If anyone here is looking to replace windows and doors, I know the best place where you will get the best service. My sister is in the middle of renovation. She is replacing all the windows and doors of the entire house. They have been saving up for a while now. The house she lives in was inherited by her from our parents. So, the windows old and neede replacement.
She searched online but came to know about the service she hired from one of her colleagues. She changed all the windows to energy efficient windows. She wasn't really planning for energy efficient but ended up on those after reading some article online. the article explained why it is important to change to energy efficient windows. Also about the different energy star performance markers.
So, if anyone is thinking of changing then do think of energy efficient windows.