Garage Door Springs 101: Answers to 15 Common Questions

Garage door springs are essential for smooth operation. They make opening and closing your door more manageable and prevent it from becoming damaged by falling too quickly. Because they rely on high tension to store energy, garage door springs can be dangerous. It’s essential to know the risks involved before attempting any repairs.   

To help you understand how garage door springs function and how to troubleshoot issues with them, we’ve consolidated some of the most common questions we get. If you're dealing with a broken spring or similar issue, this guide has the answers. 

1. What is the most common garage door spring?

There are two types of garage door springs. The most common is the torsion spring, which is mounted in pairs above the garage door and uses torque to lift and lower it. The second type is extension springs, which stretch along the sides of lighter or older garage doors to assist with movement.

2. How do garage door springs work?

Garage door springs work by counterbalancing the door's weight. Torsion springs store energy by twisting and releasing it to help lift the door, while extension springs stretch and contract to assist in the door’s movement. This counterbalancing makes lifting the heavy door easier for the opener or a person.

3. How do you adjust the tension on garage door springs?

If your door doesn’t open and close as smoothly as you’d like, the tension could be an issue. Adjusting spring tension requires careful handling:

  • Torsion Springs: Use a winding bar to tighten or loosen the spring on the adjustment cone.

  • Extension Springs: Adjust the cable connected to the spring to modify the tension.

Always disconnect the garage door opener and follow safety precautions. If you’re unsure, call a professional to avoid accidents.

4. How long do garage door springs last?

Most garage door springs last 7-10 years or about 10,000 cycles (a cycle is one full door opening and closing). Heavy use can shorten this lifespan, but high-cycle springs are available for more extended durability.

5. What are the signs that you need new garage door springs?

Signs you may need new garage door springs include:

  • Visible gaps in the coils of the spring.

  • Rust or corrosion on the spring.

  • Loud noises when operating the door, like creaking or snapping.

  • The door appears uneven or fails to stay open.

  • The garage door won’t open or feels excessively heavy.

  • The garage door slams shut.

  • The garage door opener strains to open the door.

6. Should I replace both garage door springs at the same time?

Yes, it’s best to replace both springs at the same time, even if only one is broken. This ensures balanced operation and prevents uneven wear that could lead to another spring breaking soon after.

7. How Do I Tell Which Garage Door Spring I Need?

To determine which spring you need, you’ll need to measure:

  1. Length: Measure the spring when it’s unwound.

  2. Wire Size: Measure the diameter of the wire.

  3. Inner Diameter: Look for the diameter of the spring's opening.

  4. Wind Direction: Identify if it’s a left-wind or right-wind spring (look for the coil direction).

You can also check for color codes on the spring, which often indicate the spring’s tension rating.

8. What Do Colors on Garage Door Springs Mean?

The colors on garage door springs indicate their tension rating. On torsion springs, the painted ends indicate the wire width in inches or millimeters. 

For extension springs, color codes denote the lifting weight for which two springs are rated.

9. What Is the Difference Between 1.75 and 2 Garage Door Springs?

The difference lies in the inner diameter of the spring. A 1.75-inch spring has a smaller diameter than a 2-inch spring. A larger diameter indicates a higher weight capacity. However, the choice depends on your garage door’s setup and requirements. Consult a professional to determine the correct size.

10. Can I Replace a Garage Door Spring Myself?

While replacing a garage door spring yourself is possible, it’s not recommended. Springs are under high tension and can cause serious injury if mishandled. Hiring a professional ensures safety and proper installation.

11. Can I Replace a Garage Door Spring with a Longer One?

No, you shouldn’t replace a spring with a longer one. Springs are designed to match the door’s weight and size. A longer spring could cause improper tension, leading to performance issues and potential damage.

12. What Happens If I Use the Wrong Spring on My Garage Door?

Using the wrong spring can cause:

  • Imbalance: The door may not open or close properly.

  • Overstrain: The garage door opener may wear out faster.

  • Safety Hazards: Incorrect springs could snap unexpectedly.

Always ensure you’re using the correct spring for your garage door.

13. How Long Does It Take to Replace Garage Door Springs?

Replacing garage door springs usually takes a professional 1-2 hours, depending on the door's complexity and the type of springs. Attempting to replace springs yourself can take much longer and pose safety risks.

14. How much does it cost to replace a spring on a garage door?

The cost to replace a garage door spring typically ranges from $350 to $450, depending on the spring type and labor involved. Torsion springs cost more than extension springs but are safer and more durable.

15. How Do You Open a Garage Door with a Broken Spring?

To open a garage door with a broken spring:

  1. Disconnect the opener: Pull the emergency release cord.

  2. Lift manually: Get help, as the door will be heavy.

  3. Secure the door: Use clamps to keep the door open if needed.

It’s best to avoid using the door until it’s repaired.

Get Professional Garage Door Spring Repair

Garage door springs are complex and potentially dangerous to handle. When in doubt, always consult a professional. At Metro Garage Door Co., we’re here to help with all your garage door needs in the Twin Cities metro area. Contact us today for expert repair and installation services!


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