Window balance spring

Handy Person from the United States
I have a double hung window that no longer stays up/open when the lower part is lifted. It appears that this circular spring on both sides has snapped. I don't know whether just that spring can be replaced or whether the whole spring/plastic connector must be replaced. Any guidance on the correct parts / repair approach would be helpful.
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2 Replies
Jasmine
Jasmine from SWISCO
SWISCO
Expert

 Hello,

The coil assembly you have appears to be the Series 140 Quick-Tilt balance. This particular assembly is sold as one complete piece. That being said, since your housing is stamped with a 7, I believe you'll need the S140-07.

TO confirm that this is the correct replacement, look over the dimensions shown below.

Alternate image for S140-7
Alternate image for S140-7

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