How to select an airconditioner
Capacity: The capacity of the air conditioner should be considered depending on the floor size of the room for which the AC is required. A rough measure states that an area in range of 120 ~140 Sq. ft. area will need 1 ton, 150 ~180 Sq. ft. area will need 1.5 ton and 180 ~240 Sq. ft. area will need 2 ton cooling capacity air –conditioner.
Energy efficiency: Today, with rising mercury levels and increasing electricity tariffs, an energy efficient model of air conditioner is a must-buy. Air conditioners come with star rated energy efficiency ratings; also called EER, which has been standardised by the Bureau of Energy Efficiency (BEE). Therefore, any unit with more stars will consume lesser electricity than one with a lower star rating.
Split or window AC: Another deciding factor is whether you want a window AC or a split model. Though window units are cheaper and easy to install, split ACs are quieter, aesthetically more pleasing and provide better air distribution.
Product Price: Price is another important factor to consider as more features and higher star ratings account for a higher price tag. For every star rating increase there is an increase of around Rs2,500. An Inverter AC is usually 20% higher than a 5-Star rated Split AC. Air
Quality: Indoor air quality is very important while deploying ACs at home; hence AC with a good filter is extremely important to improve indoor air quality. A good filter not only ensures clean air but also enhances the cooling performance and energy efficiency of AC by preventing the choking of evaporator coil due to dust.
Maintenance & Cleaning: ACs are like cars, and they need regular servicing to remain in best condition and optimum performance. Once installed, there should be regular servicing, preferably quarterly. Cooling speed: The AC should have an adjustable thermostat (temperature setting) and at least two cooling speeds, and a minimum of two fan speeds as you may want to use variable speeds for different times of the day. An energy efficient setting will be a beneficial addition as it helps in saving energy while providing optimum cooling.
After sales services: After sales services and other add-on features like warranty would certainly be a plus for your purchase. Look for a service-orientedbrand that has the capabilities and good network to meet the servicing need of your product.
Other important features: Most air-conditioning units come with a dehumidification function, which reduces humidity in the air, for increased cooling and more comfort. Also it is important to check the noise levels of the model, which may range from 19 – 60 decibels. The sleep mode function in an AC is useful as it automatically adjusts the temperature during the night. Your unit should also have an auto restart facility to help restore the last setting after a power break.
Multipurpose: Nowadays, AC is not just used for cooling, but as a multi seasonal product that can also be used in winters for heating. These Hot & Cold Air Conditioners also save up to 35% more energy than heaters. ACs are also the best cooling devices for Humid weather. Special cooling functions are required for optimum cooling and maximum comfort during monsoons. So look for an AC with features which can control humidity and give more comfort in Monsoons.
Installation: Make sure that you get your air conditioners installed by an authorized dealer of the brand that you are buying. Don’t rely on a local vendor/guy to install it, they may charge less for the service but you don’t want problems such as leakage in copper pipe etc. which require renovation of ceiling/walls later on.
Exposure to Heat & Sunlight: If your room is closer to kitchen or the wall of your room is directly exposed to the sun, you’ll need an air conditioner with higher cooling capacity.
Room Size: The size/capacity of the AC should be as per the size of your room. If it is bigger it will not be able to provide proper dehumidification and the smaller one will cost you more in terms of energy consumption. Room ACs are available in capacity range of 0.75 to 2 tonne. Inverter AC with variable tonnage can be used for a wider range of room sizes.
Weather conditions: While choosing an AC, one should look for air conditioners that can work efficiently even in extreme weather conditions of Indian summers.
Usage: If your AC usage is 8 to 10Hrs a day for 3 to 4 months, it is recommended to buy at least 3Star rated AC. In case AC usage is extended 5 to 7 months, you should opt for 5-Star rated AC or an inverter AC.