That are some signs showing you need to replace your old windows as below: 1. Your Energy Bill increased Older houses with a single-pane windows don’t have suitable insulation. This causes your air conditioning and heating system to work difficulty. If you want to save money you should replace your old windows with double or triple-pane windows. New windows are energy-efficient and prevent air circulation to get in and out your house. 2. Windows are damaged or wet A very obvious sign that is telling you to change your old windows is that your window framed are cracked or rotting. If your can dry the wet areas on the glass panels and you can see the moisture that is building up between the panes or if you can hear the whistling sound of wind on a windy night, then you should act for replacing your old windows. 3. You are having problem in opening and closing windows If you have a difficult time in opening and closing your windows, many reasons can cause that. Such as dirt or dust, or a very tight spring or an issue with the roller performance. You should be able to open, close and lock your windows without any problem. If any of your window’s face one of these problems, you have to think about replacing them because this can cause air to move out of your home space and it can lead to safety issues as well. 4. You need a soundproof environment If your windows can’t prevent the outside noises from coming inside, then you have to replace them. Single-pane windows will bring the sound vibrations inside from outside environment to your house much easier than double or triple-pane models. Moreover, new energy-efficient windows will also soak up the sound waves before they enter your house.