Question: why ac is in ton?
Answer: A ton is the cooling capacity of an air conditioning system. One ton is equal to the amount of heat required (288,000 Btu) to melt one ton of ice in a 24-hour period. A one-ton air conditioner is rated at 12,000 Btu per hour (288,000/24). ... Typical residential central heating systems provide up to 5-tons of cooling.