Windows can have an enormous effect on a consumer's energy bills. Experts predict that 25 to 30 percent of heat loss comes through the window and window frame. Therefore, buying energy-efficient windows may cost more at the time of initial purchase, but they will pay for themselves over the windows' lifetime. Windows in a structure have direct contact with the elements without any insulation. Poorly constructed windows can let out cool air in summer and warm air in winter. Thus, windows can be the single most important element when it comes to heating costs or cooling costs. In winter, windows can let in sunlight to warm the house through natural means, and letting in natural light in wintertime also can improve mood and fight against ...

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