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Why Replace Both Torsion Springs If Only One Fails

One of the questions most commonly questions asked of a Garage Door service technician is why both torsion springs need to be replaced when only one is broken. While all overhead garage doors have two torsion springs, many do.  The size, weight, and cost of the door are normally the reasons why.

As the metal in the springs fatigue over time and with use, they may do so at a different rate. Some of this could be due to imbalance in the door. Metal will also fatigue at slightly different rates, and this difference can become more noticeable over time.

The underlying reason to replace both springs when one fails is that, in the long term, it is more economical to do so.

  • If one torsion spring breaks, the other is definitely fatigued and is likely near failure.  It not only has been used, it has been sharing the brunt of the load. Replacing one spring will shorten the life of the new spring as it now has to carry an inordinate share of the load.  The old spring will almost certainly have to be replaced in the short term, and the spring that has just been added not is ‘unmatched’. The door is now all but impossible to balance and the cycle of replacing springs continues.
  • This amounts to increased costs: more service repair visits and purchases of springs at a rate that is greater than the purchase of two springs at a time, assuming the door is balance.
  • Garage doors systems are designed to last up to 20 years, assuming the doors remain balanced.

Why should both torsion springs be replace when only one fails?  Because doing so saves money in the long run.  Keep the door balanced and the door should last a long time, but if there is as failure, be sure to call the Garage Doctor here in Denver, CO, to get the best repair service and have BOTH springs replaced.

 

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