Thank you for at least one response to my question. We are waiting for more advice.
On such matters, it is better to consult experts rather than listen to friends. If you listen to him and there are really good windows, you just throw your money away. And if you buy, for example, only glazing and the frame itself remains then you can also get the money, as the frame also plays a very important role in the integrity of the window unit. I can advise you good professionals https://buildmart.ca/. They will tell you to buy a new or leave as is. But I tell you one thing if your windows are over 10-15 years old, of course they need to be replaced because there are already more technological solutions in this area. There are double-glazed windows with argon which will save you a lot of money on heating in the winter at the expense of small heat loss. And in the summer will reflect a lot of sunlight so as not to heat the room.
We bought a new house, but a friend advised us to change the windows and doors. We like the door, we are not going to change it. But the windows seem to be okay. How to determine whether they are good or not, and where can I order a window? But we have a lot of money left after buying a house, so it's better to do with the old. Advise me something. We will be very grateful. Thank you very much.