<Li> 1 horsepower is approximately 2544 Btu / h, or 1 2 (\ displaystyle 1 \ over (\ sqrt (2))) Btu / s </Li> <Ul> <Li> 1 ton of cooling, a common unit in North American refrigeration and air conditioning applications, is 12,000 Btu / h (3.52 kW). It is the rate of heat transfer needed to freeze 1 short ton (907 kg) of water into ice in 24 hours . </Li> <Li> In the US, the R - value that describes the performance of thermal insulation is typically quoted in ft ° F hr / Btu . For one square foot of the insulation, one BTU per hour of heat flows across the insulator for each degree of temperature difference across it . </Li> <Li> 1 therm is defined in the United States and European Union as 100,000 Btu--but the U.S. uses the Btu while the EU uses the Btu . The therm is used in natural gas pricing in the United Kingdom . </Li> <Li> 1 quad (short for quadrillion Btu) is 10 Btu, which is about 1 exajoule (7018105500000000000 ♠ 1.055 × 10 J). Quads are used in the United States for representing the annual energy consumption of large economies: for example, the U.S. economy used 99.75 quads in 2005 . One quad / year is about 33.43 gigawatts . </Li> </Ul> <Li> 1 ton of cooling, a common unit in North American refrigeration and air conditioning applications, is 12,000 Btu / h (3.52 kW). It is the rate of heat transfer needed to freeze 1 short ton (907 kg) of water into ice in 24 hours . </Li> <Li> In the US, the R - value that describes the performance of thermal insulation is typically quoted in ft ° F hr / Btu . For one square foot of the insulation, one BTU per hour of heat flows across the insulator for each degree of temperature difference across it . </Li>

How many british thermal units are in one ton of cooling