There are many types of portable air conditioning units so securing one will be different for each. Most portable units are designed to sit in a window and will come with a mount.
Most portable air conditioners come with instructions that make it simple for the average person to install them properly. However, if your skills are not extensive, a local air conditioning...
You can buy air conditioning unit at places like home depot, walmart. But they can get expensive so I would suggest shopping around for the best price.
Modern air conditioning emerged from advances inchemistry during the 19th century, and the first large-scale electrical air conditioning was invented and used in 1902 by Willis Haviland Carrier..