Cold winters put a specific kind of stress on older torsion springs and chain-drive openers: steel contracts, lubricant thickens, and a spring that was already near the end of its rated cycle count loses tension faster in hard cold than it would in a mild climate. Applewood sits in the same severe cold band as the rest of the service area, so a door that's been fine for years can start acting up the first genuinely cold week of the season - not because anything failed suddenly, but because cold exposed wear that was already there. Add to that a build year of 1970 and you've got hardware that was never designed around today's cycle expectations, installed in a climate that's hard on steel and lubricant both. That combination - old hardware, cold winters - is why Applewood's service calls tend to cluster around the first cold snap rather than spreading evenly through the year.