside. We know that our afternoon sun can be murderous, especially in the summertime. A window with a low SHGC cuts down that heat significantly and means lower cooling bills. The SHGC rating on the labels is shown as a number between 0 and 1. The lower the number, the better the window is at blocking solar heat.