What are Low-E windows?
Low-E windows are windows which have a special coating that limits the transfer of heat through the window. In cold weather, less heat escapes through the window glass, keeping more heat inside the house. As a result, your furnace doesn’t need to work as hard and you save on your energy bills. In warm weather, Low-E windows keep the heat out, so the inside of your house stays cooler. As a result, your air conditioner doesn’t need to work as hard and you save on your energy bills. Low-E coatings have about the same insulating value as an additional pane of glass – so a double-glazed low-E window insulates about as well as a triple-glazed clear window.
