Nowadays, it is easy to confuse portable air conditioners with air coolers or evaporative coolers, devices of similar appearance that lower the air temperature by means of water vapor. Among their differences, energy consumption is lower, they do not require this air outlet to the outside, and their cooling capacity is less than that of air conditioning. They are a more affordable alternative to consider, as long as we are clear about their limitations. Let us get started! Factors to Consider While Buying Personal Air Conditioner Taking into account that it is about choosing a portable model and that as we anticipate in the title, we look for the smallest, the size will be something important: either because we want to move it or because we have little space. It is also interesting that some of them have wheels. Below are some factors to consider while choosing a personal air conditioner: Size The device's size must obviously be considered; after all, we want a portable device compact to make life more practical when traveling. We will list all equipment measurements to assist in the analysis and calculate the liters' volume as a basis for comparison. Auto evaporation Some of the bad fame of portable air conditioners came from the undesirable task of removing the water that was left in the reservoir, as we mentioned earlier. Fortunately, in current models, the best ones have auto-evaporation technology, which avoids manual removal as the device itself stores all the water generated during the use of the product and evaporates as needed. This will be a prerequisite in our list, that is, all models listed will have this technology! BTU If you have ever researched the best air conditioning, you may have come across the word BTU. BTU stands for British Thermal Unit, an English term for British Thermal Unit. It is a unit of energy, which measures the amount of energy needed to raise the temperature. BTU is a unit used in the United States and the United Kingdom that serves to determine the cooling power of various devices, such as our product in question: air conditioning. Apart from that, BTU is a unit that has no measure but is equivalent to some other units, such as 252.2 calories and 1,055.05585 joules. To melt a mass of ice, 143 BTUs are needed. The main benefits, compared to traditional air conditioners: Mobility : Certainly, this is the most desired point for those who choose the portable model. Have you ever imagined being able to use the device in every room in your house? While we have the convenience of the appliance, we can save money by having only one appliance that will supply the entire house.Easy Installation : You will not need to hire any professional for the service. Its use is simple and easy and does not require knowledge on the subject.No renovations in your home : As we mentioned earlier, this advantage of portable models without being one of the big differences. Anyone who has experienced work knows how traumatic it can become. The fact of not having to adapt the construction of the property to the device ends up weighing in the choice.Savings (R $) : The cost of installing models such as splits and windows are expensive and represent a good part of the device's value. In addition, the maintenance of portable air conditioning tends to be cheaper. Because it is a smaller, mobile device, you can take it to concert venues.Temporary use: In some cases the period of stay is predetermined, such as a vacation trip. Nothing better than a device that fits our needs and can be reused later. How to know the correct power of the portable air conditioner? Many people end up buying an air conditioner without understanding if the power will supply the necessary refrigeration in their environment and end up being disappointed with the unit, when in fact, it was a mistake of bad dimensioning. The account is a sum of factors. To start an average of 600 BTUs per square meter is required. If the environment receives direct sunlight, use 800 BTUs as needed. The second step is to add another 600 BTUs (or 800, if there is sunlight) per number of people in the space. Of course, this is relative as this number may vary, but it is important to keep that in mind.