Torsion Spring vs Extension Spring: What Fort Worth Homes Actually Use

Both spring types do the same job — counterbalancing the door’s weight — but they work differently, fail differently, and aren’t interchangeable. Here’s how to tell which one you have. Whichever type you have, our technicians carry both torsion and extension spring stock, so most garage door spring replacement calls are finished in one visit.

Torsion Springs

Torsion springs mount horizontally on a metal shaft directly above the door opening, and they’re the standard on most garage doors installed in Fort Worth over the last two decades. They work by twisting (torsion) as the door closes, storing energy that’s released to help lift the door back open. Because the shaft and springs sit above the door on a bracket, a torsion system generally provides smoother, more controlled operation and tends to last longer under normal use than an extension setup.

Extension Springs

Extension springs run horizontally along the upper tracks on either side of the door and stretch (extend) as the door closes. They’re more common on older Fort Worth homes — often houses built before the early 2000s — and while they’re a perfectly functional design, they typically require separate safety cables running through the spring itself, since a failing extension spring can otherwise become a projectile if it lets go.

How to Tell Which One Your Door Has

Look straight above the closed door. If you see a single, thick spring wound around a shaft that runs the width of the door, that’s torsion. If instead you see two long, thinner springs running along the horizontal tracks on either side, roughly parallel to the ceiling, that’s an extension setup.

Why the Distinction Matters for Repair

Both spring types fail the same way — a loud bang, followed by a door that’s suddenly too heavy to lift — but they require different tools, techniques, and often different safety precautions to replace. Torsion springs need specialized winding bars and are wound under significant tension; extension springs need the safety cables checked and replaced alongside the springs themselves if they’re worn. Neither is a safe DIY repair. Full detail on symptoms, our process, and what a replacement actually involves is on our spring repair page.