Caulk those old windows.. Don’t replace them. The majority of drafty windows we find are not the window itself but just in need of a little tightening up around the interior trim. Running a couple beads of clear caulk on the interior wood casing will a lot of times save you more than replacing the windows. This is a simple job which can be completed in a few hours with about $16 in supplies. Primetime Energy Services provides home owner’s a fair price for high efficient replacement windows.