To calculate the AC Cost Per Hour:
\[ ACPH = PU \times UC \]
Where:
AC Cost Per Hour is the cost to run an air conditioner for one hour. It is calculated by multiplying the power usage in kilowatt-hours (kWh) by the unit cost of electricity ($/kWh).
Let's assume the following values:
Step 1: Multiply the power usage by the unit cost:
\[ ACPH = 2.5 \times 0.12 = 0.30 \text{ $/hr} \]