Coil balance replacement needed
Quick Learner from Bremerton WA
Aug 15, 2026 8:36 pm
I have a coil balance on my final window that has failed. I need help in identifying and buying a replacement coil balance. There are no numbers or name on the window to tell me the manufacturer so I’m hoping the pictures I’ve included will help, there is also no easy way to uninstall and reinstall a balance without actually heating up the vinyl frame. Any help you can give me would be greatly appreciated it.
3 user uploaded images
5 Replies
Bob from SWISCO
Aug 16, 2026 4:02 am
Hello there. This is a 15-087 Pivot Shoe. It works with Series 180 Coil Balance springs sold separately. To know what spring weights to pick, weigh the window sash. You can use that weight to find the right spring weights. See the first video below. As far as how to remove and replace, forming a cutout will be your best bet. The second video shows how to do this for a different but similar balance system.
Series 180 coil balance diagram
Quick Learner from Bremerton WA
Aug 26, 2026 2:36 pm
Thank you very much, I'll get back with the weigh shortly.
Quick Learner from Bremerton WA
Aug 26, 2026 4:54 pm
13.6 lbs is how much it weighs, since these are older than 10 years old I think I'll skip the spreader and create a cutout at the top where the cover is. I think it's a good idea to not only replace the coil spring but the coil housing pivot as well. Thoughts? thanks much Bob
Bob from SWISCO
Yesterday 1:45 pm
Great, thanks for getting back to us. For that sash weight I recommend the 7 lb option. One on each side will give you 14 pounds of support, which should be perfect.
As for replacing the housings with the spring, it definitely couldn't hurt. I know I personally prefer a clean slate, so if it's in your budget then I say go for it.
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