2026-04-13 7 min read
If you walked into your garage this morning and the door wouldn't budge. or it slammed shut faster than usual. there's a good chance a spring has failed. It's the single most common reason Dorchester homeowners call for emergency garage door service, and it happens year-round here, though the cold months are especially brutal on metal hardware.
Dorchester sits in a humid continental climate, and the neighborhood's proximity to Boston Harbor means metal components like springs deal with a punishing combination of hard winters, freeze-thaw cycles, and coastal salt air. That combination accelerates wear significantly compared to inland areas like Newton or Brookline.
Your garage door weighs anywhere from 130 to over 400 pounds depending on the material and style. Springs are what make it feel light when you lift it manually. they store and release tension to counterbalance that weight. Without a functioning spring, your opener motor is essentially dragging the full dead weight of the door. That's why a broken spring often burns out openers, too.
There are two main types you'll find on Dorchester homes:
- Torsion springs. mounted horizontally above the door opening on a metal shaft. These are the most common type on modern sectional doors and are under enormous tension. - Extension springs. mounted on either side of the door tracks, running parallel to the horizontal tracks. These are common on older doors and lighter single-car setups.
Given how many of Dorchester's homes are older triple-deckers and Victorian-era properties, it's not uncommon to find outdated extension spring systems that were last touched decades ago. If your home is in Savin Hill, Ashmont, or around Meeting House Hill and hasn't had recent garage work, it's worth knowing which type you have.
Springs don't always snap without warning. Here's what to watch for before you're stuck with a door that won't move:
Disconnect your opener and try lifting the door manually. A properly balanced door should stay up on its own when raised about three to four feet. If it drops, the spring isn't doing its job.
A broken torsion spring will have a visible gap in the coil. you can see it if you look up at the bar above the door opening. Don't try to operate the door if you spot this.
Many modern openers have safety logic that detects excessive motor strain and stops the door. If your door hesitates and reverses immediately, a failing spring is often the culprit. It's worth checking our limit switch adjustment guide to rule out that issue first before assuming it's the spring.
Torsion springs under high tension snap with a sound like a gunshot. If you heard a loud bang from the garage area, stop using the door immediately and call a professional.
In the Boston metro. including Dorchester, Quincy, and Cambridge. spring replacement typically runs between $200 and $475 depending on the spring type, door weight, and whether both springs need replacing. Labor rates for garage door techs in this area generally run $75 to $100 per hour.
One practical note: most garage doors have two springs installed at the same time. When one breaks, the second is often near the end of its life cycle as well. Replacing both during the same service visit is almost always the smarter financial move. it saves a second trip charge and keeps the door balanced. Ask your technician about this upfront.
For comparison, check out our post on budget-friendly garage door options if you're weighing the cost of a full repair versus a door upgrade.
Torsion springs are rated by cycle count. typically 10,000 to 25,000 cycles depending on quality. and are wound to extreme tension. If a spring slips during installation, the bar can spin violently and cause serious injury. This isn't a liability disclaimer. it's a genuine safety issue that sends people to the ER every year.
Extension springs are slightly less dangerous but still require proper safety cables to be installed correctly. Dorchester Garage Doors technicians carry the right winding bars, safety gear, and spring sizing knowledge to get it done correctly the first time. You can browse our full repair and replacement services to understand what a professional inspection includes.
Standard springs are rated for around 10,000 cycles. If you use your garage door four times a day, that's roughly 7 years of life. High-cycle springs rated for 25,000+ cycles cost more upfront but make a lot of sense for Dorchester homeowners who use the garage as a primary entry point. which is most of us, especially in winter.
Boston's freeze-thaw cycles, snow, and coastal humidity can accelerate wear on springs, tracks, and seals faster than you'd see in a drier climate. Scheduling an annual inspection. especially heading into fall. goes a long way toward catching spring wear before it becomes an emergency. Our fall preparation checklist covers exactly what that inspection should include.
Q: Can I still use my garage door if a spring is broken? No. Operating a door with a broken spring puts enormous strain on your opener motor and risks the door dropping unexpectedly. Disconnect the opener and leave the door in place until a technician arrives. If you need to get your car out, manually lift with care and have someone assist. but be aware the door will be very heavy.
Q: How do I know if I need one spring replaced or both? If your door has two springs (most do), it's almost always recommended to replace both at the same time. They were installed together and wear at roughly the same rate. Replacing just one leaves you with a mismatched system that will be back to failing sooner than you'd like.
Q: Is spring replacement covered by homeowner's insurance? Typically, no. spring wear and breakage is considered normal maintenance rather than a covered event. However, if a broken spring caused damage to your vehicle or door panels, it may be worth reviewing your policy. Contact us if you need documentation of the failure for any purpose.