Coil Spring Snapped

Thanks for posting, Sara. Your pivot shoe looks like our 15-180 Coil Balance Shoe; to be safe, carefully go over the dimensions listed on the product page to make sure they match your old part. This pivot shoe is compatible with our Series 190 Coil Springs. See if there are stamps on your old springs that indicate the weight they need to support; if not, let us know and we can help you choose the springs you need.  

So, without a stamp on the old spring we're going to need to give you a little homework. I need you to remove the sash from the window and place it on a scale. Give me its exact weight, as precisely as you are able. Then, tell me how many springs are used on each side of the sash in total. We can use that information to calculate the proper strength of your springs.

I know the shoe isn't exactly the same, but our 15-180 will still work. Yours is just an older version.

All we need now is the weight of the sash and the number of springs you have on each side.

Great! In that case, I recommend our S190-840. Each of these can carry 8 pounds, so using one on each side should work well for your sash. I'm confident this will work with your existing pivot shoe, too.