Torsion vs Extension Garage Door Springs: What to Know

TL;DR: Torsion springs sit on a metal rod above the garage door and twist to store energy, lasting roughly 15,000 to 20,000 open-close cycles (7-12 years of typical use). Extension springs stretch along the horizontal tracks on either side of the door, cost less upfront ($30-$60 per spring vs. $60-$120 for torsion), but usually wear out faster and carry more risk if they snap without a safety cable. Replacing either type involves stored energy that can cause serious injury, so most manufacturers and safety guides recommend hiring a licensed technician rather than doing it yourself.

_Last reviewed: July 2026 · 7 min read_

Your garage door won't budge, or it slams down faster than it should, and you're trying to figure out what's actually broken before you call anyone. The two springs used on nearly every residential garage door — torsion and extension — look and behave differently enough that a five-minute look tells you which one you have and roughly what you're facing.

Okoniq Property Hub lets you log the install date, spring type, and cycle count for your garage door so you know when a replacement is due before it fails on you.

What's the difference between torsion and extension springs?

Torsion springs mount horizontally on a metal shaft directly above the closed door, and they store energy by twisting when the door closes. Extension springs run along the horizontal tracks on each side of the door and store energy by stretching, then contracting to help lift the door.

Torsion systems are the standard on most garage doors built after the early 2000s, especially anything over 7 feet wide, because they distribute force more evenly and put less strain on the opener. Extension spring setups are still common on older homes and lighter doors, and they're recognizable by the long spring stretched above the track, usually with a thinner safety cable threaded through the center to catch the spring if it breaks.

The practical difference for you as a homeowner comes down to how the door behaves when something's wrong. A torsion spring failure usually means the door won't lift at all and feels dead weight heavy when you try by hand. An extension spring failure can let the door slam shut suddenly, which is why the safety cable matters so much on that setup.

How do you tell which type your garage door has?

Look above the door when it's closed. If you see a single spring on a horizontal bar centered over the door opening, that's torsion. If instead you see springs running parallel to the tracks on the left and right sides of the door, stretched out above the horizontal track section, that's extension.

Most doors installed since 2010 use torsion springs, often paired with a single or double-spring setup depending on door weight — heavier insulated doors over 16 feet wide sometimes need two torsion springs working together. If your door was installed before 2000 and hasn't been upgraded, extension springs are more likely, particularly on single-car doors.

This same instinct for identifying a component before assuming the worst applies elsewhere in the house. Just like figuring out whether you have 100 or 200 amp electrical service before assuming your panel needs an upgrade, spending two minutes looking at your spring setup saves a wasted service call.

Which one lasts longer and costs more to replace?

Torsion springs generally outlast extension springs and cost more per unit, but the total cost of ownership often favors torsion once you factor in fewer failures. A torsion spring is rated for 15,000 to 20,000 cycles, meaning roughly 7 to 12 years for a household that opens the garage 3-4 times a day. Extension springs are typically rated lower, closer to 10,000 cycles, putting replacement at the 5 to 8 year mark under similar use.

| | Torsion Springs | Extension Springs | |---|---|---| | Typical lifespan | 15,000-20,000 cycles (~7-12 yrs) | 8,000-10,000 cycles (~5-8 yrs) | | Cost per spring | $60-$120 | $30-$60 | | Failure behavior | Door won't lift, no sudden drop | Can cause sudden slam without safety cable | | Common on | Doors after 2000, heavier/wider doors | Older homes, lighter single-car doors |

Total replacement including labor runs $200-$350 for a torsion spring job and $150-$250 for extension springs, though most technicians recommend replacing both springs in a pair at once even if only one has failed, since the second is usually close behind on cycle count.

Can you replace garage door springs yourself, or should you call a pro?

Most safety guides and manufacturers recommend against DIY replacement because torsion springs in particular hold enough stored energy to cause broken bones or worse if the winding bars slip. Extension springs are somewhat more forgivable to handle but still carry real risk without the right clamps and eye protection.

The math on hiring out isn't close enough to justify the risk for most owner-operators: a $150-$350 service call versus a trip to the ER or a door that comes crashing down mid-repair. This is the same logic that applies to upgrading 2-prong outlets to 3-prong safely — some jobs look simple until you're the one holding a wound spring or a live wire, and a licensed pro carries insurance for exactly that moment.

If you do want to handle inspection yourself, that part's safe: check for visible gaps in the coils, rust buildup, or a spring that looks stretched or sagging compared to its neighbor, and note the date so you can track wear over time.

How often should garage door springs be inspected?

Twice a year is the standard recommendation, once in spring and once in fall, alongside other seasonal maintenance you're probably already doing. Look for rust, gaps between coils, and uneven wear between the two springs if your door has a pair.

Pairing spring checks with a broader seasonal routine catches problems before they compound, the same way checking your foundation every spring catches small cracks before they widen. A five-minute visual check costs nothing and tells you if a technician visit is worth scheduling before the spring actually fails and strands your car inside.

FAQ

How much does it cost to replace garage door springs?

Torsion spring replacement typically runs $200-$350 including labor, while extension springs run $150-$250, with most technicians replacing both springs in a pair even if only one failed.

How long do garage door springs last?

Torsion springs last about 15,000-20,000 cycles, roughly 7-12 years of typical daily use, while extension springs last closer to 8,000-10,000 cycles, or 5-8 years.

Why did my garage door spring break?

Springs fail from normal metal fatigue after their rated cycle count, accelerated by rust, lack of lubrication, or extreme temperature swings that make the metal more brittle.

Can one broken spring cause damage if not replaced immediately?

Yes. Running a garage door opener against a single failed spring puts extra strain on the motor and the remaining spring, often causing a second failure or opener burnout within weeks.

What size torsion spring do I need?

Spring size depends on your door's weight, height, and drum diameter, which is why most technicians measure the existing spring's wire gauge and length rather than guessing from door dimensions alone.

This is educational information, not safety or repair advice. Call a licensed garage door technician if you're unsure about spring type, tension, or replacement — stored spring energy causes serious injuries every year when handled without the right tools.