Why a torsion spring lets go on a cold Pasadena morning, what the pre-1960 housing stock here means for repairs, and what to check before you call.
Pasadena sits in a mild temperate band, so we don't get the hard freezes that snap steel elsewhere in the country. What we do get is a swing - warm afternoons dropping into cold mornings, especially in the canyon-adjacent streets toward Altadena and up. Steel contracts as it cools, and a torsion spring that's already fatigued from twenty years of cycling can lose just enough give on a 40-degree morning to finish the job. It's rarely the cold alone. It's the cold finding the weak point.
That weak point is often the spring itself, not the weather. Housing across this service area went up mostly between 1943 and 2012, with the median build year at 1959, and across the 65 named communities we track, the stock leans heavily pre-1960. A spring installed when a house like that was built, or even one replaced in the 1980s, has had decades of temperature cycling to work through its rated coil count. Cold doesn't cause the failure so much as it removes the last bit of slack the spring had left.
We don't have pricing figures to publish here, and giving you a number pulled from nowhere would do you less good than telling you honestly what we don't know yet. Cost on a torsion spring job depends on the door weight, whether it's a single 16-foot double door or two singles, the spring size the opener needs, and whether the drums or bearings went with it. On a house from the 1950s or 60s original hardware era, we sometimes find the cable and bearing plates need attention at the same time the spring does, which changes the job.
What we can tell you: a broken spring on a double door almost always means both springs get replaced together, even if only one let go, because the other is the same age and under the same load. That's not an upsell, it's how torsion pairs work. Ask for a written breakdown before the truck leaves so you know what you paid for and why.
Before you call anyone, look at these things from a safe distance - do not put your hands near the springs or try to lift the door manually if a spring has broken:
If your home is on the older end of this area's range, closer to that 1959 median build year than to newer construction, it's worth asking whoever comes out whether the drums and bearings match the spring size, since mismatched replacements from an earlier repair are common in houses that have had more than one owner. That's a five-minute check that saves a second call.
Describe the symptom - won’t open, loud bang, opener runs but the door won’t move.
A technician tests the door under power and by hand and finds what actually failed.
You get the fix that’s needed and what drives the cost - before any work starts.
The repair is done, the door is set true and tested, and the work area left clean.
Repair and installation work for Pasadena homes and businesses.
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Broken spring, jammed opener, or door stuck at 2am - Pasadena Garage Door Pros handles emergency garage door repair across Pasadena's older housing stock and 65 nearby areas.
Learn moreStraight answers about garage door repair in Pasadena. Still unsure? Ask us directly.
Not on its own. Pasadena's climate is mild temperate, so we don't see hard freezes, but a cool morning can be the final push on a spring that's already worn down from years of cycling. The cold exposes the weak point rather than creating it.
Torsion springs work in pairs matched to the same door weight and age. If one gave out from fatigue, the other has been under identical stress for the same number of years, so we replace them together to avoid a second call in a few months.
It can. Housing in this area runs mostly pre-1960, and original hardware from that era sometimes has mismatched drums or bearings from an earlier repair. Worth asking the tech to check the whole assembly, not just swap the spring.
Don't try to force it or lift manually. Without spring tension the door is much heavier than it looks, and the cables can be under uneven load. Leave it closed or partway open until someone can look at it.
Tell us what it’s doing and where you are in Pasadena - we’ll take it from there.
