Coil balance replacement for Simonton tilt window

Home Owner from Bolingbrook, IL
Sep 10, 2023 12:22 pm
I am in need of some coil replacement for my Simonton windows. They are 20 years old. I am not sure what type or size to purchase.
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Bob from SWISCO
Sep 10, 2023 9:08 pm

Thanks for posting. This Simonton shoe resembles the Certainteed 15-192, which uses Series 170 and Series 171 Coil Balances. However, we've found the Certainteed parts have a lot of trouble fitting Simonton windows; the 'alignment nubs' on the face of the 15-192 have to be rubbed down for it to work, and even then it's no guarantee. 

Because of this problem, we've come up with an alternative solution. The 15-192, along with the Series 159 Coil Balances. We've tested this ourselves and it works, but we're still waiting for confirmation from customers who give it a shot. If you choose to do so, the video below runs you through the entire process. Take a look. 

Home Owner from Bolingbrook, IL
Sep 11, 2023 6:52 pm
Thank you for the information, what would you say is the spring weight that I should use? It looks like mine says 10J. According to the video they said to replace the pivot bars. What size do you recommend? Any other accessories that I would need to order?
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Bob from SWISCO
Sep 12, 2023 11:45 am

The best spring weight will depend on which of the two options I mentioned you're going to go with. If you want to use the Certainteed hardware, then that complicates matters; neither the Series 170 nor the Series 171 have a 10 pound option. Both cap out at 9 pounds. 

With that in mind you will need two double up on springs and use two 5 pound options to make up the difference. Specifically a S170-405 on the bottom and an S171-405 right on top of it. That also means you will need a second cover and bushing for the extra spring; see our 15-156 and 15-157, respectively.

If you're going with the alternative solution suggested in the video, then it's still a little complicated. Rather than full pound increments, these are only made in half pound increments; in other words, instead of a 10 pound spring, there's only 10.5. The 10.5 pounder might work but the springs may be a little too strong. You may want to get your sash weight just to be sure. It should be around 20 pounds; as long as it is then that should work fine.

As for the pivot bars, the video I linked to above suggested the 26-083 to use with the 15-259. It also lists all parts you'd need for this project.

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