vinyl replacement windows - windows replacement

Projected Cost SavingsWe calculated cost savings for the residential units in a spreadsheet, vinyl using monthly energy consumption results from Visual DOE and the applicable utility rate, which includes seasonal differences and a block rate that makes energy more expensive after the first 400 kwh. (Visual replacement DOE can do cost analysis, but windows not using the combination of rates that we needed.) vinyl and replacement Similarly, we estimated central plant operating costs by applying commercial electric and gas rates to the estimated monthly energy consumption and demand (see Table 2).The value of energy savings attributable to window replacement fell between $.072 and $.092 per kWh of electric energy windows saved. Estimated total savings across all 720 residential units and the central plants range from about $35,000 per year for storm window vinyl replacement to $91,000 per year for the most efficient windows. replacement These savings represent windows about 5%-12% of the total gas vinyl and electric bills for McLean Gardens residents and plants. The simple payback based on energy savings is estimated at around 65 years for storm window replacement replacement, and over 80 years for full window replacement.

It''s clear that energy savings alone won''t windows 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 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 vinyl on window condition estimated the current value of deferred maintenance at over $1 million, which reduces the comparative cost of window replacement. Comfort and other effects may be difficult to quantify in dollar terms, but they have important costs and benefits. Energy saving is just one factor to be weighed in this complex and expensive decision.Energy replacement savings resulting windows directly from window replacement is just one of many things to consider in deciding whether and when to undertake a major window replacement project. Several other important factors are discussed below.