The way they are constructed, makes double hung windows very popular. Cleaning double hung windows are easier than windows based on a spiral or string system because they won’t allow the sash to drop out when you are cleaning them. Double hung windows tilt in a way that uses a flush fitting tilt release which is more attractive than screwed in tilt release systems that are more commonly used. You may find that choosing a quality window is difficult because of the overwhelming number of options. A solid warranty offered by a quality manufacturer as well as your budget should be important factors in the window decision you make. Windows are a large investment and if you pick wisely you can save money over the long run by improving your energy efficiency. In order to save money in the future you may be wise to spend a little more on your windows now..