2026-08-31 7 min read
Garage door springs come in two main types: torsion and extension. Torsion springs sit above the door and twist to lift the weight. Extension springs run along the sides and stretch to do the same job. Most homes in Redwood City use torsion springs because they're smoother, safer, and last longer. A snapped spring means your door won't open, and that's when you need help fast.
Springs carry roughly half the weight of your garage door. A typical residential door weighs 300 to 400 pounds. Without working springs, the opener motor would burn out in weeks trying to do all that lifting alone. Springs distribute the load and make the whole system efficient. When one fails, the other gets overworked, and failure cascades quickly. See our guide on how long do garage door springs last in redwood city?.
Both types can wear out. Torsion springs last 7 to 9 years on average with normal use. Extension springs may last 5 to 7 years. Climate matters too. Redwood City's mild weather is kinder to springs than extreme heat or cold, but salt air near the coast can accelerate rust and corrosion over time.
Torsion springs twist and unwind to lift your door. They're mounted on a horizontal rod above the door opening. Because the spring is under constant tension, a snapped torsion spring can be dangerous. It won't whip around like an extension spring, but the sudden release of energy is still powerful. Read about smart garage door openers: a complete buyer.
Torsion springs work better for heavy doors, frequent use, and commercial applications. They're quieter and more balanced. If your door opens unevenly or jerks to one side, a broken or weakened torsion spring is often the culprit. Many homeowners notice this problem immediately because the door feels heavy and sluggish.
Extension springs run horizontally along each side of the door frame. When the door closes, they stretch. When you open it, they contract and help lift the load. Extension springs are cheaper upfront, which is why some older homes and budget installations use them.
The trade off: they're riskier. If an extension spring snaps, it can fly across the garage. Modern safety cables run through them to contain the spring, but the hazard remains real. If you have extension springs and notice uneven door movement, don't ignore it. One spring breaking usually means the other will follow within months.
**Need garage door springs in Redwood City today?** Call 626-210-3836. We cover same-day service across the area and provide a free estimate before any work starts.
A snapped spring is obvious: your door won't budge, or it crashes down suddenly. But problems start before total failure. Listen for squeaking or creaking from above the door. Watch for the door sagging on one side. Feel the door weight when you manually open it. If it's suddenly much heavier, a spring is weakening.
Some homeowners try to prop the door open or work around the problem. Don't. A failing spring puts stress on the opener motor and can cause it to fail too. That's when repair costs jump from a spring replacement to a full opener replacement. Catching the problem early saves money.
If your door is stuck and you suspect a spring issue, we've written a detailed guide on what to do when your garage door gets stuck in Redwood City. Read that first if you're unsure whether to attempt any fixes yourself.
Spring replacement is not a DIY job. The tension on these components is extreme. A slip, a wrong tool, or miscalibration can cause serious injury. Torsion springs require precise balancing. Extension springs need safety cables installed correctly. Professional technicians have the right tools, know the exact spring specifications for your door, and carry insurance.
Garage Door Redwood City replaces springs safely and fast. We stock common sizes, so we often finish same-day work. We'll give you a cost estimate over the phone or after a quick visit. No surprises, no upselling. Just the repair your door actually needs.
Our full range of spring services includes inspection, replacement, and lubrication to extend spring life.
You can't prevent springs from wearing out, but maintenance helps. Keep springs lubricated with a silicone-based garage door lubricant every six months. Avoid harsh cleaners or water spray. Keep the tracks clean and aligned so the door runs smoothly without extra stress on springs. A well-maintained door puts less strain on springs and opens smoothly for years longer.
If you're moving into a home in Redwood City and don't know the age of the springs, have them inspected. If they're over 8 years old, budget for replacement soon. It's far better to replace them on your schedule than to deal with an emergency failure.
Don't wait for springs to snap. Schedule a free quote today and let's make sure your door operates safely. Call 626-210-3836 or book online.
How do I know if my garage door spring is broken? A broken spring will prevent the door from opening smoothly or at all. The door may feel very heavy to lift manually, sag on one side, or crash down. You might hear a loud bang or snap before the failure occurs. Never attempt to force the door open if you suspect a broken spring.
Can I replace a garage door spring myself? Spring replacement requires specialized knowledge and tools. The tension is extremely dangerous. One mistake can cause serious injury or death. Always hire a professional technician. The cost of professional replacement is worth the safety and warranty protection.
How much does a garage door spring replacement cost in Redwood City? Costs vary based on spring type, door weight, and labor. We've broken down pricing in detail in our guide to garage door spring costs in Redwood City. Call 626-210-3836 for a specific estimate for your door.
How long do garage door springs last? Torsion springs typically last 7 to 9 years. Extension springs last 5 to 7 years. Lifespan depends on use frequency, climate, and maintenance. We've detailed expected spring lifespan in our article on how long garage door springs last in Redwood City.
What's the difference between torsion and extension springs? Torsion springs sit above the door and twist to lift it. They're safer and last longer. Extension springs run along the sides and stretch to provide lift. They're cheaper but less durable and carry a safety risk if they snap. Most modern homes use torsion springs.