While replacing just one spring may be possible and cheaper than replacing two, the problem is that, over time, the springs will inevitably wear down at different rates, leaving one with more tension than the other. This unbalanced pressure puts extra stress on your system as a whole and may require you to look for another replacement sooner rather than later. The industry standard is to always replace both springs when either they have broken or worn out. Going this route ensures that both springs work together evenly and safely for years to come, giving you peace of mind that your garage door system won’t malfunction suddenly!