Torsion vs. Extension Springs in Burlingame: Which Does Your Door Need?
2026-08-30 7 min read
If you've ever watched your garage door glide up effortlessly, you've witnessed spring engineering at work. Most homeowners don't realize their door relies on one of two spring systems: torsion or extension. Understanding which one sits above your door isn't just trivia. It affects repair costs, replacement timelines, and whether you can safely handle maintenance yourself. We'll break down both types so you know exactly what to expect when something goes wrong.
Torsion Springs: The Heavy Lifters
Torsion springs mount horizontally on a shaft above your garage door opening. They store energy by twisting (hence the name) rather than stretching. When you open the door, the spring unwinds, counterbalancing the door's weight so the opener doesn't strain.
Here's what makes them special: torsion springs are incredibly efficient. A single spring often handles the entire load of a heavy door. They're also compact, durable, and generally last 7 to 9 years with normal use. Most newer homes in Burlingame and across the Bay Area use torsion springs because they're safer and more reliable.
The trade-off? Torsion springs require precision installation. The shaft, bearings, and brackets must be perfectly aligned. If a snapped spring occurs, the door becomes genuinely heavy and dangerous. This is why we don't recommend DIY replacement for torsion systems.
Extension Springs: The Older Alternative
Extension springs run vertically along each side of the door opening. They stretch and contract to provide lift assistance. You'll find them more often in older homes or budget installations.
Extension springs are simpler to understand mechanically. They're also cheaper upfront. But they come with real limitations. Because the load splits between two springs, each one works harder. This means shorter lifespan, typically 5 to 7 years. They also require safety cables running through them. If a spring breaks, the cable catches the spring and prevents it from flying across the garage.
Extension springs do fail more frequently than torsion springs. When they do, homeowners often notice the door becoming lopsided or jerky during operation.
**Need garage door springs in Burlingame today?** Call 650-749-7196. we cover same-day service across the area.
How to Tell Which Type You Have
Walk into your garage and look above the door. If you see a horizontal shaft with a spring wound around it, that's torsion. If you see two springs running up the sides near the cables, those are extension springs.
This matters when you need a repair estimate. Torsion spring replacement typically runs higher in labor because it demands certified technician expertise. Extension spring work is generally faster, though the springs themselves fail sooner. For a detailed breakdown of what you'll actually pay, read our guide to spring replacement cost in Burlingame.
Safety Differences That Matter
Torsion springs are under enormous tension. A failure is violent. The spring can snap with enough force to injure someone nearby or damage property. That's why building codes require regular inspection and professional replacement.
Extension springs are safer in that regard, but only because safety cables contain them. Those cables wear out, though. If a cable breaks before the spring does, you lose that protection. Both systems demand respect and professional handling.
If you've experienced a spring failure already, check what to do after a snapped spring and don't attempt removal yourself.
When to Replace vs. Repair
Here's the honest answer: springs aren't repaired. They're replaced. Once a spring loses tension or breaks, it's done. A professional can evaluate your full spring system and recommend replacement timing before failure strikes.
If your door is over 8 years old and you have torsion springs, replacement soon is smart. Extension springs should be checked every 5 years. Preventive replacement costs less than emergency service and keeps your door operating smoothly.
Getting an Accurate Estimate
Spring type, door weight, and your current setup all affect cost. That's why a technician needs to see your door in person. Schedule a free quote and we'll assess whether you need torsion, extension, or a system upgrade. Same-day service is available for many spring jobs across Burlingame and nearby areas.
Don't let a broken spring leave you stranded. The right spring type, installed correctly, works quietly for years. That's the difference between a door you forget about and one that constantly demands attention.
Frequently Asked Questions
Can I replace my extension springs with torsion springs? Yes, but it requires structural modifications. Your door opening needs reinforcement, new hardware, and a compatible opener. It's an upgrade many homeowners make, though cost is higher upfront. A technician can assess your door and provide an estimate for the conversion.
How do I know if my spring is about to fail? Listen for creaking or grinding sounds. Watch for the door moving unevenly or stopping mid-travel. If opening the door manually feels suddenly much heavier, a spring is losing tension. Call for inspection before total failure occurs.
Which spring type is better for coastal Burlingame weather? Torsion springs handle salt air better because they're more enclosed. Extension springs expose more metal to corrosion. Either way, annual maintenance in coastal areas prevents rust and extends spring life significantly.
How much does spring replacement cost near me? Torsion spring replacement typically ranges from $200 to $400 per spring, plus labor. Extension springs run $100 to $200 each. Final cost depends on door size, spring count, and whether both need replacement simultaneously.
Can I replace one spring if only one is broken? For extension springs, yes, though replacing both is smarter since they wear at similar rates. Torsion springs typically come in pairs, and both should be replaced together to maintain balance and prevent premature failure of the remaining spring.