2026-08-13 7 min read
If your garage door won't open or you hear a loud bang from the garage, a snapped spring is likely the culprit. Garage door springs in Monrovia fail more often than homeowners expect, and they're one of the most common repairs we handle. The good news: understanding what they do and when they fail helps you avoid both unsafe DIY attempts and inflated repair bills.
Your garage door weighs between 300 and 500 pounds. The springs don't lift that weight directly. Instead, they counterbalance it, making the opener's job manageable and allowing manual operation if the power fails. Without functioning springs, your door becomes a 400-pound liability.
Two main types exist: torsion springs (the horizontal rod above the door) and extension springs (on either side of the track). Torsion springs are more durable and common in newer homes. Extension springs are cheaper upfront but wear faster. Both types last roughly 7 to 9 years under normal use, though this depends heavily on how many times you open and close the door daily.
Springs fail because metal fatigues. Every opening cycle puts stress on the coil. After thousands of cycles, the metal weakens and eventually snaps. You'll know immediately. A broken spring produces a loud bang or crack, usually followed by a door that won't open at all or won't stay up.
Some homeowners notice warning signs earlier. Listen for squeaking or creaking sounds when opening the door. A door that feels heavier than usual or moves slowly and unevenly also points to weakening springs. If you spot any of these, read our guide on 5 signs your garage door spring needs replacement before damage spreads.
**Need garage door springs in Monrovia today?** Call 626-635-3574. we cover same-day service across the area.
Spring replacement typically costs between $200 and $400 per spring in Monrovia and surrounding Orange County areas. Most doors have two springs, so budget $400 to $800 total. The cost varies based on spring type, door weight, and whether both springs need replacement at once.
Torsion springs cost more upfront (often $250 to $350 each) but last longer and work more smoothly. Extension springs run $150 to $250 but require replacement more often. Here's the budget-smart move: if one spring has failed, replace both. Springs installed at the same time wear at the same rate, preventing a second repair bill six months later.
Labor makes up half the cost. Spring replacement requires specialized tools, knowledge of tension mechanics, and safety awareness. One wrong move can cause serious injury. This isn't a job for YouTube tutorials.
Attempting DIY spring replacement is dangerous. Under-tensioned springs won't counterbalance properly, overworking your opener and straining the door. Over-tensioned springs create a door that slams shut or won't stay up. Both scenarios damage the opener and create safety hazards for your family.
Professional technicians measure door weight, adjust tension precisely, and test everything before leaving. When you schedule a free quote with Garage Door Monrovia, our team walks you through options and explains exactly what you're paying for. Most same-day estimates take under 15 minutes.
Springs last longer when your door stays balanced and aligned. Regular maintenance checks catch worn tracks, misaligned sensors, and lubrication needs before they stress the springs. If you're also running an older opener without battery backup, consider that upgrade too. Learn more about garage door openers with battery backup for Monrovia homeowners.
The cost of spring replacement feels high in the moment, but it's significantly cheaper than replacing an entire garage door system or paying for emergency repairs at midnight. Plan ahead when possible.
Don't let a broken spring strand your car in the garage or force you to manually lift a 400-pound door. Call 626-635-3574 today for an honest estimate, or get a same-day estimate online. We serve Monrovia and nearby Pasadena, South Pasadena, and Sierra Madre.
How long do garage door springs last? Torsion and extension springs typically last 7 to 9 years with normal use. Frequent opening and closing (more than 15 times daily) reduces lifespan. Springs show warning signs like squeaking or uneven door movement before they snap.
Can I replace just one spring? Technically yes, but we don't recommend it. When one spring fails, the other is usually near the end of its life. Replacing both at once costs more upfront but saves you a second service call within months and keeps wear cycles balanced.
Is spring replacement an emergency repair? Not always, unless your door won't open or close. If it's stuck, schedule service same-day. If you notice warning signs like squeaking, book an appointment within a week. Small issues become expensive emergencies when ignored.
What's the difference between torsion and extension springs? Torsion springs sit horizontally above the door and last longer (8 to 9 years). Extension springs hang on either side and last 5 to 7 years. Torsion systems cost more but save money over time through longer intervals between replacements.
Why shouldn't I fix this myself? Springs hold enormous tension needed to counterbalance a heavy door. A slip with the wrong tool, improper measurement, or incorrect tension can cause serious injury or damage your opener and door permanently.