Replacements for coil window balances

Question

Hello! I have a 23 year old house with a window that has a coil balance on either side. Both of the springs have broken, leaving a short section up by the support. The window is obviously now very heavy and won't stay up, and has become a safety concern because it is the bedroom window of our special needs son.

Attached are photos of the shoe installed and removed. I do not see any stamp on the spring, nor anything on the shoe that indicates what replacement spring I would need. The window sash weighs 19.6 lbs.

I would be open to ordering either two replacement coil springs, or replacement support/shoe as well... though I'd prefer to just replace the coil springs since I know the existing support/shoe will work. What would you recommend?

Thank you!

- Jeff

Casey · Accepted Answer

Hello,

Your pivot shoe looks like a match to our 15-180, which is designed to be used with the Series 190 coil springs. Based on your sash weight, I would recommend using two S190-540 coils on each side with the 15-181 double support and 15-182 bushings. Take a look and compare the specifications of our parts to yours. Thanks for posting!

Alternate image for 15-180