Garage Door Spring Replacement in Flower Mound
Spring replacement, pair installed: $200 to $400
Spring replacement on a standard residential door in Flower Mound is $200 to $400, both springs, installed and balanced, and it is nearly always a same-day job because the common sizes ride on the truck. The first sign is a bang from the garage. The second is a door that goes up a few inches and stops.
What the spring does
A double garage door weighs 150 to 300 pounds. The springs carry nearly all of that, which is why a balanced door can be lifted with one hand. The opener only guides it. When a spring breaks, the opener suddenly has the whole weight to move, and it will not.
Torsion springs sit on a steel shaft above the door and twist to store energy. Most doors in Denton County built since the 1990s use them. Extension springs run along the horizontal tracks on each side and stretch instead of twist. They are common on older single-car doors and lighter doors.
Why they break
Springs are rated in cycles, one cycle being one open and one close. The steel flexes every time and eventually fatigues. Rust speeds it up, and a spring that fatigued through a hot summer tends to let go on the first cold morning, when the steel contracts. A spring that is the wrong size for the door, which happens when a heavier insulated door replaces a lighter one without new springs, fails early and strains the opener the whole time.
What the replacement visit looks like
The tech weighs the door or reads the spring wire size, inside diameter and length, then selects springs rated for that exact weight. Both springs are replaced, not just the broken one. On torsion doors the new springs are wound with proper bars, the cables are checked at the drums, and the door is balanced so it holds still at any height. Extension springs get safety cables run through them so a future break cannot send the spring flying.
Before leaving, the tech resets the opener force and travel limits and tests the safety reverse. A fresh spring changes how the door moves, and an opener set for the old broken-spring weight will slam it.
The whole job takes about an hour on most doors.
What it costs
Spring replacement for a standard residential door runs $200 to $400, both springs, installed and balanced. High-cycle springs add a modest amount and last two to three times longer. The service call is included when you go ahead with the work.
If you leave it
A broken spring puts the full weight of the door on the opener, which strips its gear if you keep pressing the button, and a door with no counterbalance cannot be lifted safely by hand. Leave the door down.
Call (469) 947-3776 and say whether the door is single or double and whether the spring sits above the door or along the tracks. That sets the wire size before the tech leaves.