The Differences Between Torsion and Extension Springs

Door opening systems generally utilize torsion or extension springs to effectively manage the counterweight.

Most homeowners rarely research the components of a garage door, but many have likely heard of torsion and extension springs. These two types of springs play a crucial role in managing the counterbalance system, which offsets the weight of the door to ensure smooth and reliable operation. Door opening systems generally utilize torsion or extension springs to effectively manage the counterweight.

So, if both types of springs serve the same function, what sets them apart?

Torsion Springs vs. Extension Springs

While various spring types can be used in a garage door’s counterbalance system, the most common choices are torsion and extension springs.

Torsion Springs

Torsion springs are the most widely used and modern option for garage doors. They come in various sizes and lengths, carefully calculated based on the door’s weight, height, and track radius. These large springs are mounted above the garage door and operate by winding and unwinding in a controlled motion. When engaged, they slide into a channel where lifting cables are attached.

Benefits of torsion springs include:

• Durability and longevity: Although torsion springs are more expensive than extension springs, they last significantly longer, typically between 15,000 and 20,000 cycles.

• Less wear and tear: The smooth, steady movement provided by torsion springs keeps the door well-balanced, reducing strain on other components. As a result, the garage door opener experiences less stress when lifting and lowering the door.

• Improved safety: If a torsion spring breaks, it remains inside its shaft, producing only a loud noise. In contrast, broken extension springs can snap off, posing risks of property damage and injury.

Extension Springs

Extension springs are an older technology but remain a common choice due to their lower cost, making them a practical solution for small garages. Unlike torsion springs, they require minimal overhead space since they are installed along the sides of the garage door and extend when the door operates.

Although widely used, extension springs come with certain drawbacks:

• Shorter lifespan: Typically lasting about 10,000 cycles, extension springs require more frequent replacement than torsion springs.

• Higher maintenance needs: These springs operate with a jerking motion, causing additional wear and tear on the door’s components.

• The Differences Between Torsion and Extension SpringsSafety concerns: If an extension spring snaps, it can detach and cause serious injury or damage. However, when properly maintained and equipped with safety cables, they remain a safe option for many garages.

Whether a garage door relies on torsion or extension springs, the experts who provide professional maintenance can recommend safe, efficient replacements. For those uncertain about their current spring system, trained technicians are available to answer questions and recommend the best option based on daily usage and budget.