Replacements for coil window balances

A home owner from Ohio says:
September 19, 2023
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
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A home owner from Ohio says:
September 19, 2023
one more photo
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Casey from SWISCO responded:
September 20, 2023

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
Alternate image for 15-180
Coil Balance Shoe
Coil Balance Shoe
15-180
$3.97
540 S190 Coil Balance Spring
540 S190 Coil Balance Spring
S190-540
$9.74
Double Support Detent Clip
Double Support Detent Clip
15-181
$6.17
Balance Bushing
Balance Bushing
15-182
$1.80
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