When summer comes, and the air becomes not only hot outside, but also stuffy indoors, the desire to cool off may become so persistent that you are almost ready to climb into the refrigerator. In this case, however, an air conditioner is a better choice—then you can cool the entire house. There are many different air conditioning systems available, but how do you choose the one that suits your needs and budget? Will a major overhaul always be required when installing a particular system?
