A sketch of the idea, not measured data.
IDC Spring, a spring manufacturer, says that if a door is routinely subjected to very cold temperatures, it can cause the steel in the springs to contract, become brittle and break prematurely (IDC Spring). A spring that breaks is a call-a-pro repair.
Clopay says winter breakage is more common because spring wire becomes more brittle and weaker in colder temperatures. The sketch in the next section shows that as a cold-weather curve sitting lower than the mild-weather one. The chart is a sketch of the idea, not measured data.
A torsion spring holds stored energy. You can look at it from the floor without touching it. Inspecting it up close, lubricating it, adjusting it and replacing it belong to a technician.
The ratings come from IDC Spring, a spring manufacturer: a standard spring is designed to last 10,000 cycles, and higher-cycle springs made with certain wire types can offer 25,000 or even 50,000. The counter stops at the rating you pick; a real spring can break before or after it.
A sketch of the idea, not measured data: the lower a wire's curve sits, the fewer cycles it lasts at the same stress.
In the sketch, a small crack appears in the wire cross-section.
In the sketch, the crack gets longer as the cycle count climbs.
In the sketch, the wire breaks once the crack has crossed it. A spring that breaks is a call-a-pro repair; stop using the door.
A spring's cycle rating is not a promise that it breaks at exactly that cycle. Age and cycle count, with a technician's advice, are the practical way to decide when to replace it.
A spring that has sat unused overnight in a cold garage takes its first load of the day at the coldest point. The sketch shows that as a cold thermometer on the wall.
Clopay's advice is to replace springs if you have lived in the home seven or more years, use the door daily and have never replaced them.
On a cold morning the first cycle loads a spring that, Clopay says, has become more brittle and weaker in the cold.
A standard spring is rated for about 10,000 cycles, one cycle is one full open and close, and at four cycles a day that is about seven years (IDC Spring, a spring manufacturer).
Clopay says winter breakage is more common because spring wire becomes more brittle and weaker in colder temperatures. This page does not give a failure-rate figure for any temperature or weekday, because no source we can cite states one. Everything animated here is a sketch of the idea, not measured data.
The math is the rating divided by your cycles per day. IDC Spring, a spring manufacturer says a standard spring is designed to last 10,000 cycles and that four cycles a day gives about seven years; higher-cycle springs can offer 25,000 or even 50,000 cycles.
The chart marks the year your spring uses up its rating at your cycles per day. It does not show how strong the spring is along the way.
Clopay's advice is to replace springs if you have lived in the home seven or more years, use the door daily and have never replaced them. IDC Spring, a spring manufacturer says certain wire types can offer 25,000 or even 50,000 cycles; ask your installer which class is in the quote. Leave springs to a technician, lubrication included.