Typically, a 1.5-ton air conditioner consumes around 1.5 to 2 kilowatts (kW) per hour when running. The actual electricity consumption may vary based on factors such as the unit's energy efficiency rating, the ambient temperature, and usage patterns. For estimation, if the unit operates for eight hours a day, it could consume approximately 12 to 16 kWh daily. Over a month, this can add up to 360 to 480 kWh, depending on usage.