Open Sesame Garages · Oklahoma City
How much does it cost to convert extension springs to torsion springs?
A residential extension-to-torsion conversion typically costs $400 to $800 installed, because it is not just springs — the price includes a torsion shaft, a center bearing bracket, two end bearing plates, cable drums, new lift cables, and about two to three hours of labor. Open Sesame Garages quotes the full number upfront before any work begins.
What moves the price within that range
- Door weight and size — a heavy insulated double door needs larger wire and longer springs than a light single door.
- Headroom — if there is under about 12 inches above the opening, low-headroom or rear-mount hardware is required, which costs more.
- Spring cycle rating — standard springs are rated around 10,000 cycles; high-cycle springs (20,000-50,000) add cost upfront and last considerably longer.
- Condition of the surrounding parts — worn rollers, frayed cables, or a soft header that needs reinforcing can add to the job.
- Single vs. double door — a double door usually takes a matched pair of springs on a longer shaft.
How it compares to just replacing what you have
A straight spring replacement in the Oklahoma City metro runs $150 to $350 per spring. So converting is genuinely the more expensive choice on the day — you are buying hardware you do not currently own.
The case for spending it: fewer failure points, springs available in ratings extension springs cannot match, and no pulleys or safety cables to maintain. If your springs are due for replacement anyway, converting at the same time means paying for labor once instead of twice.
The case against: if your extension system is healthy, or you are replacing the whole door soon, keep the money. We will tell you that on the estimate.
Related questions
Are there hidden costs after the conversion?
There should not be. A properly executed conversion leaves the door balanced and cycling, and the ongoing maintenance is simpler than the extension system it replaced — lubrication and an annual balance check, with no pulleys or safety cables to replace.
Is a DIY torsion conversion kit cheaper?
Kits sell for a few hundred dollars, so on paper yes. In practice you are taking on winding springs that hold enough energy to lift a 150 to 300 pound door and anchoring a load-bearing bracket into your header. The labor is most of what you are paying for, and it is the part that keeps the assembly on the wall.
Need this fixed, not just explained?
Open Sesame Garages serves Oklahoma City and the surrounding metro with same-day estimates and 24/7 emergency repair.