It''s clear that energy buy savings alone won''t replacement justify window replacement (see "Other Considerations in Window Replacement"). If windows are to be replaced in any case, however, the analysis provides justification for an upgrade to high-performance glass. At a cost of $60 per windows window, the payback on low-e argon filled glass is a reasonable 9 years.And there are other issues to be considered. The companion study on window condition estimated the current value of deferred maintenance at over $1 million, which buy reduces the comparative replacement cost of window replacement. Comfort and other effects may be difficult to quantify in dollar terms, but they have important windows costs and benefits. Energy saving is just one factor to be weighed in this complex and expensive decision.Energy buy savings resulting directly from window replacement is just one of many things to consider in deciding whether and when to undertake replacement a major window replacement project. Several windows other important buy factors are discussed below.

This replacement kit makes replacing old, energy wasting windows, fast and simple. Each kit comes complete with two sash, two vinyl compression balances, one vinyl parting stop, two vinyl sash stops, and all necessary installation hardware. Sash are available primed for painting or replacement aluminum clad in assorted colors. Vinyl casement and awning windows now feature Truth Maxim commercial-grade hardware to make them easier to operate, says the firm. All casement and awning windows come standard with fold-down handles to provide extra room for drape and blind clearance around windows. The firm manufactures numerous other products. 724-465-1800. www.gorell.com, Circle 195. Fusion-welded vinyl windows are perfect for new windows or remodeling applications because they resist water, corrosion, and mold, claims the firm. Available in white and almond, they feature removable nailing fins. Muntins are optional. The company buy also manufactures aluminum-clad replacement and wood windows as well as patio doors. 800-877-9482. www.summit windows.com. Circle 184. Kolbe & Kolbe Millwork offers vinyl windows. The Wausau, Wis.based, high-end wood window manufacturer will supply a wide selection of vinyl window designs - radius, bow, bay and geometric - through its new KVW Windows & Doors division. The new line includes double hung models, sliders, casements, awnings and sliding doors. A new production plant, located in Manawa, Wis., was scheduled to begin operating in February. ProFinish vinyl windows come in double-hung, single-hung, casement, slider, windows picture, and geometric-shaped styles. buy The windows, which won''t pit, peel, or chalk, claims the maker, feature welded frames and sashes and integral J-channels. Numerous glass options and grids are available. 800-542-9118. www.simonton.com. Circle 182. Monument vinyl windows come in white and almond and feature fusion-welded mitered corners and multiple hollow chambers for strength, replacement says the firm. The windows come in casement, awning, double-hung, single-hung, and sliding styles. A number of glazing and glass options are available. 800-223-4873, windows www.hurd.com. Visions 2000 vinyl windows are maintenance-free and won''t rust or corrode, says the firm. The windows are available in single-hung, double-hung, casement, and awning styles. The line comes standard buy and replacement with integral nailing fins and fusion-welded corners. Optional grilles windows and glazes also are available.