If your garage door suddenly won't open, or it slammed shut with a loud bang, there's a very good chance a spring broke. Springs do the heavy lifting on every garage door — a single door can weigh 150 to 350 pounds, and the springs are what make it feel light. When one fails, the whole system stops working safely. This guide explains why springs break, how to tell, and exactly what to do (and not do) next. When you need help fast, our Morristown spring repair team is a call away at (973) 250-4214.
Most modern doors use torsion springs mounted on a metal shaft above the opening. As the door closes, the springs wind up and store energy; as it opens, they release that energy to counterbalance the door's weight. Older or lighter doors sometimes use extension springs that run along the horizontal tracks. Either way, the spring — not the opener motor — does roughly 90% of the lifting. The opener just guides the door. That's why a door with a broken spring feels impossibly heavy and why forcing it can burn out the opener.
Springs are rated in cycles — one open and one close is a cycle. A standard spring is rated for about 10,000 cycles, which sounds like a lot until you realize a busy Morristown family can open the door six to eight times a day. That's roughly 7 to 10 years of life. Here are the most common reasons they fail early:
You don't always hear the bang. Watch for these tells: the door opens a few inches then stops; the opener strains, hums, or reverses; there's a visible gap in the torsion spring coil; the door is crooked in the tracks; or the door feels extremely heavy when you try to lift it by hand. If you see a two-to-three-inch separation in the spring above the door, that's a definitive broken spring.
The single most important thing: stop using the door. Don't keep pressing the opener — you'll strip the gears or burn out the motor, turning a spring repair into a spring-and-opener repair. If the door is open, leave it open and park elsewhere; if it's closed, leave it closed. Don't try to lift a door with a broken spring; with the counterbalance gone, it can drop with crushing force.
We're all for homeowner repairs, but torsion springs are the exception. They hold enormous stored energy, and the winding bars can become projectiles if they slip. Every year, ER visits trace back to DIY spring jobs. A trained technician has the right-size winding bars, the correct replacement spring for your door's weight, and the experience to wind it to the exact turn count. It typically takes a pro under an hour. If you're anywhere near Morristown, NJ, book a spring repair instead of risking it.
If your door has two springs and one broke, replace both. They have the same cycle life, so the second is right behind the first — and replacing both at once saves you a second service call. A reputable shop will always recommend this, and a good technician will also check the cables, rollers, and bearings while they're in there, because a broken spring often stresses those parts too.
You can't make springs last forever, but you can get the most out of them: lubricate the springs and moving parts with a garage-door-specific lubricant twice a year, keep the door balanced (a tech can check this in minutes), and consider upgrading to a high-cycle spring rated for 20,000+ cycles if you use the door heavily. For a full routine, see our Morristown maintenance checklist.
Knowing your spring type helps you describe the problem and understand the repair. Torsion springs sit on a horizontal bar above the door and are the modern standard — they're safer, last longer, and balance the door more smoothly. Most Morristown homes built or updated in the last two decades have them. Extension springs run parallel to the horizontal tracks on either side and stretch as the door closes; they're older and more common on lighter, single-car doors. Extension springs should always have a safety cable threaded through them so that if they snap, the pieces can't fly across the garage. If yours don't have safety cables, ask us to add them — it's inexpensive and prevents injury. When you call, just tell us whether the broken spring is above the door (torsion) or along the tracks (extension), and roughly how wide the door is; that lets us bring the right parts the first time for your Morristown spring repair.
Spring replacement is one of the most predictable garage door repairs. The price depends mainly on the spring size and whether you're replacing one or both, plus a service call. We always quote the exact number before we start — no diagnostic guessing games. Most single-spring jobs are wrapped up in 30–45 minutes, and even a two-spring torsion conversion is typically done within the hour. While we're there, we'll check the door's balance, lubricate the moving parts, and inspect the cables and rollers so you don't end up with a second failure a month later. If a part is on its last legs we'll tell you, but we won't pressure you — plenty of Morristown customers just get the springs done and call us later for the rest. You can see everything we handle on our services page, and if you like to stay ahead of problems, our maintenance checklist keeps springs healthy longer.
A broken spring is inconvenient and a little dangerous, but it's also one of the quickest repairs for a professional. We carry common springs on the truck and finish most Morristown jobs same-day. Explore all of our garage door services, check whether we cover your town, or just call (973) 250-4214 for a free estimate. We'll get your door — and your morning — back to normal.
Before you replace the whole opener, run through these checks — many "dead" openers are an easy fix.
Read more →Fifteen minutes twice a year prevents most expensive garage door repairs. Here's the exact checklist we use.
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