It is true that repairing your window is a lot less expensive than window replacement, but sometimes, you just cannot overlook the importance of replacing your windows for better security and more functionality. Whether you should replace your window or have it repaired can confuse you a lot, and that is when you can consider the following point to make a decision.
You have jammed sashes. You can repair your windows in this situation. Sometimes, simply rubbing the bottom of a candle against the bottom of your window may make it more functional. in case of rot and decay, it is better to have it replaced. Still, it is a good idea to talk to a pro because they may be able to repair broken parts.