Low Emissivity (Low-E)

Low-emissivity, or low-E, glass has been treated with an extremely thin coating that reflects heat while allowing light to pass through. Windows made with this type of glass help prevent heat transfer, are more energy efficient, and can help reduce the amount of heating and cooling needed in the home.

In very cold climates, low-E glass prevents heat from escaping by reflecting it back into a room; in very warm climates, low-E glass reflects the heat from the sun away from the window and helps keep a room cool.

Thanks to improvements in low-emissivity technology, the coating on a low-E window is transparent and has very little effect on visibility.