It is better to call a professional when setting up a cooling system. The professional knows how to do it the right way. The biggest issue is that a cooling system has a certain amount of refrigerant that goes in it on the initial installation. If the amount is wrong on the initial set up, the air conditioner can’t recover. If too little of refrigerant, the parts on the cooling system grind together and wear out. If too much refrigerant, the liquid overflows and damages the inner workings. The air conditioning system with improper refrigerant will have more frequent AC repairs and really expensive repairs. Second, the cooling system will have about half the lifespan that it should have. All of this happens when that initial set up is wrong. Homeowners don’t know 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 technician. This way you know the AC system is set up the correct way. You actually save money using a professional. The cooling system will run more efficiently than when a homeowner will set it up. The cooling installation does not cost too much in the end. You additionally spend so much money on the AC plan. Why would you skimp out on the actual set up and 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.