Shopping Tips for Windows

• Look for the ENERGY STAR® label.

• Check with local utilities to see what rebates or other incentives are available for window replacement.

• Choose high-performance windows that have at least two panes of glass and a low-e coating.

• Choose a low U-factor for better insulation in colder climates; the U-factor is the rate at which a window, door, or skylight conducts non-solar heat flow.

• Look for a low solar heat gain coefficient (SHGC)—this is a measure of solar radiation admitted
through a window, door, or skylight. Low SHGCs reduce heat gain in warm climates.

• Select windows with both low Ufactors and low SHGCs to maximize energy savings in temperate climates with both cold and hot seasons.

• Look for whole-unit U-factors and SHGCs, rather than center-ofglass (COG) U-factors and SHGCs. Whole-unit numbers more accurately reflect the energy performance of the entire product.

• Have your windows installed by trained professionals according to manufacturer’s instructions; otherwise, your warranty may be void.

• Consider windows with impactresistant glass if you live along a coast or in areas with flying debris from storms.

Source of Information : Energy Savers