Here are a few models that are well rated.
Willis Carrier is a name you must know. Why? Because he invented a device that has made life for countless humans a lot more comfortable. Mr. Carrier is the inventor of the air conditioner. That's right, he's like a god to many because without the air conditioner, the world would be full of a lot of sweaty, agitated people walking around and that could only result in an increase in punched by some random stranger.
Air conditioners have made it possible for humans to live in areas of the Earth which are quite hot. For example, Phoenix, Arizona can often have temperatures north of 110 degrees with entire summers being over 100 degrees each day. Without ACs, not many people would even think about living there.
There are 3 main types of ACs that people use. Central AC, window AC units, and portable AC units. Unless you already have central air conditioning in your house, it's quite expensive to install. For this reason, many people get a window AC which basically goes through your window. It needs to be outside because of how ACs work (sucking hot air out of your house and blowing cool air back in).
Installing a window AC isn't that difficult but many people prefer to not have to deal with installing one of these. This is why many prefer portable ACs. Some will come with a hose to blow the hot air outside. The hose will need to go through a window or some place where the air can go outside. The other advantage is that it tends to use less electricity.
Some people don't like having to deal with a hose so they get evaporative air cooler instead. These will save you on your electricity bill but won't cool your house down as well as a regular AC but it still works quite well. These are used by adding cold water to the unit. The machine takes the water and converts it into cool air. If you search for portable air conditioners without a hose, you won't be able to find anything since there isn't one but these evaporative coolers are close.
Whichever type of AC unit you use, one thing everyone wants when it comes to air conditioners, is to feel comfortable. Hot summer days and nights can really make life stickier than usual.
