I am trying to get some information on double-hung vinyl replacement windows. What I am trying to learn about are the various mechanisms for raising and lowering the window sashes.
Is it true that the trend is toward getting away from having any mechanical balances in vinyl replacement windows? Instead, I have heard that the newer vinyl replacement now use an adjustable friction type system with no tubes or spirals, etc.
I am wondering about this because I keep running into vinyl windows in different properties where the "balances" (or whatever they are called) are broken, have missing parts, don't work correctly, etc. Yet, when I go to websites like