What options do i have?
You can improve the energy efficency of current windows by doing the following
- Adding storm windows
- Caulking and weather stripping
- Using window treatments or coverings
Of course if you have very old windows, replacing them is your best bet. Make sure you replace them with Energy Star Qualified Energy Efficient Windows.
How do i tell if a window is Energy Efficient?
Windows are measured by it's U-Factor. This is a measurement of the window's ability to resist the transfer of heat and cold. U-Factor is the amount of heat transferred through a material. The lower the U-Factor, the slower the rate of heat flow and the better the insulating quality.