Does the number of panes matter? Not all panes are created equal!
One of the contributing factors of a window's energy-efficiency is how many panes a window has. Are dual paned windows just as energy-efficient as triple-paned windows?
Though it is true that a dual-paned window with a soft-coat Low-E coating will usually have better thermal performance numbers than a triple-paned window without a Low-E coating, it is equally true that a triple-paned window with two surfaces coated with a Low-E soft-coating is more energy-efficient than a dual-paned window with a soft-coat Low-E coating.
Energy Star states:
"All energy efficient windows have at least two panes, but not all double-paned windows are energy efficient. Twenty years ago, double-paned meant energy efficient; today, advanced technologies have enabled the development of windows that are much more efficient than traditional clear-glass double-paned windows."
Two of those advanced technologies include multiple soft coating and filling the spaces between the panes with inert gas. Wholesale Windows Canada offers both!