Garage Door Springs in Kent: Torsion vs. Extension and When to Replace
2026-07-31 5 min read
Your garage door relies on springs to lift a 300 to 400 pound panel dozens of times per year. When one snaps, the door becomes a safety hazard overnight. This guide explains torsion and extension springs, why they fail, and what to expect for cost and timeline near you in Kent.
The Two Types of Garage Door Springs
Most homes use one of two spring systems. Torsion springs sit horizontally above the door and twist to create lifting force. Extension springs hang vertically on each side and stretch as the door opens. Both types wear out, but they fail differently and require different replacement approaches. See our guide on installation timeline: what every homeowner should know.
Torsion springs typically last 7 to 9 years with regular use. They're engineered to cycle 10,000 to 20,000 times before metal fatigue sets in. A snapped torsion spring makes your door nearly impossible to open by hand. Extension springs often last slightly longer but are more visible and can snap with less warning. If you notice a gap in one of your side springs or hear a loud bang from your garage, you likely have a broken extension spring.
Why Springs Fail Before You Expect Them To
Springs don't just wear out randomly. Temperature swings, rust, and lack of lubrication accelerate failure. Kent winters create a perfect storm. Cold makes metal brittle, salt air corrodes the coils, and many homeowners forget to lubricate springs during seasonal maintenance. Read about getting a garage door estimate in kent, ct: what hidden costs most homeowners miss.
Humidity and moisture are silent killers. A spring exposed to moisture without protective coating will corrode from the inside out, weakening the metal until it snaps under normal load. This is especially true for homes near water or in areas with high ground moisture. I've seen springs fail in under five years when corrosion goes unchecked.
Poor maintenance compounds the problem. If your door opener works harder because the springs have lost tension, the whole system wears faster. Your door balance matters more than most homeowners realize. When springs weaken, they transfer extra stress to the opener motor, hinges, and cables. One failing spring can cascade into multiple repairs if left alone.
Read our guide on garage door safety checks in Kent: what you can do yourself) to learn how to spot early warning signs before a spring snaps.
The Cost and Timeline for Spring Replacement
A single torsion spring replacement typically costs between $150 and $300 for parts and labor. Extension spring replacement runs $100 to $200 per spring. If both springs are worn (which they usually are after 7 years), expect $400 to $600 total. This estimate assumes no additional damage to cables, hinges, or the door panel itself.
Labor is the larger component. Spring replacement requires specialized tools and knowledge. A technician needs to safely release the tension, remove the old spring, install the new one, and rebalance your door. This takes 1 to 2 hours for a straightforward job. Same day service is usually available in Kent and surrounding areas if you call before noon.
**Need garage door springs in Kent today?** Call (860) 590-4659. We cover same-day service across the area.
Hidden costs surface when corrosion or cable damage is discovered during inspection. If rust has compromised adjacent components, you may need cable replacement or roller service too. This is why getting a detailed estimate upfront matters. Learn more about what hidden costs most homeowners miss when getting a garage door estimate).
Why DIY Spring Replacement Is Dangerous
This is non-negotiable: do not attempt to replace garage door springs yourself. Springs are under extreme tension. A torsion spring can store enough energy to cause serious injury or death if mishandled. The tools required are specialized and expensive. Even experienced mechanics sometimes hire professionals for spring work because the risk is that high.
I've seen homeowners attempt DIY replacement and end up with pinched fingers, broken wrists, or worse. The door can fall unexpectedly. The spring can snap and strike you. The cable can whip across the garage. These aren't rare accidents; they're documented hazards that occur regularly when untrained people work with spring systems.
Professional technicians carry liability insurance, use proper equipment, and know how to work safely with high-tension components. The $200 to $400 labor cost is worth avoiding a trip to the emergency room.
Getting Professional Help Near You
If your door won't open, one spring has failed, or you hear a loud bang followed by a stuck door, contact a local technician immediately. Visit our spring repair services) to see what we offer, then schedule a free quote today).
Spring replacement is straightforward when handled by trained professionals. Kent Garage Doors has helped hundreds of homeowners avoid the risks and costs of delayed repairs. We can usually schedule same-day or next-day service depending on call time.
Don't ignore a snapped spring. A stuck door is inconvenient. An injury from DIY spring work is permanent. Call us today.
Frequently Asked Questions
How do I know if my garage door spring is broken? The door becomes much heavier to open by hand or won't open at all with the opener. You may hear a loud bang or see a gap in the spring coils. The door may hang unevenly or sag on one side. Call a technician to confirm.
Can I replace just one spring if only one is broken? Technically yes, but both springs typically wear at similar rates. Replacing one leaves the other weak, so failure usually follows soon after. Most technicians recommend replacing both springs at the same time for safety and balance.
How long do garage door springs last? Torsion springs last 7 to 9 years with regular use, cycling 10,000 to 20,000 times. Extension springs may last slightly longer but depend heavily on maintenance and environmental exposure. Corrosion and poor lubrication cut lifespan significantly.
What's the difference between torsion and extension springs? Torsion springs sit horizontally above the door and twist. Extension springs hang vertically on each side and stretch. Torsion springs are more durable and common in newer homes. Extension springs are often found in older systems and fail with less warning.
Is spring replacement an emergency service? Yes, a snapped spring makes your door unsafe and unusable. We offer same-day emergency service in Kent and nearby areas. Call (860) 590-4659 immediately if your door is stuck or unsafe to operate.