2026-04-10 7 min read
If you've ever heard a loud bang from your garage at 7 a.m. and walked out to find the door stuck flat on the ground, you already know what a broken spring feels like. It's one of the most common. and most jarring. garage door failures homeowners in Glendora deal with. Springs are the unsung workhorses of your entire system, and understanding how they work can save you money, stress, and a potentially dangerous situation.
Your garage door weighs anywhere from 150 to over 400 pounds depending on its size and material. The springs are what make lifting that door feel effortless. they counterbalance the door's weight so the opener motor (or your own arm) doesn't have to do all the heavy lifting. When a spring fails, that counterbalance disappears and the door becomes a dead weight your opener simply cannot move safely.
For homeowners in Glendora's foothill neighborhoods. especially those in North Glendora with larger custom homes and oversized two-car or three-car garages. this matters even more. Heavier doors, including the popular carriage-style wood or steel doors common on the ranch-style and Mediterranean homes throughout the city, put more consistent stress on springs than lightweight single-panel doors do.
Torsion springs are the most common type on modern sectional garage doors. They're mounted horizontally on a metal rod directly above the door opening. When the door closes, the spring winds up and stores energy; when you open the door, it unwinds and uses that stored energy to help lift. Torsion springs are more durable, provide smoother operation, and are generally safer when they break because they stay on the shaft rather than flying loose.
Torsion springs typically last 8 to 15 years and are rated by the number of cycles. one cycle being one full open-and-close. Most standard torsion springs are rated for 10,000 to 20,000 cycles. If your household uses the garage door as the main entry point (which is extremely common in Glendora's car-dependent neighborhoods), you might be logging four to six cycles a day, which can shorten that lifespan significantly.
Extension springs run parallel to the horizontal tracks on either side of the door. They stretch and contract to provide lift. You'll find them more often on older or lighter single-car garage doors. including some of the classic 1920s and 1930s bungalows and midcentury ranch homes found near Glendora Village and along the South Hills area. Extension springs are cheaper to replace but typically have a shorter lifespan of 7 to 12 years and carry more risk if a cable snaps, since they can come loose under tension.
If you have extension springs without safety cables running through them, that's worth addressing with a professional sooner rather than later.
Most garage door springs last between 7 and 15 years depending on the type, quality, and how often the door is used. Since garage doors are typically opened and closed about three to five times daily, that math puts the average spring replacement somewhere in the six to ten year range for active households.
Glendora's dry Mediterranean climate is generally kind to metal hardware. you won't deal with the rust and corrosion that plagues coastal or humid climates. That said, the heat is real. Summer temperatures regularly push into the upper 80s and 90s, and the thermal expansion and contraction that comes with hot days and cooler nights does gradually stress metal springs over time. A bit of preventive lubrication goes a long way. see our garage door maintenance checklist for specific product recommendations and timing.
Don't wait for the loud bang. There are warning signs that show up well before a full break:
- The door feels unusually heavy when you try to lift it manually after disconnecting the opener - The door jerks or moves unevenly rather than rising smoothly - Visible gaps or separation in the spring coil. a broken torsion spring will show a clear gap - Squeaking or grinding sounds during operation, especially near the top of the door's travel - The opener strains or reverses immediately after trying to open - The door drops quickly when closing, rather than lowering gently
If you notice any of these, it's time to call a professional before the spring breaks completely and potentially damages the opener, cables, or door panels.
For most homeowners in the San Gabriel Valley, spring replacement typically runs between $150 and $350 for a standard set, with the national average around $250. Torsion springs cost more than extension springs but last longer. If you have a heavier double-car door. common on the larger homes in neighborhoods like Morgan Ranch or Silent Ranch Estates in North Glendora. expect to pay toward the higher end since heavier doors require stronger, more expensive springs.
One tip professionals consistently give: replace both springs at the same time, even if only one has broken. The second spring has been under the same stress and is likely close to failure anyway. Replacing both during one service visit saves you a second call-out fee within months.
For a detailed breakdown of what goes into a replacement decision, the team at Garage Door Glendora can walk you through your options with transparent pricing before any work begins.
This is one of those repairs where the honest advice is: leave it to a professional. Torsion springs in particular store significant mechanical energy under tension. a spring under load that releases suddenly can cause serious injury. Professional technicians have the specialized winding bars, training, and safety experience to handle this correctly. The cost of hiring a pro is genuinely worth it here.
Extension springs carry somewhat less risk, but they still require proper cable setup and tensioning to work safely. If you're unsure, reach out to schedule a service call. a quick assessment can tell you exactly what you're dealing with.
Q: Can I still use my garage door if a spring is broken? A: Technically, some openers will try to force the door open, but this puts severe strain on the motor and can damage the opener, cables, and door panels. It's best to avoid operating the door until the spring is replaced. If your car is trapped inside, most doors have an emergency release cord that lets you lift the door manually. though with a broken spring, the door will be very heavy.
Q: How do I know if I have torsion or extension springs? A: Look above your garage door when it's closed. If you see a horizontal metal rod with coiled springs mounted to it, those are torsion springs. If you see springs running along the horizontal tracks on the left and right sides of the door, those are extension springs.
Q: Should I upgrade to higher-cycle springs when replacing? A: If your household uses the garage door frequently. especially as the main entry to your home, which is common in Glendora. upgrading to springs rated for 25,000 or more cycles is a smart long-term investment. The upfront cost is higher, but you could easily double the lifespan compared to standard springs.