What Is Going On
A torsion spring does one job
It holds the weight of the door so the opener only has to move it, not lift it. Steel under that kind of constant twist fatigues over time, the same way a paperclip weakens after enough bends. It doesn't fail gradually - one day it's fine, the next it's a loud bang in the garage and a door that won't budge.
San Ramon's housing stock runs from 1938 to 2008
With the median build year landing at 1973, and most of it clusters in that 1960s-and-70s tract-home wave spread across the area's 29 named neighborhoods. That matters because a lot of those original doors still carry their original side-mounted torsion hardware. Fifty-plus years of cycles on a spring that was never swapped out is a lot of fatigue sitting coiled in a bracket over your car.
The spring usually isn't the only thing that's aged
Cables, rollers, and the galvanized coating on the spring itself wear down together, so when one part finally lets go, it's often not acting alone.
When to Call Someone
If the spring has already broken - a loud bang, the door won't open, or it slams down when you try - don't try to force it with the opener. The opener isn't built to lift a door with no spring tension, and running it anyway usually burns out the motor on top of the spring problem you already have.
Call same-day if the door is stuck shut and that's your only way in or out of the garage, or if a cable has snapped along with the spring - a loose cable under tension is a real hazard, not just an inconvenience.
If the door still opens but sounds different, sags slightly to one side, or the opener strains more than it used to, that's a spring losing tension, not yet broken. That's worth a call this week, not an emergency call tonight. Catching it before it snaps means a planned repair instead of a garage you can't use.
One thing we won't do is tell you a torsion spring is a weekend DIY job. The spring is wound under several hundred pounds of tension and the tools to do it safely aren't things most homeowners own. That's not us padding the job - it's genuinely not worth the risk.
How Local Conditions Play In
San Ramon sits in a mild climate band that still sees occasional freeze nights. That's not dramatic weather, but it's exactly the kind of swing that finishes off a spring that's already tired. Cold steel is less flexible - it contracts slightly and loses a bit of give right when a fatigued coil needs it most. A spring that's been creaking along fine through a mild fall can go in one cold morning.
On a newer door this wouldn't matter much; a spring with plenty of life left shrugs off a cold snap. The issue in San Ramon is the math: a house with a 1973 median build year means a lot of springs out there have already logged decades of lift cycles before that cold night even arrives. The freeze doesn't cause the failure so much as it picks the moment.
This is also why the first cold stretch of the season tends to bring a run of the same call - not because cold weather is rare here, but because it's reliably the trigger for hardware that was already near the end of its life. If your door has been making noise, don't wait for the next cold snap to find out how close it is.
The Cost of This Job
We're not going to put a number here that we can't back up
Spring cost depends on whether it's one spring or a matched pair, the door's size and weight, and whether cables or rollers need attention at the same time. On a lot of San Ramon's older tract homes, we find the spring isn't the only worn part, and quoting a single price before we've looked at the door would be a guess, not a quote.
What we can say is that San Ramon's service area has 114,515 owner-occupied houses and a median household income of $146,657
Which tells us most homeowners here are doing this job once and want it done right rather than patched twice. A spring job is usually a same-visit repair once we've seen the door - it's rarely the kind of thing that needs a return trip, unless the opener or track turns out to need separate attention.
- 114,515 owner-occupied
- $146,657 median household income
If your door is original to a 1960s or 70s build
Ask about replacing both springs even if only one broke. The second one is the same age and has done the same work - it's usually a matter of months, not years, before it follows.
