Do you need an AC installation? Your best bet is to call a professional. This is the one and only way to ensure that your AC is being installed properly and correctly. However, you may be enticed to perform the AC installation yourself.
While this is a slightly risky move, it is possible. You just need to be very careful.
Use your best judgment when making the decision to install your own AC. Ask yourself if this is truly something you think you can achieve on your own. Do you have prior experience with home improvement projects of this nature? Do you have a decent understanding of how AC units work? If the answer to either of these questions is no, do not proceed with this DIY project! Instead, call a professional to handle this matter for you.
However, if you answered yes to either of the above questions, you can move forward in the AC installation process. Do lots of research and preparation beforehand. Videos like this one are a great place to start!