Most people probably think of windows and skylights only when they’re buying or selling a house, when they get dirty, when they leak, or when the kid next door lobs a baseball through one. Yet the glass in your home is arguably among its most important features, directly impacting the structure’s overall energy efficiency and livability.Well-maintained, operational windows and skylights provide abundant natural light and passive ventilation, and models are available that maximize insulation values as well. If you’ve been overlooking the glass in your home even while you’ve been looking through it, take a moment to reflect on its condition, and whether it’s helping you save energy or costing you money.How windows work in your favorThe advantages glass brings to a home may seem obvious, but a deeper look reveals just how important it really is.