It is better to call a professional when setting up a cooling system. The professional knows how to do it the right way. The largest issue is that a cooling method has a certain amount of refrigerant that goes in it on the initial upgrade. If the amount is wrong on the initial set up, the a/c can’t reuse. If too little of refrigerant, the parts on the cooling method grind together & wear out. If too much refrigerant, the liquid overflows & damages the inner workings. The air conditioning method with unusual refrigerant will have more frequent AC repairs & entirely high-priced repairs. Second, the cooling method will have about half the lifespan that it should have. All of this happens when that initial set up is wrong. Homeowners don’t assume these tricks of the trade. The average person will not pay attention or mess up the levels hurrying the cooling set up. It is better to call a professional AC specialist. This way you assume the AC method is set up the usual way, and you actually save currency using a professional. The cooling method will run more efficiently than when a homeowner will set it up. The cooling upgrade does not cost too much in the end. You additionally spend so much currency on the AC plan. Why would you skimp out on the actual set up & possibly damage it? It is not worth saving a few bucks doing this. It is better to have that peace of mind knowing the cooling device is working at peak efficiency.