2026-04-14 7 min read
If you've ever heard a loud bang from your garage in the morning and walked out to find the door sitting completely still. that's almost always a broken spring. It's one of the most common calls we get here at Garage Door Brentwood, and it catches homeowners completely off guard every time.
Understanding what springs do, what causes them to fail, and how much it costs to fix them can save you a lot of stress. and maybe keep you from making a costly mistake trying to handle it yourself.
Your garage door weighs anywhere from 130 to over 300 pounds depending on its size and material. The spring system is what makes that weight manageable. it counterbalances the door so your opener only needs to do a fraction of the work. Without functioning springs, even a powerful motor can't lift the door safely.
There are two main types:
- Torsion springs. mounted on a metal bar above the door opening. These are the modern standard, handling heavier doors with smoother operation. They typically last 10,000 to 20,000 cycles. - Extension springs. older style, running along the sides of the tracks. Cheaper to replace but shorter-lived and considered less safe if one snaps without a safety cable.
If your Brentwood home was built in the last 15,20 years. and many were, given the rapid growth in neighborhoods like Shadow Lakes and Deer Ridge during the 2000s. there's a good chance you have a torsion spring system.
Brentwood's climate plays a real role here. Temperatures in the East Contra Costa area swing from around 40°F on cold winter nights to well over 90°F during peak summer days, with the Delta breeze bringing rapid cool-downs in late afternoon. That daily thermal expansion and contraction is hard on metal components over time.
On top of that, Brentwood lies in the rain shadow of Mt. Diablo and receives less annual rainfall than much of the Bay Area. which means lower humidity most of the year. Low-humidity air can actually accelerate metal fatigue by reducing natural lubrication. Springs that aren't regularly treated with a lithium-based lubricant tend to develop surface rust and lose flexibility faster than they should.
If your door gets heavy use. say, multiple family members leaving for school and work every morning. you could easily burn through 1,500+ cycles per year. At that rate, a standard spring set reaches the end of its rated life in seven to ten years.
Springs rarely fail with zero warning. Watch for these signals:
- The door feels unusually heavy when you lift it manually. A properly balanced door should feel like it weighs around 10,15 pounds with the spring doing the rest of the work. - The door won't stay open halfway. Lift it to waist height and let go. it should stay put. If it drifts down, the springs are losing tension. - Visible gaps in the torsion spring coils. Healthy coils are tightly wound and touching. Gaps mean a spring that's near or past failure. - The opener strains or reverses mid-cycle. Your motor is working harder than it should because the springs aren't carrying their load. - A sudden loud bang. this is the spring snapping under tension. Stop using the door immediately.
If you're also noticing seasonal changes in door behavior, our post on how Brentwood summers damage garage door components covers why heat specifically accelerates these problems.
For most Brentwood homeowners, professional spring replacement runs between $150 and $350 per spring, including parts and labor. Replacing a pair (which is almost always recommended) typically falls in the $200,$500 range depending on spring type and door size.
A few things that affect your final cost:
- Door size and weight. a heavy double-car insulated steel door needs stronger, more expensive springs than a lightweight single-car aluminum door. - Spring quality. budget springs are rated for around 5,000,10,000 cycles. High-cycle springs can hit 25,000,50,000 cycles and last significantly longer. The price difference in parts is modest; the difference in lifespan is not. - Whether you replace one or both. always replace both springs at the same time. They age at the same rate, and replacing only one leaves an imbalanced door that's likely to strand you again within months.
If you're already dealing with other worn components. frayed cables, bent rollers, a struggling opener. it may make sense to address everything at once. Check out our full services overview to understand what a complete tune-up or repair visit typically includes.
This comes up a lot, and the answer is simple: torsion springs store enormous energy under tension. When that energy releases unexpectedly. which it can during improper removal. the results can be severe. The U.S. Consumer Product Safety Commission reports approximately 30,000 garage door injuries annually, and a significant portion involve spring-related incidents.
Professional technicians use calibrated winding bars, understand spring sizing down to the wire gauge and coil count, and carry the insurance to back their work. The parts cost savings from a DIY attempt do not justify the risk. If you have questions about what's involved in a safe spring replacement, our FAQ page covers the most common homeowner questions.
Once your springs are replaced, a little maintenance goes a long way:
1. Lubricate springs every 3,6 months using a lithium-based or silicone spray lubricant. Avoid WD-40. it's a solvent, not a lubricant, and can actually dry out the metal. 2. Test door balance twice a year. Disconnect the opener, lift the door to waist height manually, and release. It should stay put with minimal drift. 3. Schedule an annual inspection, especially before summer when daily heat cycling intensifies.
Spring maintenance pairs naturally with a broader seasonal checkup. our spring maintenance checklist for Brentwood homeowners walks through everything worth doing before the hot months hit.
Most standard springs are rated for 7,12 years under normal use. High-cycle springs can last 15,20 years. Brentwood's temperature swings and dry air can accelerate wear if springs aren't regularly lubricated, so staying on top of maintenance makes a real difference.
Technically yes. but you shouldn't. Running the opener with a broken spring puts severe strain on the motor and can damage the cables, tracks, and opener itself. If the spring just broke, disconnect the opener and leave the door in place until a technician can assess it.
Always replace both. Springs are installed in pairs and wear at the same rate. Replacing only the broken one leaves you with mismatched tension and a second spring that's already near the end of its life. meaning another service call is likely just months away.