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How Garage Door Springs Work

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How Garage Door Springs Work

It is recommended that you call a professional garage door company to perform a spring change.  Spring changes are dangerous and can cause serious injury.  Spring changes generally run between $115.00 for a single spring change and $200.00 for a double spring change.  If you are asked to pay more than $200.00 you might want to call around and get a better price, of course based on where you live will also have a bearing on cost.    

Make sure that your door is balanced when the spring change is done.  There are 3 things that you should check:

1- The door should come to the ground without crashing down with a thud.  If it does this is known as a heavy door.  A properly balanced door should close to the ground without a sudden drop.

2- When raising the door it should hang approximately waist high without shooting up or crashing to the ground.

3- When in the up position it should stay fully in the up position and not hang down.  Also when you bring the door down from the up position it should come down without a lot of force.  If it is difficult to bring down the door is not balanced. 

Average cycle life of garage door springs is 10,000 - 12,000 cycles and the industry average is 7 years.  Based on door usage this will vary, it is not uncommon for springs to last 10 - 12 years.

Garage door springs simply provide the lift to raise and lower the door.  A garage door opener simply guides the door.

Which spring do you need?  That depends on the weight and size of your door.   If your door weighs 150 lbs and is 7 ft tall, you will need a spring that provides 150 lbs of lift for a 7 ft tall door.  Using a spring that provides to much or too little lift will not properly balance the door and can cause damage to the door or opener and possibly injury.

The amount of lift and number of cycles a spring will last is based on 4 factors:

1- wire size  2- ID (Inside Diameter)  3- Length  4- Height of Door/Radius of track

(example:  .250 wire x 2" ID x 30" length,  7 ft door with 12"radius track)  

Result  149 lbs of lift and springs will last approximately 15,000 cycles