11.   Modern double-glazed thermal replacement windows, for example, are highly efficient, easy to clean, simple to use and nice to look at.

12.   Q. I am putting in replacement windows.

13.   Q. I have new replacement windows, just the movable sash.

14.   Q. I am putting in vinyl replacement windows, just the movable sash.

15.   Replacement windows are expensive, but, with modern energy-efficient designs, they eventually pay for themselves in energy savings.

16.   Replacement windows with screens that stay in place year round also should be cleaned and repaired.

17.   Since they are roped and weighted, they never need adjusting and can be weatherstripped easily, making them as tight and as well-insulated as any replacement window.

18.   The replacement Pella windows are well above the usual mediocre quality seen in many New York buildings.

19.   The replacement window might have made the room much tighter than it was, so that water vapor builds up in the closet and condenses on cool surfaces.

20.   This increased efficiency is not necessarily a reason to run out and get replacement windows.