wood replacement windows - windows replacement

We performed wood a total of about 100 simulations, estimating energy use for the six test case residences modeled with the current windows and with each of five replacement options. Thirty McLean Gardens residents responded to our request for a waiver to access utility records, and we checked our simulation results replacement for the existing-windows case against these bills, tweaking some of our assumptions as a result. We also did some basic sensitivity runs to evaluate the effect of orientation and shading.The results brought some windows surprises (see Figure 3 for typical results for one apartment type). The first is the large projected heating savings for the storms-only wood and replacement replacement, an windows option with a far lower cost than full window replacement. This results from the combined effects of reduced infiltration and the estimated reduction in U-value attributable to a tighter system.

Equipment sizing. The higher-performance window replacement options would allow reduced sizing of the residential unit heat pumps, as the heat pumps are wood eventually replaced. The highest-performance replacement option is estimated to reduce peak heating loads 33%-47%, and peak cooling loads 19%-33%. This would allow a replacement heat pump sized at least one step smaller than the replacement existing pump in pretty much every residential unit, yielding windows reduced wood replacement cost, reduced peak loads on the utility, reduced operational noise level, and possibly better dehumidification performance during the cooling season.There would be little replacement or no equipment sizing benefit associated windows with the clear glass window replacement wood options, however. This is because the clear glass options produce only small peak replacement cooling windows and wood load reductions and peak heating and peak cooling are roughly equal replacement in these buildings. In a colder climate, windows where heating loads are dominant, the clear glass options would also allow equipment size reduction in many cases.