Springs have a cycle life meaning each time the door goes up and comes back down, that's one cycle. Springs range anywhere from five thousand to thirty thousand cycles.
Be careful about companies that offer a two-year warranty and then companies that provide a lifetime warranty; typically, you're talking about cycle life, but I will tell you there are a lot of companies out there that offer a lifetime warranty, and then they charge you a crazy amount of money for the labor to get the door working.
Spring repair is our specialty. we offer the highest cycle life springs in the market. It doesn't matter what brand or model door you have; we carry the replacement springs on all of our trucks.
Spring replacement is by far our most common service. If you have a garage door with two springs and only one is broke, we need to replace them both. We have tried to replace just the broken one, only to have to come back a few short months later and do the other one, go figure!.