To determine the number of watts consumed by a 1.5-ton air conditioning (AC) unit in one hour, we need to know the energy efficiency ratio (EER) of the AC. The EER represents the cooling capacity of the AC unit (in BTUs) divided by the power input (in watts).
Assuming a typical EER of 10, we can calculate the power consumption as follows:
Convert the tonnage to BTUs. One ton is equivalent to 12,000 BTUs, so a 1.5-ton AC is 1.5 x 12,000 = 18,000 BTUs.
Divide the BTUs by the EER to obtain the power input in watts. In this case, 18,000 BTUs / 10 = 1,800 watts.
Therefore, a 1.5-ton AC unit with an EER of 10 would consume approximately 1,800 watts of electricity in one hour of operation.