What are BTUs and KWs?
BTU’s and KW’s are different units of measure of heat (or cooling) energy. Here in the UK we always used to use British Thermal Units (BTU’s) and often you will find heating and cooling equipment performance measured this way. On the continent they use the Internationally recognised unit of Kilowatts (KW). There is a direct relationship between the two – 1KW is the equivalent of about 3400BTU. So a 9000BTU machine is a 2.6KW machine.