In certain climates, the hot months of summer can be impossible to bear unless you have air conditioning. Window ACs are a lot less costly than central cooling systems and they also tend to use far less energy.
Depending upon your home size and the amount of insulation you have, one window AC is usually going to be sufficient for cooling one or two rooms, but some larger units are capable of cooling two and three bedroom apartments.
With multiple cooling units in just one home, each household member can keep his or her own room at a comfortable temperature. Installing a unit can take as few as ten minutes or as many as forty.
Window ACs are available in a variety of sizes and it is essential to choose one that is well-suited to the size of your space and to your needs. You should start by considering the size of the space. Using an Energy Star chart or a climate control calculator will allow you to select a cooling appliance in the right size. For the typical room measuring 150 sq ft to 250 sq ft, you will need a 6000 BTU unit.
If rooms flow directly into one another in your home and have open doorways or even archways, you will have to factor the square footage of the adjoining room into your calculations. In addition to the total room size, you also have to consider the room climate when choosing an AC model.