Smaller energy bills > replacing all single-glazed windows with B-rated double glazing could save you around £170 per year on your energy bills.
A smaller carbon footprint > by using less fuel, you’ll generate less of the carbon dioxide that leads to global warming - typically, 680kg a year.
A more comfortable home > energy-efficient glazing reduces heat loss through windows and means fewer draughts and cold spots.
Peace and quiet > as well as keeping the heat in, energy efficient-windows insulate your home against outside noise.
Reduced condensation > energy-efficient glazing reduces condensation build-up on the inside of windows.
the benefits of energy-efficient windows