Broken garage door springs replaced in Port St. Lucie the same day, in pairs, sized to the door
The spring is the part that does the lifting. When it breaks there is a bang, the door becomes dead weight, and the opener either strains or refuses. Nothing else about the door is wrong, which is why a spring job should never turn into a new-door pitch.
Two spring systems show up on Treasure Coast homes. Torsion springs, one or two coils on a steel bar above the door, are on nearly every door installed since the 1990s and on most of the doors in Tradition and St. Lucie West. Extension springs, a pair of long springs stretched along the horizontal tracks, are on many of the older GDC-era homes in Port St. Lucie and Fort Pierce. Both are rated by cycles: one open and one close is a cycle, and the standard spring is good for about 10,000. A door that opens five times a day uses that up in five or six years. The technician measures the wire size, inside diameter and length of the broken spring and weighs the door, because a spring sized by guesswork leaves the door heavy or makes it shoot up.
Salt air changes the math here. Pitting on the coil surface is where a fatigue crack starts, and a spring that would have gone 10,000 cycles in Orlando may quit at 6,000 in Jensen Beach or on the east side of Fort Pierce. Two things help: a galvanized or powder-coated spring, which costs a little more and resists the pitting, and a longer, heavier spring wound for 20,000 or 25,000 cycles, which puts less stress on the steel every time the door moves. For a west-of-US-1 house that is a nice-to-have; for a house that smells the Indian River Lagoon it is the sensible choice.
Replacing both springs on a two-spring door is the norm, not an upsell. They were installed on the same day and have done the same cycles, so the survivor is typically within months of the same failure, and a second trip costs more than the second spring. On a single-spring door the technician will often suggest converting to a pair, which halves the load on each spring and gives you a door that still lifts by hand if one fails later. Cables, bottom brackets and the center bearing are checked at the same time, because a rusted bracket under a fresh spring is a cable job waiting to happen.
What the visit covers
Measured, not guessed
Wire gauge, inside diameter and length taken off the broken spring and the door weighed, so the new pair balances the door at waist height.
Replaced as a pair
Both torsion springs, or both extension springs, with new safety cables on extension systems. The second spring is on the same clock as the first.
Coated springs for salt air
Galvanized and powder-coated springs stocked for the homes east of US 1 and along the lagoon, where pitting shortens spring life.
High-cycle options
Springs wound for 20,000 to 25,000 cycles for busy two-car doors, golf-cart doors and anyone who wants to do this once a decade.
Brackets and bearings checked
Bottom brackets, cable drums and the center bearing inspected for rust and wear while the shaft is unloaded, replaced if they would fail next.
Balanced and tested
Spring tension set so the door holds at any height, then the opener force reset so it stops straining against a door it no longer has to lift.
What spring repair runs on the Treasure Coast
| Work | Usual range | What moves it |
|---|---|---|
| One torsion spring, standard cycle, fitted | $220 – $380 | Door size and wire gauge |
| Torsion pair, standard cycle, fitted | $320 – $560 | The usual job on a two-car door |
| Torsion pair, 20,000–25,000 cycles | $420 – $700 | Twice the life for a third more |
| Coated or galvanized pair | +$40 – $90 | Recommended within a mile of salt water |
| Extension spring pair with safety cables | $200 – $380 | Older single-car and GDC-era doors |
| Convert one spring to two | $380 – $650 | Halves the load on each spring |
| Center bearing or end bearing plate | $40 – $110 | Replaced while the shaft is out |
Ranges are 2026 figures for St. Lucie and Martin counties, meant for budgeting. The number that counts is the one the technician writes at your house before any work begins, with parts and labor on separate lines. Quotes for new doors and openers are free and hold for 30 days.
Jobs like yours
Asked by homeowners here about spring repair
Why did it bang so loudly?
A torsion spring holds hundreds of pounds of stored energy. When the steel finally cracks, that energy releases in an instant and the sound echoes through the house. The spring is now in two pieces on the bar, and the door has lost its counterweight.
Can I just replace the one that broke?
You can, and we will if you insist, but the other spring was installed the same day and has done the same cycles. It usually fails within months, and then you pay a second trip fee for a job that would have cost one spring's worth of parts the first time.
Is it safe to open the door by hand while I wait?
No. Without the spring, a two-car door weighs 200 to 300 pounds. People hurt their backs and crush fingers trying it, and a door raised by hand with a broken spring can drop. Leave it closed and keep the red cord alone.
How long does the spring job take?
About an hour for a torsion pair, a bit longer for extension springs with safety cables. The technician arrives with springs in the common sizes, so the job is usually done on the first visit.
Does salt air really matter this far from the beach?
On the barrier island and along the lagoon in Jensen Beach, Fort Pierce and Vero Beach it matters a lot. In Tradition and the west side it matters less, but a coated spring is still a small premium for a part you want to replace as rarely as possible.
Will a new spring fix my opener straining?
Almost always. The opener was never meant to lift the door; it moves a balanced door. Once the springs carry the weight again, the motor runs quietly and the force settings go back to normal, which the technician checks before leaving.