2026-03-21 7 min read
Here's something most homeowners don't realize until it's too late: the spring above your garage door is doing the majority of the work every single time you open it. The opener just guides the movement. the spring is what's actually lifting the weight. And in a neighborhood like Roslindale, where so much of the housing stock dates to the late 1800s and early 1900s, plenty of garage setups are running on springs that are well past their prime.
This guide is about garage door springs. what type you have, how to know when they're failing, what replacement actually costs in the Boston area, and when to call it instead of trying to DIY it.
Most garage doors use one of two spring systems, and which one you have affects both cost and safety when something goes wrong.
Torsion springs are mounted horizontally above the door opening and coil around a metal bar. They're the more common setup on newer doors and tend to last longer. typically 7 to 14 years or 10,000 to 20,000 operating cycles. They're generally considered safer because when they break, they stay on the bar rather than flying loose.
Extension springs run along the horizontal tracks on either side of the door and stretch when the door closes. They're more common on older, lighter doors and have shorter lifespans. around 4 to 10 years. When extension springs fail, they can snap with significant force and become a safety hazard in the garage.
Many of the older homes in Roslindale and nearby Brookline still have extension spring systems. If yours is one of them, it's worth asking about a conversion to torsion springs when the time comes. it's a more expensive upfront job but a meaningful upgrade in safety and longevity.
Springs rarely fail without warning. most give you signals for weeks or months before they go. Here's what to watch for:
- The door feels heavy when lifted manually. Disconnect the opener using the red emergency cord and try lifting the door by hand. A properly functioning door should feel like about 10,15 pounds. If it feels like you're lifting a truck, the springs are losing tension. - The door won't stay open halfway. Lift the door to waist height and let go. it should hold in place. If it drifts down, the springs are worn. - Visible gaps in the torsion spring coil. Healthy coils sit tightly against each other. A visible gap in the coil is a spring that's at or near the end of its life. - Loud bang from the garage. This is the spring snapping. It's unmistakable. sounds like a gunshot. Stop using the door immediately. - Rust or corrosion on the spring. The Boston area's humidity and coastal moisture put garage door springs at real risk of rust. Rust weakens the metal and creates stress points where breaks occur. - The opener strains and slows mid-cycle. The motor is taking on weight it shouldn't have to carry.
If you're noticing any of the above, contact us to schedule an inspection before the spring fails completely. a proactive replacement is almost always less expensive than an emergency call.
Cost is usually the first question, so let's answer it honestly. Spring replacement for a single door typically runs between $150 and $350, with most homeowners landing around $250 when you factor in parts and labor. For larger or heavier doors, or if cables and other hardware need attention at the same time, that number can climb to $400,$500.
One thing worth knowing: if your door uses two springs and one breaks, most reputable technicians will recommend replacing both. That might feel like an upsell, but it's actually sound advice. Both springs wear at the same rate. if one failed, the other is likely not far behind. Installing a mismatched pair also creates uneven lift, which puts extra stress on the opener and the door panels.
The cost to replace both springs at once is typically only $150,$300 more than replacing a single spring, and it eliminates the risk of a second service call (and second service fee) a few months later. See our post on long-term cost benefits for more on why front-loading maintenance costs almost always makes financial sense.
This comes up a lot, and the answer is straightforward: garage door springs store enormous energy. enough to lift a 200+ pound door thousands of times. Mishandling a spring under tension can cause severe injury. Professional technicians use calibrated winding bars and specialized equipment, and they know how to spot secondary wear on cables, rollers, and bearings while they're in there.
The money saved by going DIY is not worth the risk, full stop. This is one home repair where hiring a licensed professional is the clear call.
If your older Roslindale home still runs extension springs, a conversion to a torsion spring system costs roughly $400,$800 but brings real advantages: longer lifespan, smoother and quieter operation, and significantly improved safety in the event of a failure. If you're already paying for a spring replacement on an aging extension system, it's worth getting a conversion quote at the same time. especially if your door is also due for other updates. Our services page has more on what that involves.
A quality spring replacement job should take 45,90 minutes and include more than just swapping the spring. A good technician will:
- Inspect and test cables for fraying or wear (cables and springs work as a system. read more in our cable repair guide) - Check rollers, hinges, and bearings for wear, Test door balance after installation, Apply appropriate lubrication to moving parts, Verify opener force settings are correct for the new spring tension
Ask for documentation of the work and confirm the spring warranty. quality parts should carry at least a 3,5 year warranty.
Sometimes a broken spring is also the moment you realize your door has multiple problems. If you're looking at worn springs, damaged panels, frayed cables, and an opener that's 15 years old, the math starts to favor a full replacement over piecemeal repairs. A complete new garage door runs roughly $750,$1,700 installed. but if you're stacking up repairs that together approach that number, a new door with a fresh warranty often makes more sense, especially given how competitive the Roslindale and greater Boston real estate market is right now.
When you're ready to talk through your options, the team at Roslindale Garage Doors is straightforward about what's worth fixing and what isn't. Visit our FAQ page for answers to the most common questions, or reach out directly to book a service call.
Q: Can I keep using my garage door if one spring breaks?
A: You shouldn't. With a broken spring, the opener is suddenly carrying the full weight of the door. a job it was never designed to do. Running the opener in this condition can burn out the motor and potentially cause the door to drop suddenly. Disconnect the opener and leave the door in the closed position until a technician can replace the spring.
Q: My door still opens. does that mean the springs are fine?
A: Not necessarily. A door can continue operating with springs that are partially worn, while putting significant extra strain on the opener motor and other hardware. The manual lift test is a better check: disconnect the opener and lift the door by hand. If it feels heavier than 15 pounds, or doesn't stay open at waist height, the springs are weakening even if the opener is still compensating.
Q: How long will new springs last?
A: Standard torsion springs typically last 7,14 years under normal residential use. High-cycle springs. which cost more upfront. can last 15,20 years or longer. Maintenance matters too: annual lubrication with a lithium-based lubricant helps prevent rust and extends spring life, especially given the humidity and coastal moisture common across the Boston area.