Window balances are typically held in place by screws that can be tightened or loosened as needed. If the window balance is broken, you can try to fix it by tightening the screws. If that doesn't work, you may need to replace the window balance.

Window balances are one of the most common window repair items. The way they work is that when the window is in the closed position, the weight of the window is transferred to the balance, which in turn pulls on the spring and holds the window up. When you open the window, gravity takes over and pulls the window down. If your balance is broken, it will either not hold the weight of the window or it will not return to its original position after you open or close the window. In either case, you will need to replace it.