We have to accept one fact - electricity is expensive. And it is not only expensive for you but also for mother earth as her resources is being used to produce the electricity. With a central air conditioning system you actually end up wasting more energy than you use. Especially for small families where only one or two rooms are occupied at a time to have the entire house air conditioned is an unnecessary waste of energy.

With mini split air conditioners you can actually save a lot of the energy and at the same time you can enjoy the effects of air condition. With split air conditioners you can air condition the room you want to while the other rooms maintain normal temperature. The split air conditioners also come with in built thermostat. So it knows when to switch off and when to switch on again.

Apart from the savings on power you can also save on the installation cost. Installing a central air conditioning system would cost you a serious sum of money. You need to install ducts all over the house and that means a lot of building work. Not only it means more expenses but also a lot of hassles as you wouldn't be able to use your house normally while the entire structure for the central air conditioners is put in place. With a split air conditioner there are no such problems. You just bring it form the store and it is ready to be installed. Therefore it is not only hassle free, it also saves you a lot of money.

With window air conditioners, the main problem is it is fixed. So we cannot move it around. For the window air conditioners also there is also the issue of installing it. You cannot do it by yourself and would need a professional's help. So that would mean more expenditure and extra time and hassle.

Overall it is evident that split air conditioners are much cheaper than either the central air conditioning system or the window air conditioner. You have to invest less initially; you would not need to bear any installation cost; and you will save on your electricity bills. So one can't see much reason as to not to opt for a split air conditioner. Even if he has a lot of money to spend and gets himself a central air conditioning system, he will need the split ACs for the hot spots.