One of the things to ask from Vinyl Window Replacement Company Bloomington MN is that it has had a good amount of experience in the past mounting, changing, or maintaining windows. There are lots of different types of glass, frames, hinges and other considerations that need to be taken into account when looking into this type of job. Especially if the windows that need to be replaced are at a height, it is also dangerous to attempt to do so if you lack the proper equipment, or if you don't have the right expertise.