Certainteed Coil Balance Replacement

Thanks for posting. This looks like our 15-180 Pivot Shoe. Just go over the dimensions listed on the product page to make sure it matches your old shoe. This pivot shoe is compatible with our Series 190 Coil Springs. Look for stamps on the coil springs to confirm what spring weights you need. If your coil springs are missing stamp numbers, weigh your window sash. Let us know that precise weight, as well as how many coil springs are on each side of your window sash, and we'll work out the rest for you. 

Hi Carl, 

Yes, both coils should be nestled inside the detent clip. Personally, I think it would be wise to replace both pairs of springs. The number on the pivot shoe unfortunately is not necessarily related to the spring weight. If there's no stamps on the coil springs, the best thing to do is to weigh your window sash. Divide that precise weight in half, and that will tell you the total amount of spring weight you need on each side of the sash. Let us know if you need help with this.

Ah, thanks for clarifying. If the lower coil has a '7' stamped on it, then it could be replaced with our S190-740. So you know that you will need (2) of the S190-740, once for each side of your sash. I'm afraid there's no guarantee that this number also corresponds to the coil stacked on top. The only way to know what remaining spring weight you need is to weigh your window sash. There's really no way around this part--it's pretty common for coil springs to not be stamped. Divide that precise weight in half, then subtract 7 lbs from that halved number. Your answer should correspond to one of the Series 190 spring weights. If you need help with this, give us the sash weight and we'll be happy to do this for you.

Thanks for getting back to me. Well, if your sash weighs 13.8 lbs, you just need (2) of the S190-740, one on each side of the sash. This will equal a total support for 14 lbs--the slight difference won't matter.

No, if your sash weighs 13.8 lbs, I'm saying you only need one coil spring on each side of the sash, and both of these would be the S190-740 7 lb Coil Springs. I am guessing your old coil springs were for lighter spring weights (maybe 3 lbs and 4 lbs on each side, for instance), which is why you had two per side rather than just one. It's not so uncommon for someone to end up with a different number of coil springs when replacing their Coil Balance system; all that matters is matching the total amount of needed weight support.

I am saying get rid of them. You will have just one coil spring on each side of the sash now, rather than two. The reason for this is that the S190-740 supports 7 lbs of weight individually, so if you have one on each side of the sash, that equals 14 lbs of support, which is close enough for your 13.8 lb window sash. If that's the exact weight of your sash, you should be just fine with this change. If you need a new detent clips for just one spring, see our 15-186. 

My pleasure. Thanks for considering our business, it means a lot. Let us know if you need anything else!