Anonymous wrote:I want to say it was in the $200-300 range - and not a DIY project.
I just did this myself (and I am not particularly handy) based on watching a couple of you-tube videos. I ordered springs and a winding tool (basically, a pair of metal bars that are sized to fit into slots at the end of the springs) through Amazon for about $50. I was quoted about $400 to replace 2 springs for my 9 x 16 garage door in Arlington. Most doors have two springs and should be replaced together because the other (non-broken) spring may go at any time. Honestly, the hardest part was figuring out which springs to order (springs come in different gauges and lengths, and you are supposed to match the existing springs). So you take the springs apart and use a ruler to identify the total length of the uncompressed spring and the number of coils per section (e.g., 10 coils per 3 inch section). I have since been told that it is not too important to match the old springs if you are changing both springs since your real goal is to equalize the spring pressure on both sides of the door.
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