The reason opener installs (not just repairs) come up so often here isn't age alone - it's what age plus cold does to the hardware. This is a severe cold climate band, and a chain-drive or screw-drive opener built for a milder region works the motor harder every winter: cold grease thickens, the door itself gets heavier as wood panels take on moisture and then freeze, and an undersized or worn-out opener starts straining on every cycle below freezing. On houses from the 1958-1991 stock, the original opener - if there still is one - was almost never sized for today's heavier insulated doors or for the duty cycle a modern household puts on a garage door. People aren't replacing openers here because the old one broke outright as often as they are because it's been laboring for a decade and finally can't handle a cold snap. That's a different job than swapping a dead unit, and it changes what we recommend for horsepower and drive type.