Our windows in our building are heavy double hung type. My wife wants to open them to let in fresh air. Does a tool or device exist that would assist her in this goal. We don't want to install new windows nor pay high constructions to fix them. We both are nearly 80.
FreqFlyer provided the URL so you can refer back to it to see our responses in that first post.
I did take the time to do some research for you; I hope it was helpful or that if you haven't checked it out, you'll do so. There was one device that I thought might be workable.
Could be that the tool or device she needs to open the windows of her choice is you. ;)
https://www.agingcare.com/questions/devices-to-lift-and-open-heavy-windows-182620.htm