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You can either go for a 1 ton AC or a 1.5 ton AC depending upon the amount of light that enters the room, area and direction of windows, the floor on which your room is situated, number of people occupying the room and the number of lights.
Air conditioner equipment power in the U.S. is often described in terms of tons of refrigeration. A ton of refrigeration is approximately equal to the cooling power of one short ton (2000 pounds or 907 kilograms) of ice melting in a 24-hour period. The value is defined as 12,000 BTU per hour, or 3517 watts.Residential central air systems are usually from 1 to 5 tons (3 to 20 kilowatts (kW)) in capacity.ir conditioner equipment power in the U.S. is often described in terms of tons of refrigeration. A ton of refrigeration is approximately equal to the cooling power of one short ton (2000 pounds or 907 kilograms) of ice melting in a 24-hour period. The value is defined as 12,000 BTU per hour, or 3517 watts.