@IamMrsG
I can't recommend a window company LESS than that one. We replaced all the windows in our home in three stages. The back of the house got the Renewal by Anderson. The other two thirds of the house got Pella--good ones that have reallly held up.
Some of the Renewals are sash windows and some are casement (the type that swing out to the side).
First of all, the Renewal sash windows do NOT operate as advertised. It is hard to get most of them and impossible to get some of them to release their latches so that they will tilt inward for cleaning. This means some must be cleaned from the outside, which means removing the screen from the inside---I know that's hard to understand from my description, but believe me, it's just difficult and annoying, whereas both the sash and casement windows by Pella have been a dream to own and maintain.
The company sent a fellow out to supposedly take care of that tilting problem. He put in new clips but they did not operate any better than the ones they replaced.
Second bad thing about them: At exactly three months after the warranty expired on the Renewal windows, I opened one of the casements and all the weatherstripping crumbled into pieces. It was completely dried up, and after opening the window and losing the weatherstripping, the window now leaks. I called Renewal, they said the warranty had expired and they wanted several hundred dollars to replace the weatherstripping.
I have 17 Pella casement windows much older than the Renewals, and their weatherstripping is still flexible and intact. Not only that, but they are much better-looking and more upscale. . Our newest windows are also Pellas and are on the front of the house.
The reason I had some windows done by Renewal by Anderson in vinyl (or whatever they call their trademarked material ) was their ease of installation, which did not require major construction and was done in one day. I was unpleasantly surprised at how much smaller my window views became once those were installed, because the frames surrounding the glass are so wide. The window frames do not look extraordinarily wide from the outside of the house, but inside, I lost quite a bit of view.
The Pellas are wood and have thinner frames. To install them, workers had to rip out and replace all molding and the sill around each one, then I had to hire a painter to paint the new windows and surrounding molding, which of course also led to repainting almost the entire rooms.
I suppose you already know that windows from Renewal are not the same as the nice-quality windows normally associated with the Anderson Window name. Anderson bought the Renewal company some years ago to get its foot into the replacement end of the market.
Good luck. Getting new windows is a major improvement that we continue to reap benefits from every day, even from the Renewals in spite of their faults. You will definitely notice a nice difference , even if you decide the Renewal company is the way to go, It's possible their windows have been improved, but it will pay to shop around.