Garage Door Springs in Brookline: Torsion vs. Extension Explained

Name: Garage Door Company Brookline
Address: 1 Chestnut PL, Brookline, US
Telephone: 857-766-0263
Price range: $$

2026-09-18 5 min read

A customer called last Tuesday asking why his garage door felt heavier than usual. After a quick inspection, I found his torsion spring was losing tension. That's when I realized most homeowners don't actually know the difference between the two main types of garage door springs in Brookline. Understanding which type you have saves time, money, and headaches down the road.

Two Springs, Two Jobs

Your garage door uses one of two spring systems: torsion or extension. Both counterbalance your door's weight, making it easy to open and close. The difference lies in how they work and where they're mounted.

Torsion springs sit horizontally above the door opening, wound tight around a metal shaft. They twist (torque) to store and release energy. When you open the door, the spring unwinds. When you close it, the spring winds back up. This creates smooth, controlled motion. Most modern doors in the Boston area use torsion springs because they last longer and operate more safely.

Extension springs hang vertically on both sides of the door track. They stretch and contract like a rubber band. As the door lowers, they extend. As it rises, they contract and help pull the door up. Extension springs wear out faster than torsion springs, typically lasting 5 to 7 years instead of 7 to 9 years.

Why the Type Matters for Your Brookline Home

The spring type affects repair cost, replacement frequency, and safety. Torsion springs are more expensive upfront but outlast extension springs. A snapped torsion spring leaves your door stuck. A snapped extension spring can cause the door to fall suddenly, which is dangerous and expensive.

If your door is old, you likely have extension springs. Newer installations favor torsion because they're more reliable. Knowing which you have tells you what to expect when something breaks. It also helps you budget for repairs. For a clear breakdown of what different repairs cost, check out our garage door spring repair cost guide for Brookline homeowners.

**Need garage door springs in Brookline today?** Call 857-766-0263 for same-day service and a free estimate.

How to Spot Which Type You Have

Walk into your garage and look above the door. Do you see a horizontal shaft with a coiled metal rod? That's your torsion spring. Do you see two vertical springs attached to cables running along the door tracks? Those are extension springs.

Never touch or adjust a spring yourself. Springs are under extreme tension and can cause serious injury. If you hear a loud bang or notice your door won't open, a spring has likely snapped. That's the time to call a professional for emergency garage door service in Brookline.

Extension Springs Need Help From Safety Cables

Extension springs pose a real safety risk. If the spring breaks, the door can drop fast and hard. That's why modern extension spring setups include safety cables. These cables run through the center of the spring and attach to the door frame. If the spring snaps, the cable catches it, preventing a free fall.

Older Brookline homes sometimes have extension springs without safety cables. If that's your situation, adding cables is a smart upgrade. It costs less than replacing the springs but gives you critical protection.

When to Repair vs. Replace

One snapped spring usually means both springs are near the end of their life. Springs age together. If one fails at year 7, the other will follow within months. That's why most professionals recommend replacing both springs at once, even if only one broke. A single repair saves money today but costs more in labor and frustration later.

For a detailed look at this decision, read our guide on when to repair versus replace garage door springs.

Getting a Same-Day Estimate

If you think your springs are failing, don't wait. A broken spring makes your door a safety hazard and leaves you stuck at home. Call us at 857-766-0263 for a same-day estimate. We'll identify which type of spring you have, assess the damage, and explain your options without pressure.

Spring failure isn't something to troubleshoot on your own. The tension in these components can cause serious injury. A licensed technician diagnoses the problem in minutes and gets your door working again safely.

Take Action Today

Spring problems don't fix themselves, and delaying makes them worse. If your door is slow, jerky, or won't open smoothly, springs could be the culprit. Schedule a free quote or call 857-766-0263 to book a same-day visit. We serve Brookline and the surrounding Boston area.

Don't let a broken spring leave you stranded. Contact us now and get back to normal.

Frequently Asked Questions

How long do garage door springs last? Torsion springs last 7 to 9 years with normal use. Extension springs last 5 to 7 years. Lifespan depends on climate, frequency of use, and maintenance. Harsh New England winters can shorten spring life.

Can I replace just one spring? Technically yes, but not recommended. Both springs age at the same rate. Replacing one while the other is near failure means a second repair soon. Replacing both at once saves labor costs and prevents downtime.

How much does spring replacement cost? Cost varies by spring type and door size. Torsion springs cost more upfront but last longer. For a detailed breakdown, see our garage door cost and pricing guide for Brookline.

What happens if a spring breaks? Your door becomes very heavy and difficult to open manually. If both springs break, the door may not open at all. Extension springs can fail suddenly, causing the door to drop. This is a safety hazard and requires immediate professional repair.

Is it safe to replace springs myself? No. Springs are under thousands of pounds of tension. A slip can cause severe injury or death. Always hire a licensed professional. This is not a DIY project.

Back to Blog