One of the first things you need to analyze, before purchasing the equipment, is the details of the environment where it will operate. Therefore, it is necessary to know in advance the size of the environment where the device will be installed.
Still in this regard, it is important to keep in mind how many people and electronics occupy the environment, such as exposure to the sun and the number of windows to determine the ideal power in BTUs.
To make this calculation easily, just access the BTU Calculator from some manufacturers!
Also note if there are curtains or furniture covering the air outlet in the room where the air conditioner will be installed. This can compromise your device's performance, leading to higher energy consumption, as it will not be able to cool or heat the room as it should.