Adjusting spring tension is not something to try yourself. It is a fine-tuning job technicians do with winding bars sized to the spring, and it carries the same risk as a full replacement. If your door feels heavy, hangs crooked, or slams down, the fix is a service call, not a screwdriver.
Why This Isn't a Do-It-Yourself Job
Torsion springs sit on a shaft above the door and hold the door's full weight in tension when it is closed. On sectional doors, extension springs usually stretch above the horizontal tracks. Conventional torsion springs use winding bars sized to the winding cone; extension springs use a different adjustment method. Either system stores energy that can release suddenly if handled incorrectly. That is true whether you are adjusting tension by a quarter turn or swapping the spring out entirely.
Signs Your Springs Need Attention
- The door feels noticeably heavier to lift than it used to.
- It does not stay put when opened halfway, and drifts up or down on its own.
- One side looks lower than the other, or the door hangs crooked.
- You hear a loud bang, which usually means a spring already broke.
What You Can Safely Check
With the door fully closed, look at the spring from the floor. A visible gap in the coil means it is broken, and the door should stay parked until it is fixed. Do not stand under the door, do not touch the spring or the bottom brackets, and do not pull the emergency release to test it, since a door with a bad spring can drop without warning.
What a Technician Does
We check the door's weight and balance, match the replacement spring's wire size and wind to the door, and set the specified tension and verify smooth travel and balance without the opener fighting it. If both springs are original, we typically replace them as a pair since they wear at close to the same rate. Spring replacement covers the full process.
FAQ
Can I adjust garage door spring tension myself?
We do not recommend it. The tools and technique are the same ones used for a full replacement, and a mistake can release enough force to cause a serious injury.
How do I know if I have torsion or extension springs?
Torsion springs mount on a shaft directly above a closed door. Extension springs run along the horizontal tracks on either side. Most garages built in the last few decades use torsion springs. See our torsion spring guide or extension spring guide for more on each type.
What does spring adjustment cost?
We do not quote spring work sight unseen. See garage door spring replacement cost for what changes the price, or call for a firm number.
Will a misadjusted spring damage my opener?
Yes. If the spring is not carrying its share of the door's weight, the opener motor takes on the difference, which shortens its life.
If your door feels heavy, hangs crooked, or you can see a broken spring, call (916) 838-8182. We handle spring adjustments and replacements across the Sacramento area, most often the same day, with a $45 diagnostic trip fee and the price agreed before we start.
Photo: Blizzard6204 (CC0); resized and converted for this page.
Share:
