While we can’t give a certain answer to how long they’ll last, the longevity of your doors and windows will depend a lot on your location, the weather, the material, and how much maintenance you do on them.
Most companies will tell you that they last around 20 years. However, the best range is from 10 to 35 years. Also, the windows may stay beautiful while losing their ability to effectively insulate and protect your home. This happens as the gas slowly escapes from between the panes over the years.