Knowing if your door is properly balanced can be a tricky job. The best way to assess balance is the door should remain in place without additional force being applied as well as opening and closing smoothly without making any noise. You can do this by opening your door up to chest high and seeing if it stays in place. If it does not, than its not balanced. Balance can be impacted by several factors, most often the springs are the main factor. First, check the hinges while someone else opens and closes the door. If the hinges are loose and don't stay in place and/or if you have rattling or scraping sounds as it moves back and forth, then this could be a factor. Adjust the screws on each hinge or try installing new ones altogether. If screws are missing, add them. Even if hinges seem tight, its okay to loosen the screws holding them and retighten allowing the hinge to readjust. The most common issue causing an imbalanced door is the spring(s). Springs wear over time and changing seasons (cold to hot weather) can cause a spring to require adjustments. Due to safety concerns we highly recommend you hire someone trained in removing, replacing or adjusting springs. Its very easy to suffer an injury, sometimes severe, when working with springs.