Question for Non-tilt window spiral spring

A home owner from Christiansburg VA says:
November 2, 2022
Dear SWISCO Experts,

Can I ask your help for identifying the window spring? I have non-tilt windows and I think I need to replace the spiral window springs. I have multiple windows that does not stay up.

The length is 29 inch, upper side diameter is 3/8 but the lower side of the pole has some metal wrap that makes diameter slightly thicker (29/64). I'm not sure that's important or not, so I just added photo.

And I also added photo for the window bracket area.

Thank you so much for your help!
Thumbnail of the uploaded file named pivot shoes_brackets.jpg
Thumbnail of the uploaded file named Length 29.jpg
Thumbnail of the uploaded file named Lower Side.jpg
Thumbnail of the uploaded file named Upper side.jpg
Thumbnail of the uploaded file named Blue Tip.jpg
A home owner from Christiansburg VA says:
November 2, 2022
I'm sorry I think I misunderstand the tilt vs non-tilt window.
My window doesn't tilt for use but tilt out to remove.
Does this mean my window is tilt window?

Thank you!
Profile picture of Paul
Paul from SWISCO responded:
November 4, 2022

Hello,

You have a tilt window, meaning that it tilts out for cleaning as you mentioned. Your balance spring had a plastic cover at one time that probably deteriorated over the years. You can use our S600-29 tilt balance with a blue tip option. Take a look and review the product specifications, as well as the videos we've related to assist you. Thanks for posting. 
A home owner from Christiansburg VA says:
November 4, 2022
Thank you so much for your answer!
By the way, upper part of my current balance spring diameter is 3/8 and your recommended model is 5/8.
Is it ok to replace mine with 5/8?

Thanks!
Profile picture of Paul
Paul from SWISCO responded:
November 4, 2022

The top is the inner portion of the balance tube, which the outer spring appears to have unwound from. As I mentioned, these old-style balances usually have a plastic cover that can break over time. You could check other similar windows in the house that may have intact covers to confirm the diameter. 

With that being said, it would make sense that the cover would have been 5/8" since the inner portion of the balance measures 3/8". 
A home owner from Christiansburg VA says:
November 4, 2022
You are right! The spiral balance has a white plastic cover and the diameter is close to 5/8.

Thank you so much for your help and have a nice weekend!
Profile picture of Paul
Paul from SWISCO responded:
November 7, 2022

We are happy to help! Please let us know if you need anything else. 
Spiral Balance Charging Tool for Tilt Windows
Spiral Balance Charging Tool for Tilt Windows
75-006
$9.97
Pivot Shoe, 1/2" Thick
Pivot Shoe, 1/2" Thick
15-046
$2.15
29" Series 600 Spiral Tilt Window Balance
29" Series 600 Spiral Tilt Window Balance
S600-29
$9.35
How to replace a tilt window spiral balance.
How to replace a tilt window spiral balance.
VIDEO
WATCH >
How to Remove a Pivot Shoe (Cutout Method)
How to Remove a Pivot Shoe (Cutout Method)
VIDEO
WATCH >
Swisco's 15-046 Pivot Lock Shoe
Swisco's 15-046 Pivot Lock Shoe
VIDEO
WATCH >
How to remove window pivot shoes
How to remove window pivot shoes
VIDEO
WATCH >
Anatomy of a tilt window
Anatomy of a tilt window
VIDEO
WATCH >
How to Identify a Replacement Spiral Balance
How to Identify a Replacement Spiral Balance
VIDEO
WATCH >
How to adjust a spiral balance on a tilt window
How to adjust a spiral balance on a tilt window
GUIDE
READ >
How to choose the proper spiral balance tip color
How to choose the proper spiral balance tip color
GUIDE
READ >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.