Air Conditioner
Air Conditioner Running Cost Calculator
Estimate your AC running cost based on tonnage, star rating, and hours of use per day.
Enter appliance details
Pick a preset or enter wattage manually. Adjust rate to match your DISCOM.
Quick presets
Typical: 600–2500 W
Use 6–9 ₹/unit as a rough national average, or your DISCOM's top slab rate.
Money-saving tips
- Set thermostat to 24 °C — each degree lower raises consumption by ~6%.
- Service the AC twice a year; a clean filter can cut consumption by 5–15%.
- 5-star inverter ACs pay back the premium in ~2 summers vs 3-star fixed-speed.
Frequently Asked Questions
Answers to the most common electricity bill questions in India.
How much electricity does a 1.5 ton AC use per hour?
A 1.5 ton 3-star AC typically draws 1.5–1.7 units (kWh) per hour. A 5-star inverter draws 0.9–1.2 units/hour depending on ambient temperature and thermostat setting.
Does an inverter AC really save money?
Yes. Inverter ACs modulate compressor speed and avoid the high start-up current of fixed-speed units. In typical Indian summers, a 5-star inverter AC saves 20–35% vs a 3-star fixed-speed AC of the same tonnage.
Want bill-level accuracy?
This tool uses a flat ₹/unit estimate. For an exact bill matching your DISCOM's slab, FAC and duty, use the main calculator.
Open Bill Calculator