2026-04-18 7 min read
If you've ever walked into your garage and found the door refusing to budge. or heard a loud bang like a gunshot coming from the garage overnight. there's a good chance a spring just gave out. In Boscawen, NH, this is one of the most common service calls we see, especially in late winter and early spring when the Merrimack Valley's freeze-thaw cycle pushes garage hardware to its limits.
Boscawen sits in Merrimack County, and the climate here is no joke. Temperatures regularly swing from the mid-teens in January to the low 80s in July. a range of nearly 70 degrees over the course of a year. That constant expansion and contraction is brutal on metal components, and garage door springs sit right at the center of that stress.
On top of the temperature swings, many homes in Boscawen. particularly the mid-century ranches, split-levels, and early 2000s colonials with two-car garages that define a lot of the town's residential stock. have doors that are used multiple times a day. Every time that door goes up and down, the spring completes one cycle. Most standard springs are rated for somewhere around 10,000 cycles before they're likely to fail. If your household uses the garage as a primary entry point, you could be hitting that limit in as little as seven to ten years.
Before calling for service, it helps to know what you're dealing with. There are two main spring systems used on residential garage doors:
- Torsion springs mount horizontally above the door opening, wound tightly around a metal shaft. These are the most common type on newer doors and generally last longer. - Extension springs run along the sides of the door tracks, stretching and contracting as the door moves. Older homes in Boscawen and nearby Penacook are more likely to have these.
Both can fail, and both require professional replacement. The tension stored in these springs is enormous. enough to cause serious injury if handled incorrectly. This is genuinely not a DIY job, even for handy homeowners.
You don't always hear the snap. Here are the signs to watch for:
- The door won't open more than a few inches, even with the opener running - A visible gap in the coil of a torsion spring, The door feels unusually heavy when you try to lift it manually, Jerky, uneven movement as the door rises, Cables hanging loose on either side of the door
If you notice any of these, stop using the door. Forcing a door with a broken spring puts extra strain on the opener motor and can damage cables, rollers, and tracks. turning a straightforward spring replacement into a much bigger repair bill. You can learn more about what these failures look like and how they connect to other issues in our post on winter garage door problems in Boscawen.
This is a question we hear constantly. If you have two torsion springs and one breaks, many homeowners want to just replace the failed one. Understandable. but it's usually not the smarter move.
Here's the logic: if both springs were installed at the same time, they've both logged the same number of cycles. Replacing only the broken one means the new spring is carrying significantly more of the load than the older, worn spring beside it. You're likely looking at another service call within a year or two when the second one goes. Replacing both at once costs more upfront, but it saves you time, hassle, and money in the long run.
For a standard residential torsion spring replacement in central New Hampshire, you can expect to pay somewhere in the range of $150 to $350 for a single spring, depending on the spring size, door weight, and who you call. Replacing both springs on a double-car door typically runs $200 to $400 or more, again depending on specs.
Be cautious of unusually low quotes. Some online ads lead to out-of-area operators who undercharge upfront and then push unnecessary upsells. or install low-quality parts that fail quickly. Always ask for a written estimate before any work begins, and verify the company is local and licensed. Check our FAQ page if you have questions about what to look for when hiring a garage door technician.
High-quality springs installed by a reputable technician. properly sized for your door's weight. should give you many years of reliable service. Spring life depends on cycle count, how well the door system is balanced, and whether the springs are lubricated regularly. Speaking of which: a quick spray of garage door lubricant on the springs each spring and fall goes a long way toward extending their life. It's one of the easiest maintenance steps Boscawen homeowners can do on their own.
If you'd like to talk through your spring situation or schedule a service call, reach out to our team and we'll get someone out to take a look. usually the same day or next day for most locations in the Boscawen and Concord area.
No. and we mean that seriously. A door with a failed spring puts enormous strain on the opener and can drop unexpectedly. Disconnect the opener, leave the door closed, and call for service. Don't try to manually force it open.
Spring sizing is based on the door's weight, height, and track configuration. This isn't something you can reliably guess at. an improperly sized spring either won't support the door correctly or will wear out far too quickly. A technician will measure on-site to get the right spec.
Sometimes. If your door is older, showing rust or significant panel damage, and you've been dealing with repeated repairs, it might be worth considering a full replacement. We cover the cost factors and decision-making process in more detail in our repair cost guide.