AC Electricity Cost Calculator
Find out how much your air conditioner adds to the electricity bill. Select the AC size and type, enter daily usage and your tariff, and see the estimated cost per hour, day, month and year.
- Set 24-26°C instead of 18-20°C. Every extra degree saves roughly 6-8% of cooling energy. 26°C with a ceiling fan feels as cool as 22°C without one.
- Seal the room and clean the filters monthly. Dirty filters and air gaps force the compressor to run longer. Clean filters can improve efficiency by up to 15%.
- Use a timer or sleep mode at night. Running the AC only when needed, and letting sleep mode raise the temperature slightly after a few hours, cuts night-time units sharply.
How to use
- Select your AC size in tons (0.75, 1, 1.5 or 2).
- Choose Inverter or Non-Inverter. Inverter ACs use about 35% less power on average.
- Enter how many hours per day the AC runs and your electricity tariff in Rs per kWh.
- Click Calculate Cost to see power draw, units and costs per hour, day, month and year, plus saving tips.
How the estimate is calculated
A non-inverter AC is estimated at about 1,150 watts per ton of cooling capacity, which is a typical value for common room ACs. An inverter AC is estimated to use about 35% less power, because its compressor slows down to hold room temperature instead of switching fully off and on. Daily units are power draw in kilowatts times daily hours, and cost is units times your tariff.
Related: TOU Tariff Calculator Pakistan · Inverter AC vs Normal AC Cost Comparison — compare purchase price and running cost side by side before you buy.
Related guides: AC Servicing Price Guide Pakistan.
Frequently Asked Questions (FAQ)
How is the AC power draw estimated?
The calculator uses an average draw of about 1,150 watts per ton for non-inverter ACs. An inverter AC is estimated to use about 35 percent less power because the compressor slows down instead of switching fully off and on.
What costs does this calculator show?
It shows estimated power draw in watts, hourly cost, daily cost, monthly cost (30 days) and yearly cost (365 days), all in Pakistani rupees.
Why does an inverter AC cost less to run?
An inverter AC adjusts compressor speed to hold the room temperature, so it avoids the high starting current and repeated full-power cycles of a non-inverter AC.
Is the result exact?
No, it is an estimate. Actual cost depends on room insulation, outside temperature, thermostat setting, AC age and service condition.
Is this calculator free?
Yes. It is free with no signup.