Coil replacement

Quick Learner from West Covina

Aug 4, 2025 1:19 pm

The coil on the window sash broke into two pieces, I don't know if it's a 2 pound coil or 5 pound coil so I don't know what replacement I need

2 user uploaded images

2 Replies

Jasmine from SWISCO

Aug 5, 2025 10:41 am

Thanks for your post! The nylon piece in the second photo is the 15-102 Double Side Load Carrier. These use the Series 145 Coil Balance Springs.

Since you are not certain of whether the coils are marked with a 2 or a 5, you'll need to obtain the exact weight of the window sash. Take a look at the video tutorial below for a detailed explanation.