2026-07-24 8 min read
Garage door springs carry tension that can lift 400 pounds with ease. Two main types serve Dartmouth homes: torsion springs above the door and extension springs along the sides. Never attempt DIY replacement. A snapped spring can cause serious injury or property damage. Understanding your spring type, lifespan, and repair cost helps you plan ahead and stay safe.
Your garage door weighs 300 to 500 pounds. Springs counterbalance that weight so your opener uses minimal force. Torsion springs twist and unwind, storing rotational energy. Extension springs stretch and contract, using a pulley system. Both designs fail eventually. Springs last 7 to 9 years with normal use, depending on cycles and maintenance.
When a spring fails, your door becomes extremely heavy. The opener cannot lift it safely. Many homeowners discover the problem when the door won't budge or makes a loud bang. That bang is often a spring snapping under load.
Look above your door opening. Torsion springs run horizontally across the top, usually in pairs. They're thicker and more durable than extension springs. Most residential doors in Dartmouth use torsion springs because they last longer and operate more smoothly.
Extension springs mount vertically on each side of the door. They're cheaper upfront but wear faster due to constant stretching. Safety cables run through extension springs to catch them if they snap, preventing them from whipping across your garage.
Your door's weight and opening size determine which type you need. A professional can identify your spring type instantly and recommend the right replacement.
A snapped spring cannot be repaired. Springs are manufactured units under extreme tension. Once they fail, replacement is the only safe option. The cost to replace garage door springs in Dartmouth typically ranges from $200 to $400 per spring, plus labor.
Torsion springs cost more than extension springs but justify the investment through longevity. If both springs fail simultaneously, expect $400 to $800 for parts and installation. Many homeowners opt to replace both springs at once, even if only one has failed, because the second spring likely won't last much longer.
**Need garage door springs in Dartmouth today?** Call +1 508 690 4704. we cover same-day service across the area.
Labor typically adds $150 to $300 to your estimate, depending on spring type and door complexity. Get a free quote before committing. We can provide an exact cost estimate for your garage door repair in Dartmouth based on your specific setup.
Springs are under 10,000 pounds of tension. A mistake during removal or installation can cause serious injury. The spring can snap violently, launching parts across the garage. Your eyes, hands, and face are at risk.
Professional technicians use specialized tools and follow safety protocols. They've replaced hundreds of springs and know how to handle the tension safely. The cost of professional installation is worth your safety and peace of mind.
If your door is stuck due to a broken spring, contact us for emergency garage door service in Dartmouth. Don't force the door open manually or attempt a temporary fix. That can damage the door frame or injure you.
Listen for creaking or squeaking sounds when opening and closing. A door that feels heavier than normal often signals weak springs. If one side of the door rises faster than the other, a spring imbalance exists. These warning signs mean replacement is coming soon.
Regular maintenance helps springs last longer. Lubrication reduces friction and wear. Inspection catches minor issues before they become emergencies. Learn more about garage door spring warning signs in Dartmouth to stay ahead of problems.
Clean your tracks monthly. Remove debris that adds friction and strain on springs. Apply garage door lubricant to springs, hinges, and rollers twice yearly. Avoid WD-40 or household oils, which attract dirt.
Balance testing identifies weak springs early. Open your garage door halfway, then release it. A balanced door stays put. If it drifts down or up, springs need adjustment or replacement.
Professional maintenance is part of the bigger picture. See our garage door maintenance guide for Dartmouth homeowners for a complete tune-up approach.
Broken springs happen without warning. Planning ahead prevents you from being stuck with a non-functioning door. Schedule a free quote or call +1 508 690 4704 to discuss your spring type, age, and repair options. We serve Dartmouth and surrounding areas including New Bedford with same-day availability for emergencies.
Don't wait for a complete failure. A small investment in inspection and preventive replacement saves money and keeps your family safe. We're here to help you make the right choice.
How long do garage door springs last? Most springs last 7 to 9 years with normal use (about 3 to 5 cycles per day). Heavier doors, frequent use, and salty coastal air in the Dartmouth area accelerate wear.
Can I replace just one spring if both are old? Technically yes, but we recommend replacing both. The second spring is likely near failure and will snap soon after, causing another service call and expense within weeks.
What's the difference between torsion and extension springs? Torsion springs twist above the door and last longer. Extension springs stretch on the sides and cost less upfront but fail sooner. Torsion is the better long-term investment for most homes.
Is spring replacement covered by homeowners insurance? Typically no. Springs are considered maintenance items. Check your policy, but most insurance excludes normal wear and tear unless damage results from a covered event.
Why does my door feel heavier after a spring breaks? A broken spring removes roughly 50 percent of the counterbalancing force. Your opener must work twice as hard, which is why many doors won't open at all after spring failure.