Garage Door Springs in Londonderry: Types, Cost & When to Repair
2026-05-04 4 min read
There are two main types of garage door springs: torsion and extension. Torsion springs sit above your door and twist to lift it. Extension springs run along the sides and stretch to provide lift. Most homes in Londonderry use torsion springs because they're safer and last longer, typically 7 to 9 years with normal use.
How Garage Door Springs Work
Your garage door weighs between 300 and 700 pounds depending on material and size. That's why springs exist. Without them, your opener would burn out in weeks trying to lift dead weight. The springs counterbalance the door, making it feel nearly weightless when you open it manually or with an opener.
Torsion springs use torque, or rotational force, to store energy. When you open the door, they unwind gradually, transferring that energy to lift the panel. Extension springs work differently. They're stretched tight along each side rail and pull upward as the door rises. Both systems are under extreme tension and require professional handling.
Signs Your Springs Need Attention
A snapped spring is the most obvious warning sign. Your door will either refuse to open or drop suddenly when you try. Sometimes you'll hear a loud bang from the garage, like a gunshot. That's a spring letting go under pressure.
Other red flags include slower opening speeds, jerky movement, or your opener struggling more than usual. If the door feels heavier to lift manually, don't ignore it. Broken springs force your opener to compensate, and that leads to opener failure next.
For a deeper look at what causes spring failure in our climate, check out our guide to why garage door springs snap in Londonderry winters. Cold weather and salt air accelerate rust and metal fatigue significantly in New Hampshire.
Cost and Same-Day Service
Spring replacement cost ranges from $200 to $400 per spring, depending on type and quality. Torsion springs are pricier than extension springs but hold up better over time. Most homes need both springs replaced together because if one breaks, the other is usually close behind.
Labor typically adds $150 to $250 to your estimate. At Londonderry Garage Doors, we're transparent about pricing upfront. Call (978) 961-5968 for a free estimate with no hidden fees. Our team can often schedule a free quote and same-day repair if you call before noon.
**Need garage door springs in Londonderry today?** Call (978) 961-5968. we cover same-day service across the area.
DIY or Professional Help?
Never attempt to replace garage door springs yourself. These components are under 200 to 400 pounds of tension. Releasing that tension incorrectly can cause serious injury or death. We've seen too many DIY attempts end badly after 15 years on the trucks.
Professional technicians use specialized winding bars and safety cables. We test the balance after installation to ensure your opener runs smoothly and your door doesn't wear unevenly. Our full repair service breakdown explains what goes into each job.
Spring Maintenance and Longevity
You can't prevent springs from aging, but you can slow the process. Keep your door balanced by testing it monthly. Close it halfway and let go. It should stay put. If it drifts up or down, springs may be weakening.
Lubricate your springs twice yearly with a silicone-based garage door lubricant. Never use WD-40 or general oil. These attract dirt and gum up the works. Proper lubrication extends spring life by a year or two.
When to Replace Your Entire Door
Sometimes a snapped spring signals that your whole door system needs updating. If your door is 15 years old or older, the springs won't be your only issue. Panels, hinges, and rollers wear out together. Read our installation guide to learn when replacement makes more sense than repair.
Our team can assess your setup and recommend the most cost-effective path forward. Browse our full services menu for all repair and installation options.
Next Steps
If you suspect a broken spring or want a spring inspection, don't wait. A failed spring leaves you stranded and puts stress on your entire garage door system. Contact Londonderry Garage Doors today at (978) 961-5968 or get a same-day estimate online. We serve Londonderry and the surrounding towns across New Hampshire with fast, reliable service.
Frequently Asked Questions
How long do garage door springs typically last? Most torsion springs last 7 to 9 years with normal use. Extension springs wear faster, often 5 to 7 years. Harsh weather and frequent cycles shorten lifespan. Regular maintenance and lubrication can add a year or two.
Can I replace just one spring instead of both? Technically yes, but we don't recommend it. When one spring breaks, the other is typically near failure too. Replacing both ensures balanced lift, prevents premature opener wear, and saves you money long term.
What causes springs to snap in winter? Cold makes metal brittle. Combined with salt air and rust buildup, winter accelerates spring fatigue. Londonderry winters are especially hard on springs because of humidity and freeze-thaw cycles.
How much does emergency spring repair cost in Londonderry? Standard service runs $200 to $400 per spring plus labor. Emergency or after-hours calls may include a service fee, but we offer same-day appointments. Call for exact pricing based on your situation.
Should I replace my garage door opener at the same time? Not necessarily. If your opener is less than 10 years old and works smoothly, springs alone may suffice. Older openers struggle with new springs. Our technicians will advise during your estimate.