How Much Does a 1.5 Ton Air Conditioner Cost Per Month?

When purchasing and using a 1.5 ton air conditioner, it is crucial to understand the monthly cost you will incur due to its energy consumption. The cost varies based on several factors, including room size, outside temperature, and the efficiency rating of the AC. This article aims to provide a detailed breakdown of these factors and help you estimate the cost accurately.

Factors Influencing the Cost

The cost of operating a 1.5 ton air conditioner monthly depends on multiple variables. Firstly, the room size and the set temperature inside play a significant role. Once the desired indoor temperature is achieved, the compressor switches off, and the AC does not run continuously, thus saving energy. Additionally, the efficiency rating of the AC as indicated by its Energy Efficiency Ratio (EER) influences the energy consumption.

Energy Consumption Calculation

To estimate the monthly cost of running a 1.5 ton AC, we can use the following formula:

For 1 hour run units consumed is 3.5 x tonnage of AC ÷ EER units.

Around 1.2-1.5 units per hour is a general estimate.

Example Calculation for a 1.5 Ton AC

Let's assume your 1.5 ton AC is rated for a 2 kW single-phase supply at 230 volts in India. If the AC is run for 8 hours a day, the power consumption is:

2 kW × 8 hours 16 kWh or 16 units per day.

For a month of 30 days, the total power consumption will be:

16 units/day × 30 days 480 units for a month.

Assuming an electricity board rate of 5 Rupees per unit, the total monthly cost would be:

480 units × 5 Rupees/unit 2400 Rupees.

Note: This does not include additional service charges or electricity duties.

Practical Estimation from Actual Usage

Based on real-world usage, the split AC 1.5 Ton with an EER of 4.57, set at 27℃, consumes an average of 60 units per month. The billing might vary depending on the distribution company's tariff slab, which could range from Rs. 500 to Rs. 600.

Three-Star AC Estimation

For a three-star AC, the power consumption would be around 2 kW per hour. Assuming the temperature is kept between 24℃ to 27℃ and the room size is 150 to 200 square feet, the energy consumption would be around 4 units per day. If the cost per unit is 5 Rupees, the daily cost would be:

4 units × 5 Rupees/unit 20 Rupees.

For 8 hours of usage per day, the cost per day is 20 Rupees.

Conclusion

The cost of running a 1.5 ton AC monthly varies depending on several factors. By understanding the energy efficiency rating and practical usage patterns, you can better estimate the monthly cost. Always refer to your AC's nameplate for the EER and other specifications to make an accurate calculation.