7 Safe Steps on How to Adjust Garage Door Springs at Home

Adjusting garage door springs might seem simple, but doing it wrong can lead to injury or damage. This guide will help homeowners and renters understand how to adjust garage door springs safely, including how to adjust a double-spring garage door. Whether you're trying to save money or simply want to do it yourself, this step-by-step breakdown will help you decide if it's a task you should handle or best left to a pro.

Garage door springs are under high tension, and one wrong move can cause serious injury, especially with torsion springs requiring the right tools and experience. If you're not confident, contacting a trained technician is best. That said, many homeowners can safely adjust springs with the proper precautions. Common signs that your springs may need adjustment include the door not opening smoothly, slamming shut, or feeling unusually heavy. This guide focuses on torsion spring systems, the most common type in modern garages.

Creating a safe work environment before you adjust the garage door springs is essential. This means cutting off power and preventing the door from moving. Taking these steps first will reduce the chance of injury or unexpected movement while you're working on the springs:

• Unplug or switch off the power to the garage door opener.
• Slightly open the garage door to reduce tension on the springs.
• Clamp locking pliers or C-clamps to the tracks just below the bottom rollers to hold the door in place.

Before you adjust anything, you must know what type of spring system your garage door uses and how the springs are wound. This helps you apply tension correctly and evenly, especially for double-spring setups. Here's what to look for:

• Most doors use torsion springs located above the door on a metal shaft.
• Some setups have a double spring system, with one spring on each side.
• Check the direction of each spring wind, left or right, since it affects how you adjust tension.
• Use chalk or a marker to note the current position of each spring's collar for reference.

Loosening the set screws is a critical step because this is where you begin to release the spring's stored tension. It must be done slowly and securely to avoid any risk of injury. Follow these safety-first tips:

• Insert the first winding bar fully into the winding cone before doing anything else.
• While holding the bar firmly, loosen the set screws using a wrench.
• Keep one bar in the cone at all times, and never remove both simultaneously.
• Wear gloves and stay alert; the spring may move slightly as tension releases.

Once the set screws are loosened, you can begin winding the spring to increase or decrease tension. The key is to make minor, controlled adjustments and test frequently. Use this guide to help you adjust correctly:

• To increase tension, Wind the spring upward (usually clockwise).
• To decrease tension, Wind the spring downward (counterclockwise).
• One complete turn usually equals one inch of door movement.
• Generally, use one complete turn every 7 feet of door height.
• Adjust each side the same amount for double spring systems to keep balance.

After making adjustments, it's time to lock everything back in place. Be sure everything is secure before you remove your tools and test the door again:

• While holding the winding bar in place, tighten the set screws back onto the torsion spring shaft.
• Double-check that the screws are firmly secured and that the spring hasn't shifted.
• Remove the winding bars carefully, one at a time.
• Take off the clamps from the tracks once the tools are entirely removed.

With the spring adjusted and the screws tightened, you'll now check if the door is properly balanced. This helps ensure the spring tension is correct, and the door operates safely:

• Lift the garage door manually to about halfway and let go.
• A properly balanced door should stay in place or move very slowly.
• Adjust the spring slightly if the door slams shut or shoots upward.
• Both sides should react evenly for double spring doors—no tilting or jerking.

The final step is reconnecting the garage door opener and doing a test run. You want to make sure everything is working smoothly and safely before calling it done:

• Plug the garage door opener back in or switch on the breaker.
• Use the remote or wall control to open and close the door a few times.
• Watch for jerky movement, loud noises, or uneven motion.
• If anything seems off, pause and recheck your adjustments or contact a pro.

Learning to adjust garage door springs can help homeowners and renters save time and money, but it's not without risks. Spring tension, especially in double spring systems, can be dangerous. Leaving the job to a professional is best if you're unsure or lack the proper tools. Local Garage Door Pros offers expert service, fast response, and safe garage door repair solutions. Contact us today to keep your garage door working safely.

Always unplug the opener, use proper tools, wear safety gear, and follow step-by-step instructions. If unsure, contact a professional to avoid injury.

Yes, if you have essential tools and follow safety steps. However, the spring tension is dangerous. For double spring systems, extra caution is needed, or call a pro.

If the door opens unevenly, slams shut, or feels heavy, the springs may need tension adjustment. Test by disconnecting the opener and lifting the door manually.

You'll need winding bars, wrenches, a ladder, safety glasses, and gloves. Never use screwdrivers as winding bars—they can slip and cause injury.

Garage door springs rarely need adjustment unless the door isn't balanced. Inspect tension every 6–12 months, especially if the door feels off.