In the winter, the process is reversed, and the geothermal AC unit pulls heat from the ground and transfers it to your home. A portable unit can be an excellent addition to your house, especially if it is hot where you live. These units aren't as versatile as a portable air conditioner that comes with a separate duct. They cool and dehumidify. These air conditioners allow you to move them easily from one area to another in the house. By investing in an air-cleaning unit, you will be able to make a change for your own health. If you have pre-paid for an all-inclusive bar package and half your guests leave early in most cases, this money will be wasted. It is used to calculate the amount moisture in an air at a particular temperature. The PTACs can also be used in areas that are hard to cool like sunrooms, lofts, attics, and sunrooms. This product has been made with advanced features, which is why it's so beneficial. This portable air conditioner is ENERGY STAR-certified and equipped with 14,000 BTUs. Basically, these numbers indicate how large of a space the portable air conditioner can cool. The top picks are determined by consumer reviews.