A windowless ac unit that has 5,000-6,000 BTU can cool down a 150-200 square foot room. The units come with as much as 25,000 BTU, which are powerful enough to cool an area of 1,700 square feet, but the higher the BTU, the more energy it will use.
It is in your best interest to buy a model that has energy saving features. Also, another advantage of owning a windowless ac unit is that they can sometimes double as a heater. This is useful during the winter months.
For example, a Frigidaire FRA093PT1 9,000 BTU Portable Air Conditioner with Remote Control comes with features such as a 24 hour timer, an adjustable fan speed, a remote control, as well as an energy saver feature.
Haier also makes stylish units, like the Haier CPN10XCJ 10000-BTU Portable Air Conditioner. These units typically include a digital timer, temp setting, remote control and even dehumidification feature.
Windowless units can usually be installed by you, as long as you possess some basic do-it-yourself skills. You will also need some basic tools for the job, but pro installations are relatively low when you compare ac units that are able to be mounted to the wall.
You should assess your needs before you choose an ac unit, and you may want to look at different reviews of the unit you are interested in buying. This will help you find out what the pros and cons are of that unit. If you are looking for a good windowless air conditioner, Home Depot is a good place to visit.