How To Choose The Best Air Conditioner



You may have heard people complaining about how much electric energy are their air conditioners consuming. Ever wondered why does this happen? In most of the cases, it is because the air conditioner isn’t the proper one for that room, and therefore, it is either overloaded.

So, how to choose the best air conditioner?

As the users of air conditioning systems may be aware, the capacity of these machines is measured in BTUs, or more likely, British Thermal Units and, in order to choose the most suitable one for a room/hall, people should respect a few principles.

First of all, they should know exactly the sizes of the hall/room, and that’s because there are multiple air conditioners. Some of them have a small capacity – for small rooms, most likely, a capacity that can go up to just 3500-5000 BTU – while some of them have a big capacity. Though, the last ones are mostly used in industrial purposes and are only for hypermarkets, deposits and halls.

As well, people should also know how many people will be living or passing by through that room, how many of the walls have windows and what is the usual temperature in a sunny day, when the room/hall is at its peek of insulation. This is because, usually, if the room meet different characteristics than the regular ones, the air conditioners should have a little higher capacity.

Therefore, before buying an air conditioner it is important to find out what is the minimum BTU that we are in need of. In normal conditions, for a room, it should be enough somewhere near 5000 BTU. But even more important, is the EER coefficient.

What’s EER? It’s the abbreviation for Energy Efficiency Ratio and basically, it measures the efficiency of the tower. For the usual household air conditioners, the perfect EER should be near 11. If it’s lower, then these machines shouldn’t be bought even if they may be cheaper. Though, they will require a lot of electric energy for functioning and the results won’t be astonishing.

Of course, the larger air conditioners should have an EER of 13, but in reality, this coefficient is way beyond this number. Though, an 13 EER is commonly accepted to be suitable for most of the large spaces. Though, for one room, or maybe too, a 11 EER with 5000 BTU would be more than enough.


Published by in How To, Tips, and Advice, on September 16th, 2010

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