Why AC appraised in Tons, Not in kW? AC (Air-conditions and Refrigeration are constantly appraised in Tons. Aeration and cooling systems are constantly evaluated in Tons capacityinstead of kW since Air conditioners are planned on the premise of amount of warmth expulsion from room, corridor or particular region. Amount of warmth is termed in Tons implies if a ventilation system can uproot 1000 kilocalories of warmth or 4120 kilojoules or 12000 BTU of warmth in an hour that AC evaluated as 1 Ton of AC since 1000 Kilocalories or 4120 kilojoules or 12000 BTU equivalent to one Ton of warmth. Additionally, this is the same case for cooler and icebox i.e. refrigeration framework. Great to know: BTU = British warm unit. An estimation of warmth, particularly, the measure of warmth expected to raise the temperature of a pound of water by 1°F. Meaning of Ton A Ton of refrigeration (RT) is roughly equal to 12,000 BTU/h or 3,516.8528 W or 4.7142Hp. A Ton of refrigeration (RT) is a ...