One good reason the have properly sized ac system is humidity control. The result of this is that the moisture condensing on the evaporator reduces the moisture in the air. This process can not happen with an oversized ac, the run cycle on them are too short for this to happen.
Many people have trouble purchasing an air conditioning. Many times we have a habit of just focusing on the brand names of the air conditioner. There are many other factors to look out for when shopping around for an air conditioning unit so be sure to do some research and not be afraid to ask questions.
Be sure to pay the extra money and get the air conditioner installed properly, because that is the main thing. Sure there are other aspects, but not everyone has the budget for the air conditioner with better features.
If your ac turns on and off for 4 or 5 times in an hour instead of the normal 2 or3. There are many other factors to look out for when shopping around for an air conditioning unit so be sure to do some research and not be afraid to ask questions. Read this post here to know more info on energy saving air conditioner.
You should focus more on the size and installation of your air conditioner, rather then a high end air conditioning. If it is not installed properly you can face more problems later on because the big factor is the installation.