What Can Go Wrong
Most houses in Chino Hills were built well after 1990, which means the garage doors themselves are a different animal than what you'd find in an older neighborhood. These are wide steel sectional doors, often 16 feet across for a two-car garage, hung on torsion springs sized to lift that extra width and weight. A single spring doing that job wears out the same way any spring does, but when it goes, the door doesn't ease down - it drops hard, because there's more door for the remaining hardware to fight. On double doors built to this spec you'll usually find two torsion springs working together, and it's common for one to go while the other is still holding, which can fool you into thinking the problem is smaller than it is. Cables fraying at the drum, a bent track from a door that's been running unbalanced for months, a broken center support bracket on a door this wide - all of it traces back to the spring that quit doing its share first. We don't guess at spring size off a guess; a 1990s-and-newer door usually takes a different wire gauge and wind than what a 1960s door around the rest of our service area takes.
What the Repair Takes
For a door this size, replacement springs are matched to the door's weight and the drum size it was built with, not swapped in from whatever's on the truck. On a two-car door of this era we're usually looking at a matched pair of torsion springs, not one - replacing only the broken side on a double-spring setup just means you get a second call in a few months when the other one lets go under uneven load. We check the cables, drums, and center bearing while the door is open and the springs are off, because on a wider door those parts take more stress and show wear sooner. Balance gets tested after the new springs go on - the door should hold at waist height on its own. If it doesn't, something's still off and we don't leave it that way. Honest limitation: if the track is bent or the opener's gears are already stripped from fighting a broken spring, that's a separate repair beyond the spring swap, and we'll tell you before we start, not after.
The Cost of This Job
We don't post a flat number here because the spring size, whether it's one or two springs, and the condition of the rest of the hardware all change the job. A heavier door built to this era's wider two-car garages generally costs more in parts than a narrower, older single door simply because the springs are rated higher. We'll give you the number for your actual door and springs before any work starts, not after.
How to Book
We cover Chino Hills from our Pomona location, about 8 miles out, along with the rest of our service area. See our Chino Hills coverage or call to get your spring sized and scheduled. If you're looking at the broader picture of what we handle out of Pomona, the main spring repair page covers that.
