Many people think that replacing their old windows will quickly pay for the work in energy savings. In reality, this is rarely the case. Also, Federal Tax incentives and Mass Save Rebates are practically non existent for window work.
New Windows versus Window Replacement
New windows typically cost $1000 or more per window since a trained carpenter is replacing the window frame. Cost is lower if the existing window frame is left in place and a smaller window frame and window is installed inside the existing frame. Companies that advertise “replacement in a day” are selling “window replacements” not new windows. Glass area decreases and they are less aesthetically pleasing.
Double-Pane vs Triple-Pane
Thisoldhouse.com sites triple-pane as 7% more efficient than double-pane :https://www.thisoldhouse.com/windows/reviews/triple-pane-windows-cost This site also includes links to get quotes. More on this is discussed under the tab Steps to Take.
Storm Windows
Back in the days when single pane windows were common, people often exchanged screens for storm windows to reduce drafts during winter months. But storm windows can also be added inside. If you do the work yourself, the cost to add interior 1/4in thick plexiglass storm windows can be about $100 per window. Thanks to Paul Lauenstein and his daughter Zahava for sharing their incredible journey to do a complete energy makeover for under $30,000 on a 50 year old house: click here.
