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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.
A ton of ice. The cooling capacity of air conditioners is usually measured in tons. One ton equals 12,000 BTUs (British Thermal Units) per hour. The term one ton comes from the amount of heat required to melt a block of ice that weighs one ton.e don't want to increase the air speed beyond 500 feet per minute (about 5 miles per hour) or we'll get excessive noise and uncomfortable drafts in the home. Air conditioning systems typically move 400 to 450 cubic feet of air per minute per ton through a system.