Broken Garage Door Spring Replacement in London
A broken garage door spring usually announces itself with a loud bang, after which the door feels impossibly heavy and the opener strains or won’t lift it. Stop using the door — a broken spring leaves it as hundreds of pounds of dead weight. Spring replacement is a same-day pro job in London, done in matched pairs for $229–$320 including parts, labour, and a 1-year warranty. Winding a torsion spring is under extreme tension and is genuinely dangerous, so it is not a DIY repair.
- A loud bang plus a door that won’t lift almost always means a snapped spring.
- Stop operating the door — running the opener on a broken spring causes more damage.
- Replacement is $229–$320 in London, parts and labour included, with a 1-year warranty.
- Springs are replaced in matched pairs — the second is days behind the first.
- Torsion springs are under extreme tension; replacement is a pro job, not DIY.
How to know the spring is the problem
The classic sign is a bang like a firecracker from the garage, often on a cold morning, followed by a door that won’t open or that the opener tries and fails to lift. Look at the torsion spring on the bar above the door: a clean two-inch gap where the coil separated is the giveaway. On extension-spring doors (springs along the tracks), you’ll see a spring hanging loose or stretched.
Other tells: the door feels far heavier than usual by hand, it opens a few inches and stops, or it slams down faster than normal.
Why you shouldn’t run the door
The spring counterbalances the door’s weight; without it, the opener is dragging the full load. Keep using it and you’ll strip the opener gear, bend the top panel, or pull the door off its track — turning a spring job into a spring-plus-opener-plus-panel job. Leave the door down, disconnect the opener with the red release, and don’t try to lift it by hand.
Why springs are replaced in pairs
On a two-spring door, both springs have cycled the same number of times. When one snaps, the other is usually within weeks of failing too. Replacing both in one visit costs less than two separate service calls and keeps the door balanced — an unbalanced door wears out the opener. High-cycle springs cost a little more up front and last roughly twice as long.
Matched-pair springs, balanced and safety-tested, from $229 with a 1-year warranty — across London + 50 km. Don’t run the door until it’s done.
What replacement costs and how fast
In London, broken-spring replacement runs $229–$320 for a standard residential door, parts and labour included, with a 1-year warranty. Double-car doors with two torsion springs sit at the higher end. We carry the common sizes on every truck, so most replacements are same-day, and we confirm an all-in price before any work — no "$49 spring" bait pricing.
Frequently asked questions
How much does it cost to replace a broken garage door spring in London?
For a standard residential door, $229–$320 including parts, labour, and a 1-year warranty. Springs are replaced in matched pairs, and double-car doors with two torsion springs are at the higher end.
Can I use my garage door with a broken spring?
No. Without the spring the door is hundreds of pounds of dead weight. Running the opener strips its gear and can pull the door off its track. Leave it down and call a technician.
Why replace both springs if only one broke?
Both springs have cycled the same number of times, so the second is usually close behind. Replacing them together keeps the door balanced and avoids a second service call within weeks.
Is replacing a garage door spring a DIY job?
No. Torsion springs are wound under extreme tension and cause some of the most serious injuries in this trade. It should always be done by a trained technician with the right tools.
Related guides
Garage Door Spring Repair Cost in London, Ontario (2026)
Real 2026 numbers for spring replacement in London — torsion vs extension, single vs double, and why a good shop always replaces springs in pairs.
Signs Your Garage Door Spring Needs Replacement
A loud bang, a door that won’t lift, a gap in the coil — the tell-tale signs a garage door spring is failing, and what to do next.
How to Replace a Garage Door Spring (and Why It’s a Pro Job)
What a spring replacement really involves — the winding bars, the tension, the balance test — and why it’s the one repair to leave to a pro.