When to Call Someone
If the door won't budge and you hear a bang from the garage first, that's a torsion spring letting go, not a motor problem. Don't pull the emergency release and try to lift it by hand - a broken spring on a standard double door is heavy enough to drop a panel or a finger. Call a pro when the door is dead weight, when one cable looks slack while the other is still tight, or when the opener strains and clicks but the door barely moves. Those are spring and cable jobs, not something to troubleshoot with WD-40 and hope. Most of the houses on this side of the county went up between 1961 and 2007, with the bulk from the 1980s and 90s, so a lot of garages still carry the original torsion hardware from that build window - parts that have had thirty-plus winters on them. If your door is from that era and it's never had the spring replaced, you're closer to a failure than you think, cold weather or not. The honest limit here: if the drum or the track is also bent from the same event, that's a bigger job than a spring swap, and we'll tell you straight if replacement makes more sense than patching it.
What Is Going On
A torsion spring is rated for a set number of open-close cycles, somewhere in the tens of thousands, and it doesn't care what the calendar says once it's near that number. What cold weather does is expose a spring that's already close to done. The steel is stiffer, the coil has slightly less give, and the last few thousand cycles get used up fast. For a house built in the 1988 median year for this area, that's three and a half decades of cycles on original hardware if nothing's been swapped - plenty of time to reach the end of a spring's rated life regardless of temperature. What usually happens is the spring was fine on Tuesday and gone on a cold Wednesday, and the owner assumes the cold broke it. The cold didn't break it. The cold just happened to be there on the day the fatigue caught up with it. That distinction matters because it changes what we look at: not just the spring, but the drum, the cable, and the bearing plate it's been working against for all those cycles.
The Common Mistake
The mistake we see most is someone spraying the track and rollers with oil after a cold-weather failure, assuming lubrication was the whole problem, then putting the door back into daily use with a spring that's already stretched or sagging. A sagging spring doesn't always snap clean - sometimes it just loses tension gradually, and the opener starts doing the lifting the spring used to do. That burns out the opener motor faster, and now you've got two problems instead of one. The other mistake is matching a new spring to the old one by eye instead of by the door's actual weight and wind count. Springs are sized to the pound for the door they're lifting; a close guess works until it doesn't, and an undersized spring fails again within a season. If your garage is original to a house from that 1980s-90s stretch common across this area, it's worth having the spring's wind count and wire gauge actually checked against the door, not just swapped for whatever looks similar.
