Seriously, don’t rush into making the decision of installing replacement windows without reading this first. The advice given may help to you to understand that it is actually possible to install the windows yourself; of course you would have to be confident about being able to carry out the work but if you can it is really not as difficult as it may seem. One of the first things to consider is the potential cost saving versus having them installed professionally, to be fair this is normally quite large as most of the cost seems to be labor rather than the materials used. Once that is worked out it is important to research the exact method of how to carry out the installation, if possible speak to family members, friends or work colleagues to check if any have done their own installation. You never know the job of installing replacement windows might actually be easier than you first thought.