2026-03-18 6 min read
It usually happens first thing in the morning. You hit the button, the opener motor runs, and the door barely budges. or makes a loud bang and stops dead. If that's happened to you, there's a good chance you've got a broken torsion spring, and you're not going anywhere until it gets fixed.
This is one of the most common calls we get from homeowners throughout Coronado, and it catches people off guard every time. The door worked fine yesterday. Springs don't announce themselves before they go. Here's what you need to know. what broke, why it breaks faster here on the island, what a repair involves, and what it should cost you.
Most modern garage doors. including the sectional doors that fit neatly under the low-pitched rooflines of Coronado's Craftsman bungalows and the flat-roofed mid-century homes in the Cays. use a torsion spring system. This is the large, tightly coiled spring (or pair of springs) mounted horizontally above the door opening on a steel shaft.
Every time your door opens or closes, that spring winds or unwinds to counterbalance the door's weight. A standard residential garage door can weigh 150 to 400 pounds. Without a functioning spring, the opener motor alone cannot lift it safely. which is exactly why the door feels immovable when a spring snaps.
Springs are rated by cycle count, typically 10,000 to 20,000 cycles for standard springs. If you use your garage door four times a day, that's roughly 1,460 cycles per year. meaning a standard spring could last anywhere from seven to fourteen years under normal use.
Coronado's coastal environment shortens that timeline. The island's persistent salt-laden humidity. averaging 72% year-round with peaks during the summer marine layer season. promotes rust formation on the steel coils. A corroded spring loses tension unevenly and is far more prone to sudden failure than a clean, well-maintained one.
Homeowners in neighborhoods like Coronado Village and the Shores, where homes sit close to both the bay and the ocean, tend to see spring failures on the earlier end of the expected range. That's not a coincidence. it's the same salt-air corrosion that shortens the life of any exposed metal on the island. Keeping springs lubricated with a marine-grade grease (not WD-40) can meaningfully extend their life, but it won't make them last forever. For a deeper look at how coastal conditions affect your entire door system, read our guide to protecting your garage door from salt air damage.
When a technician arrives for a spring replacement, here's what actually happens:
1. Full assessment first. A good tech doesn't just swap the broken spring and leave. They check cables for fraying, look at rollers and hinges for corrosion, verify the door is balanced, and test the opener's auto-reverse function. which is required by California law. If cables are visibly worn alongside the failed spring, it makes sense to address them in the same visit rather than scheduling a second call in a few weeks.
2. Both springs, not just one. If your door has two springs and one has broken, the second one has logged the exact same number of cycles and is under the same amount of wear. Most experienced technicians. and most homeowners who've been through this before. will replace both at the same time. Replacing only the broken one often means a callback within months when the second one goes.
3. Spring sizing matters. Springs are not one-size-fits-all. The right spring is calibrated to the door's specific weight and height. An undersized spring will fail prematurely; an oversized one puts excess strain on the opener motor. A technician who measures and calculates before installing is doing the job correctly.
4. Balance test and adjustment. After installation, the door should be manually lifted to waist height, let go, and hold its position without drifting up or dropping. If it doesn't, the spring tension needs adjustment before the job is complete.
For residential spring replacement in the San Diego area, most homeowners pay somewhere between $150 and $450 depending on spring type, door size, and whether both springs need replacing. Labor from a qualified technician in this area typically runs $75 to $150 per hour. If you need both springs replaced. which is the common scenario. plan for the higher end of that range. You can review our services or get in touch directly for an honest, upfront quote specific to your door.
Be cautious of quotes that seem unusually low. a common tactic is to advertise a low spring price and then add fees for labor, cable inspection, or "balancing" that weren't mentioned upfront. Ask for an all-in price that includes parts, labor, and any adjustments before the technician starts work.
Every year, homeowners across the San Diego area. including Imperial Beach and Chula Vista further down the Silver Strand. get injured attempting to replace torsion springs themselves. This is worth being direct about: torsion springs store an enormous amount of mechanical energy. A spring that snaps during installation or adjustment can cause severe lacerations, broken bones, or worse.
The tools required to safely wind and tension a torsion spring are specialized, and the process requires knowing exactly how many turns of tension a specific spring needs for a specific door weight. This is not a job where watching a YouTube video adequately substitutes for training and proper equipment. Leave it to a professional. every time. Our FAQ page has more detail on what to expect from a professional spring service visit.
Garage Door Coronado handles spring replacements across Coronado regularly. If your door isn't opening this morning, don't leave your car trapped and don't attempt to force it. call us to get on the schedule and we'll get it sorted.
My garage door opener is running but the door won't open. Is it definitely the spring? It's the most likely culprit, but not the only possibility. A broken spring is usually confirmed by visually inspecting the horizontal spring above the door. you'll often see a visible gap or separation in the coil. However, frayed or snapped lift cables can produce similar symptoms. Either way, stop operating the door manually or with the opener until the issue is diagnosed. forcing a door with a broken spring or cable can cause further damage or injury.
How long does a spring replacement take? For a standard residential door with a straightforward torsion spring setup, an experienced technician can complete the replacement in one to two hours, including the balance test and safety checks. If cables or other components also need attention, plan for a bit more time.
Should I upgrade to higher-cycle springs when I replace them? In Coronado's coastal environment, it's worth considering. Standard springs are rated for about 10,000 cycles, but you can upgrade to springs rated for 20,000 or even 30,000 cycles for a modest additional cost. Given that salt air already shortens spring life here compared to inland homes, the higher cycle rating provides a meaningful buffer and reduces how often you'll face this repair.