Tight double hung windows, how can I loosen balance?

A handy person from New York says:
Hello, how can I losen my vinly double hung windows? They have spiral balance. also some of them don't stay up. how can i fix that?

What can I do?

Thank You!
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Tom from SWISCO responded:
Thanks for posting! Take a look at our tutorial video on how to replace a tilt-window spiral balance. This shows the best method for relieving tension on a spiral balance. It also shows the best method of tightening them, which will help with those pesky windows that won't stay up!
How to replace a tilt window spiral balance.
How to replace a tilt window spiral balance.
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 >
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