There are two main options when it comes to air conditioning units. You could get a single room unit, usually one that goes into the window, or you can get a central unit. Both have their pros and cons and either could be more suitable for your current needs. Before you choose one or the other, it's worth finding which would suit you the most.
How Long Will You Live In the Home?
Before you make a choice, you need to consider if you are planning on selling any time soon. If you are, a single room unit may be the better option. It is cheaper and quicker to install. That being said, it will also depend on how many room units you want to install.
Central air conditioners tend to cost more than a couple of units, but will offer savings in the future. If you plan to stay in your home for longer and want the whole home cooled, then this is the one to choose.
Do You Own Your Own Home?
This is another important question. If you don't, you will likely not be able to install a central unit. You'll need the individual ones, unless your landlord agrees to the installation; most won't. This is something to discuss with your landlord though, as a central system could be a major selling point when it comes to renting in the future.
How Many Units Will You Need?
This will affect the cost, so something to look into. If you need more than three units, you'll be better off getting a central system. It will cost the same or less than multiple single units. However, if you only want a unit for one particular room or two, then it could be cheaper and easier just opting for the single unit.
Do You Want Something That Looks Good?
If the cost isn't a problem, then you'll want to look at the aesthetic benefits. A central system, especially a ductless one, will look better in the home. This can be a selling point if you come to sell your home in the future. The air conditioning box can be hung on the ceiling or hidden in other parts of the home, while you reap the benefits everywhere.
Now it's up to you. Which type of unit would you prefer or do you think will work better in your home? Single units could be financially cheaper, but if you want the long term benefits the central systems may work out better. You can go to websites online to find out more about these options.