With the onset of warm weather, we start looking up for various ways to keep ourselves and our surroundings cool. One of the most common and efficient methods is air conditioning. There are various kinds of air conditioners available like room air conditioner, central conditioner and portable air conditioners having their own purposes. But if you looking for an air conditioner to place it in your room and other small places then it has to be window air conditioners. They are a kind of room air conditioners which are designed to fit in a window without taking much space. Their working is same as that of any other room conditioners. Window air conditioners are designed for people who can't afford central air conditioning or have room specific air conditioning needs. And other reason for choosing window air conditioners over central air conditioners is that the later ones are very expensive and require a lot of maintenance.

Window air conditioners have two coils, hot coil and chilled coil fitted with two fans. These fans blow air over the coils which suck the humidity and heat present in the room and throw it out in the outside area. This process keeps the air in the room cool, clear and free of humidity. The cooling power of an air conditioner is calculated in BTUs that stands for British Thermal Units. The BTUs of an air conditioner depends on its size which is an important factor in deciding an air conditioner for a room. A normal window air conditioner won't do any good to a large room so choose an air conditioner according to the room size.

Another feature of an air conditioner which depends on the room size is its tonnage and there are various denominations available like 0.60, 0.75, 1, 1.5 and 2 tons. As the tonnage increases, the price and power of the air conditioners increases. So, these two attributes should be kept in mind while buying a window air conditioner. Another major concern while purchasing a window air conditioner is the electricity bill which adds up to huge amount. While buying a window unit always look for models having higher energy efficiency. Models having higher EER are more efficient as they will decrease you electricity bill. It is measured in terms of Energy Efficiency Rating which needs to be displayed on all models sold in US market. A model having an EER of 10 would use around 20% less energy then the model having EER of 8.

It is also advisable to tell your dealer some other details like your budget, room size, and thickness of the wall, size and number of windows and any other electrical appliances in the room which will help him to give you a good deal at affordable price. Window air conditioners nowadays come with additional features like quiet operation function, timers, dehumidification, air filters, remote control and thermostat sensitivity. Be wise enough and do proper market research before buying a window air conditioner as there are many brands available each promising to give you the best at the most competitive price.