Looking to repair double-hung windows that won't stay up

Question

I am in this house, built in 1989, where most of the windows do not stay open. I worked out how to tilt the sashes out (press in the vinyl and tug on the corner). The one I removed has both the lower and upper sashes stamped on the side with "NAMCO 224 278157 36x24 WHITE LOW-F". The balancers in the jamb liners are engraved with "24XHD B.S.I.".

IN the photos above, I removed both sashes, and found the upper one still functions, while the lower sash's balances were broken on both sides. This is more or less the case for all of my windows.

What I'm wondering is: can I get replacements for those balancers, and perhaps even seeking replacement for the jamb liners? I'm not sure how much I will need to replace, but I am looking at about 14 windows of the same style (not all the same size). I'm sure you'll need more information, and thanks!

Emily · Accepted Answer

Hi there, and thank you so much for waiting during our busy holiday season.

In your one photo, it looks like your balance uses a knife lock shoe which leads me to believe you have the S751-25 ribbed channel balance with the 24HD stamp option. This comes attached with the 15-014 by default so I recommend removing your old hardware from the window to confirm the specifications match up.

I'm afraid we don't sell jamb liners but if this is a wood window, a local millwork should be able to help.