Compared with the old units, build new casement air conditioner will save money. You will save on electricity bills compared with the old units. Also, compared with similar units (mostly from the window), they are very quiet and it will cool your room quickly. Just to mention that if you want to install it yourself, you will need half an hour for up to three hours to install, which is not much.
Casement air conditioner is easy to install using some basic tools and a little creativity. They are less expensive than central air conditioning to run and buy. Also, they are a good solution for the tenants because you can take them if you need to move. They do not take up much space, and it does not take up space on the ground such as the air conditioning unit phones. It can cool an area of up to 1,000 square feet.
Just to mention, although casement air conditioner is possible to cool a large area up to 1,000 square feet, it does not mean they will do so. It all depends on your home. If you have installed thermal bad or if you have separate rooms and some corridors, it is best to buy a central air conditioning.